diff --git a/README.md b/README.md index 2477d0b04d..1c315f8869 100644 --- a/README.md +++ b/README.md @@ -14,7 +14,6 @@ Gin is a web framework written in Go (Golang). It features a martini-like API with performance that is up to 40 times faster thanks to [httprouter](https://github.com/julienschmidt/httprouter). If you need performance and good productivity, you will love Gin. - ## Contents - [Gin Web Framework](#gin-web-framework) @@ -23,7 +22,7 @@ Gin is a web framework written in Go (Golang). It features a martini-like API wi - [Quick start](#quick-start) - [Benchmarks](#benchmarks) - [Gin v1. stable](#gin-v1-stable) - - [Build with jsoniter/go-json](#build-with-json-replacement) + - [Build with json replacement](#build-with-json-replacement) - [Build without `MsgPack` rendering feature](#build-without-msgpack-rendering-feature) - [API Examples](#api-examples) - [Using GET, POST, PUT, PATCH, DELETE and OPTIONS](#using-get-post-put-patch-delete-and-options) @@ -38,6 +37,7 @@ Gin is a web framework written in Go (Golang). It features a martini-like API wi - [Grouping routes](#grouping-routes) - [Blank Gin without middleware by default](#blank-gin-without-middleware-by-default) - [Using middleware](#using-middleware) + - [Custom Recovery behavior](#custom-recovery-behavior) - [How to write log file](#how-to-write-log-file) - [Custom Log Format](#custom-log-format) - [Controlling Log output coloring](#controlling-log-output-coloring) @@ -75,6 +75,7 @@ Gin is a web framework written in Go (Golang). It features a martini-like API wi - [Build a single binary with templates](#build-a-single-binary-with-templates) - [Bind form-data request with custom struct](#bind-form-data-request-with-custom-struct) - [Try to bind body into different structs](#try-to-bind-body-into-different-structs) + - [Bind form-data request with custom struct and custom tag](#bind-form-data-request-with-custom-struct-and-custom-tag) - [http2 server push](#http2-server-push) - [Define format for the log of routes](#define-format-for-the-log-of-routes) - [Set and get a cookie](#set-and-get-a-cookie) @@ -89,7 +90,7 @@ To install Gin package, you need to install Go and set your Go workspace first. 1. You first need [Go](https://golang.org/) installed (**version 1.15+ is required**), then you can use the below Go command to install Gin. ```sh -$ go get -u github.com/gin-gonic/gin +go get -u github.com/gin-gonic/gin ``` 2. Import it in your code: @@ -115,19 +116,19 @@ $ cat example.go package main import ( - "net/http" + "net/http" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) func main() { - r := gin.Default() - r.GET("/ping", func(c *gin.Context) { - c.JSON(http.StatusOK, gin.H{ - "message": "pong", - }) - }) - r.Run() // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080") + r := gin.Default() + r.GET("/ping", func(c *gin.Context) { + c.JSON(http.StatusOK, gin.H{ + "message": "pong", + }) + }) + r.Run() // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080") } ``` @@ -193,12 +194,15 @@ Gin uses a custom version of [HttpRouter](https://github.com/julienschmidt/httpr Gin uses `encoding/json` as default json package but you can change it by build from other tags. [jsoniter](https://github.com/json-iterator/go) + ```sh -$ go build -tags=jsoniter . +go build -tags=jsoniter . ``` + [go-json](https://github.com/goccy/go-json) + ```sh -$ go build -tags=go_json . +go build -tags=go_json . ``` ## Build without `MsgPack` rendering feature @@ -206,7 +210,7 @@ $ go build -tags=go_json . Gin enables `MsgPack` rendering feature by default. But you can disable this feature by specifying `nomsgpack` build tag. ```sh -$ go build -tags=nomsgpack . +go build -tags=nomsgpack . ``` This is useful to reduce the binary size of executable files. See the [detail information](https://github.com/gin-gonic/gin/pull/1852). @@ -219,22 +223,22 @@ You can find a number of ready-to-run examples at [Gin examples repository](http ```go func main() { - // Creates a gin router with default middleware: - // logger and recovery (crash-free) middleware - router := gin.Default() + // Creates a gin router with default middleware: + // logger and recovery (crash-free) middleware + router := gin.Default() - router.GET("/someGet", getting) - router.POST("/somePost", posting) - router.PUT("/somePut", putting) - router.DELETE("/someDelete", deleting) - router.PATCH("/somePatch", patching) - router.HEAD("/someHead", head) - router.OPTIONS("/someOptions", options) + router.GET("/someGet", getting) + router.POST("/somePost", posting) + router.PUT("/somePut", putting) + router.DELETE("/someDelete", deleting) + router.PATCH("/somePatch", patching) + router.HEAD("/someHead", head) + router.OPTIONS("/someOptions", options) - // By default it serves on :8080 unless a - // PORT environment variable was defined. - router.Run() - // router.Run(":3000") for a hard coded port + // By default it serves on :8080 unless a + // PORT environment variable was defined. + router.Run() + // router.Run(":3000") for a hard coded port } ``` @@ -242,37 +246,37 @@ func main() { ```go func main() { - router := gin.Default() + router := gin.Default() - // This handler will match /user/john but will not match /user/ or /user - router.GET("/user/:name", func(c *gin.Context) { - name := c.Param("name") - c.String(http.StatusOK, "Hello %s", name) - }) + // This handler will match /user/john but will not match /user/ or /user + router.GET("/user/:name", func(c *gin.Context) { + name := c.Param("name") + c.String(http.StatusOK, "Hello %s", name) + }) - // However, this one will match /user/john/ and also /user/john/send - // If no other routers match /user/john, it will redirect to /user/john/ - router.GET("/user/:name/*action", func(c *gin.Context) { - name := c.Param("name") - action := c.Param("action") - message := name + " is " + action - c.String(http.StatusOK, message) - }) + // However, this one will match /user/john/ and also /user/john/send + // If no other routers match /user/john, it will redirect to /user/john/ + router.GET("/user/:name/*action", func(c *gin.Context) { + name := c.Param("name") + action := c.Param("action") + message := name + " is " + action + c.String(http.StatusOK, message) + }) - // For each matched request Context will hold the route definition - router.POST("/user/:name/*action", func(c *gin.Context) { - b := c.FullPath() == "/user/:name/*action" // true - c.String(http.StatusOK, "%t", b) - }) + // For each matched request Context will hold the route definition + router.POST("/user/:name/*action", func(c *gin.Context) { + b := c.FullPath() == "/user/:name/*action" // true + c.String(http.StatusOK, "%t", b) + }) - // This handler will add a new router for /user/groups. - // Exact routes are resolved before param routes, regardless of the order they were defined. - // Routes starting with /user/groups are never interpreted as /user/:name/... routes - router.GET("/user/groups", func(c *gin.Context) { - c.String(http.StatusOK, "The available groups are [...]") - }) + // This handler will add a new router for /user/groups. + // Exact routes are resolved before param routes, regardless of the order they were defined. + // Routes starting with /user/groups are never interpreted as /user/:name/... routes + router.GET("/user/groups", func(c *gin.Context) { + c.String(http.StatusOK, "The available groups are [...]") + }) - router.Run(":8080") + router.Run(":8080") } ``` @@ -280,17 +284,17 @@ func main() { ```go func main() { - router := gin.Default() + router := gin.Default() - // Query string parameters are parsed using the existing underlying request object. - // The request responds to a url matching: /welcome?firstname=Jane&lastname=Doe - router.GET("/welcome", func(c *gin.Context) { - firstname := c.DefaultQuery("firstname", "Guest") - lastname := c.Query("lastname") // shortcut for c.Request.URL.Query().Get("lastname") + // Query string parameters are parsed using the existing underlying request object. + // The request responds to a url matching: /welcome?firstname=Jane&lastname=Doe + router.GET("/welcome", func(c *gin.Context) { + firstname := c.DefaultQuery("firstname", "Guest") + lastname := c.Query("lastname") // shortcut for c.Request.URL.Query().Get("lastname") - c.String(http.StatusOK, "Hello %s %s", firstname, lastname) - }) - router.Run(":8080") + c.String(http.StatusOK, "Hello %s %s", firstname, lastname) + }) + router.Run(":8080") } ``` @@ -298,25 +302,25 @@ func main() { ```go func main() { - router := gin.Default() + router := gin.Default() - router.POST("/form_post", func(c *gin.Context) { - message := c.PostForm("message") - nick := c.DefaultPostForm("nick", "anonymous") + router.POST("/form_post", func(c *gin.Context) { + message := c.PostForm("message") + nick := c.DefaultPostForm("nick", "anonymous") - c.JSON(http.StatusOK, gin.H{ - "status": "posted", - "message": message, - "nick": nick, - }) - }) - router.Run(":8080") + c.JSON(http.StatusOK, gin.H{ + "status": "posted", + "message": message, + "nick": nick, + }) + }) + router.Run(":8080") } ``` ### Another example: query + post form -``` +```sh POST /post?id=1234&page=1 HTTP/1.1 Content-Type: application/x-www-form-urlencoded @@ -325,28 +329,28 @@ name=manu&message=this_is_great ```go func main() { - router := gin.Default() + router := gin.Default() - router.POST("/post", func(c *gin.Context) { + router.POST("/post", func(c *gin.Context) { - id := c.Query("id") - page := c.DefaultQuery("page", "0") - name := c.PostForm("name") - message := c.PostForm("message") + id := c.Query("id") + page := c.DefaultQuery("page", "0") + name := c.PostForm("name") + message := c.PostForm("message") - fmt.Printf("id: %s; page: %s; name: %s; message: %s", id, page, name, message) - }) - router.Run(":8080") + fmt.Printf("id: %s; page: %s; name: %s; message: %s", id, page, name, message) + }) + router.Run(":8080") } ``` -``` +```sh id: 1234; page: 1; name: manu; message: this_is_great ``` ### Map as querystring or postform parameters -``` +```sh POST /post?ids[a]=1234&ids[b]=hello HTTP/1.1 Content-Type: application/x-www-form-urlencoded @@ -355,20 +359,20 @@ names[first]=thinkerou&names[second]=tianou ```go func main() { - router := gin.Default() + router := gin.Default() - router.POST("/post", func(c *gin.Context) { + router.POST("/post", func(c *gin.Context) { - ids := c.QueryMap("ids") - names := c.PostFormMap("names") + ids := c.QueryMap("ids") + names := c.PostFormMap("names") - fmt.Printf("ids: %v; names: %v", ids, names) - }) - router.Run(":8080") + fmt.Printf("ids: %v; names: %v", ids, names) + }) + router.Run(":8080") } ``` -``` +```sh ids: map[b:hello a:1234]; names: map[second:tianou first:thinkerou] ``` @@ -384,20 +388,20 @@ References issue [#774](https://github.com/gin-gonic/gin/issues/774) and detail ```go func main() { - router := gin.Default() - // Set a lower memory limit for multipart forms (default is 32 MiB) - router.MaxMultipartMemory = 8 << 20 // 8 MiB - router.POST("/upload", func(c *gin.Context) { - // Single file - file, _ := c.FormFile("file") - log.Println(file.Filename) + router := gin.Default() + // Set a lower memory limit for multipart forms (default is 32 MiB) + router.MaxMultipartMemory = 8 << 20 // 8 MiB + router.POST("/upload", func(c *gin.Context) { + // Single file + file, _ := c.FormFile("file") + log.Println(file.Filename) - // Upload the file to specific dst. - c.SaveUploadedFile(file, dst) + // Upload the file to specific dst. + c.SaveUploadedFile(file, dst) - c.String(http.StatusOK, fmt.Sprintf("'%s' uploaded!", file.Filename)) - }) - router.Run(":8080") + c.String(http.StatusOK, fmt.Sprintf("'%s' uploaded!", file.Filename)) + }) + router.Run(":8080") } ``` @@ -415,23 +419,23 @@ See the detail [example code](https://github.com/gin-gonic/examples/tree/master/ ```go func main() { - router := gin.Default() - // Set a lower memory limit for multipart forms (default is 32 MiB) - router.MaxMultipartMemory = 8 << 20 // 8 MiB - router.POST("/upload", func(c *gin.Context) { - // Multipart form - form, _ := c.MultipartForm() - files := form.File["upload[]"] - - for _, file := range files { - log.Println(file.Filename) - - // Upload the file to specific dst. - c.SaveUploadedFile(file, dst) - } - c.String(http.StatusOK, fmt.Sprintf("%d files uploaded!", len(files))) - }) - router.Run(":8080") + router := gin.Default() + // Set a lower memory limit for multipart forms (default is 32 MiB) + router.MaxMultipartMemory = 8 << 20 // 8 MiB + router.POST("/upload", func(c *gin.Context) { + // Multipart form + form, _ := c.MultipartForm() + files := form.File["upload[]"] + + for _, file := range files { + log.Println(file.Filename) + + // Upload the file to specific dst. + c.SaveUploadedFile(file, dst) + } + c.String(http.StatusOK, fmt.Sprintf("%d files uploaded!", len(files))) + }) + router.Run(":8080") } ``` @@ -448,25 +452,25 @@ curl -X POST http://localhost:8080/upload \ ```go func main() { - router := gin.Default() - - // Simple group: v1 - v1 := router.Group("/v1") - { - v1.POST("/login", loginEndpoint) - v1.POST("/submit", submitEndpoint) - v1.POST("/read", readEndpoint) - } + router := gin.Default() + + // Simple group: v1 + v1 := router.Group("/v1") + { + v1.POST("/login", loginEndpoint) + v1.POST("/submit", submitEndpoint) + v1.POST("/read", readEndpoint) + } - // Simple group: v2 - v2 := router.Group("/v2") - { - v2.POST("/login", loginEndpoint) - v2.POST("/submit", submitEndpoint) - v2.POST("/read", readEndpoint) - } + // Simple group: v2 + v2 := router.Group("/v2") + { + v2.POST("/login", loginEndpoint) + v2.POST("/submit", submitEndpoint) + v2.POST("/read", readEndpoint) + } - router.Run(":8080") + router.Run(":8080") } ``` @@ -485,81 +489,83 @@ instead of r := gin.Default() ``` - ### Using middleware + ```go func main() { - // Creates a router without any middleware by default - r := gin.New() - - // Global middleware - // Logger middleware will write the logs to gin.DefaultWriter even if you set with GIN_MODE=release. - // By default gin.DefaultWriter = os.Stdout - r.Use(gin.Logger()) - - // Recovery middleware recovers from any panics and writes a 500 if there was one. - r.Use(gin.Recovery()) - - // Per route middleware, you can add as many as you desire. - r.GET("/benchmark", MyBenchLogger(), benchEndpoint) - - // Authorization group - // authorized := r.Group("/", AuthRequired()) - // exactly the same as: - authorized := r.Group("/") - // per group middleware! in this case we use the custom created - // AuthRequired() middleware just in the "authorized" group. - authorized.Use(AuthRequired()) - { - authorized.POST("/login", loginEndpoint) - authorized.POST("/submit", submitEndpoint) - authorized.POST("/read", readEndpoint) - - // nested group - testing := authorized.Group("testing") - // visit 0.0.0.0:8080/testing/analytics - testing.GET("/analytics", analyticsEndpoint) - } + // Creates a router without any middleware by default + r := gin.New() + + // Global middleware + // Logger middleware will write the logs to gin.DefaultWriter even if you set with GIN_MODE=release. + // By default gin.DefaultWriter = os.Stdout + r.Use(gin.Logger()) + + // Recovery middleware recovers from any panics and writes a 500 if there was one. + r.Use(gin.Recovery()) + + // Per route middleware, you can add as many as you desire. + r.GET("/benchmark", MyBenchLogger(), benchEndpoint) + + // Authorization group + // authorized := r.Group("/", AuthRequired()) + // exactly the same as: + authorized := r.Group("/") + // per group middleware! in this case we use the custom created + // AuthRequired() middleware just in the "authorized" group. + authorized.Use(AuthRequired()) + { + authorized.POST("/login", loginEndpoint) + authorized.POST("/submit", submitEndpoint) + authorized.POST("/read", readEndpoint) + + // nested group + testing := authorized.Group("testing") + // visit 0.0.0.0:8080/testing/analytics + testing.GET("/analytics", analyticsEndpoint) + } - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` ### Custom Recovery behavior + ```go func main() { - // Creates a router without any middleware by default - r := gin.New() - - // Global middleware - // Logger middleware will write the logs to gin.DefaultWriter even if you set with GIN_MODE=release. - // By default gin.DefaultWriter = os.Stdout - r.Use(gin.Logger()) - - // Recovery middleware recovers from any panics and writes a 500 if there was one. - r.Use(gin.CustomRecovery(func(c *gin.Context, recovered interface{}) { - if err, ok := recovered.(string); ok { - c.String(http.StatusInternalServerError, fmt.Sprintf("error: %s", err)) - } - c.AbortWithStatus(http.StatusInternalServerError) - })) + // Creates a router without any middleware by default + r := gin.New() + + // Global middleware + // Logger middleware will write the logs to gin.DefaultWriter even if you set with GIN_MODE=release. + // By default gin.DefaultWriter = os.Stdout + r.Use(gin.Logger()) + + // Recovery middleware recovers from any panics and writes a 500 if there was one. + r.Use(gin.CustomRecovery(func(c *gin.Context, recovered interface{}) { + if err, ok := recovered.(string); ok { + c.String(http.StatusInternalServerError, fmt.Sprintf("error: %s", err)) + } + c.AbortWithStatus(http.StatusInternalServerError) + })) - r.GET("/panic", func(c *gin.Context) { - // panic with a string -- the custom middleware could save this to a database or report it to the user - panic("foo") - }) + r.GET("/panic", func(c *gin.Context) { + // panic with a string -- the custom middleware could save this to a database or report it to the user + panic("foo") + }) - r.GET("/", func(c *gin.Context) { - c.String(http.StatusOK, "ohai") - }) + r.GET("/", func(c *gin.Context) { + c.String(http.StatusOK, "ohai") + }) - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` ### How to write log file + ```go func main() { // Disable Console Color, you don't need console color when writing the logs to file. @@ -582,39 +588,41 @@ func main() { ``` ### Custom Log Format + ```go func main() { - router := gin.New() + router := gin.New() - // LoggerWithFormatter middleware will write the logs to gin.DefaultWriter - // By default gin.DefaultWriter = os.Stdout - router.Use(gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string { + // LoggerWithFormatter middleware will write the logs to gin.DefaultWriter + // By default gin.DefaultWriter = os.Stdout + router.Use(gin.LoggerWithFormatter(func(param gin.LogFormatterParams) string { - // your custom format - return fmt.Sprintf("%s - [%s] \"%s %s %s %d %s \"%s\" %s\"\n", - param.ClientIP, - param.TimeStamp.Format(time.RFC1123), - param.Method, - param.Path, - param.Request.Proto, - param.StatusCode, - param.Latency, - param.Request.UserAgent(), - param.ErrorMessage, - ) - })) - router.Use(gin.Recovery()) + // your custom format + return fmt.Sprintf("%s - [%s] \"%s %s %s %d %s \"%s\" %s\"\n", + param.ClientIP, + param.TimeStamp.Format(time.RFC1123), + param.Method, + param.Path, + param.Request.Proto, + param.StatusCode, + param.Latency, + param.Request.UserAgent(), + param.ErrorMessage, + ) + })) + router.Use(gin.Recovery()) - router.GET("/ping", func(c *gin.Context) { - c.String(http.StatusOK, "pong") - }) + router.GET("/ping", func(c *gin.Context) { + c.String(http.StatusOK, "pong") + }) - router.Run(":8080") + router.Run(":8080") } ``` -**Sample Output** -``` +Sample Output + +```sh ::1 - [Fri, 07 Dec 2018 17:04:38 JST] "GET /ping HTTP/1.1 200 122.767µs "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.80 Safari/537.36" " ``` @@ -669,6 +677,7 @@ Gin uses [**go-playground/validator/v10**](https://github.com/go-playground/vali Note that you need to set the corresponding binding tag on all fields you want to bind. For example, when binding from JSON, set `json:"fieldname"`. Also, Gin provides two sets of methods for binding: + - **Type** - Must bind - **Methods** - `Bind`, `BindJSON`, `BindXML`, `BindQuery`, `BindYAML`, `BindHeader`, `BindTOML` - **Behavior** - These methods use `MustBindWith` under the hood. If there is a binding error, the request is aborted with `c.AbortWithError(400, err).SetType(ErrorTypeBind)`. This sets the response status code to 400 and the `Content-Type` header is set to `text/plain; charset=utf-8`. Note that if you try to set the response code after this, it will result in a warning `[GIN-debug] [WARNING] Headers were already written. Wanted to override status code 400 with 422`. If you wish to have greater control over the behavior, consider using the `ShouldBind` equivalent method. @@ -683,74 +692,75 @@ You can also specify that specific fields are required. If a field is decorated ```go // Binding from JSON type Login struct { - User string `form:"user" json:"user" xml:"user" binding:"required"` - Password string `form:"password" json:"password" xml:"password" binding:"required"` + User string `form:"user" json:"user" xml:"user" binding:"required"` + Password string `form:"password" json:"password" xml:"password" binding:"required"` } func main() { - router := gin.Default() - - // Example for binding JSON ({"user": "manu", "password": "123"}) - router.POST("/loginJSON", func(c *gin.Context) { - var json Login - if err := c.ShouldBindJSON(&json); err != nil { - c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) - return - } - - if json.User != "manu" || json.Password != "123" { - c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"}) - return - } - - c.JSON(http.StatusOK, gin.H{"status": "you are logged in"}) - }) - - // Example for binding XML ( - // - // - // manu - // 123 - // ) - router.POST("/loginXML", func(c *gin.Context) { - var xml Login - if err := c.ShouldBindXML(&xml); err != nil { - c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) - return - } - - if xml.User != "manu" || xml.Password != "123" { - c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"}) - return - } - - c.JSON(http.StatusOK, gin.H{"status": "you are logged in"}) - }) - - // Example for binding a HTML form (user=manu&password=123) - router.POST("/loginForm", func(c *gin.Context) { - var form Login - // This will infer what binder to use depending on the content-type header. - if err := c.ShouldBind(&form); err != nil { - c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) - return - } - - if form.User != "manu" || form.Password != "123" { - c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"}) - return - } - - c.JSON(http.StatusOK, gin.H{"status": "you are logged in"}) - }) - - // Listen and serve on 0.0.0.0:8080 - router.Run(":8080") -} -``` - -**Sample request** -```shell + router := gin.Default() + + // Example for binding JSON ({"user": "manu", "password": "123"}) + router.POST("/loginJSON", func(c *gin.Context) { + var json Login + if err := c.ShouldBindJSON(&json); err != nil { + c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) + return + } + + if json.User != "manu" || json.Password != "123" { + c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"}) + return + } + + c.JSON(http.StatusOK, gin.H{"status": "you are logged in"}) + }) + + // Example for binding XML ( + // + // + // manu + // 123 + // ) + router.POST("/loginXML", func(c *gin.Context) { + var xml Login + if err := c.ShouldBindXML(&xml); err != nil { + c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) + return + } + + if xml.User != "manu" || xml.Password != "123" { + c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"}) + return + } + + c.JSON(http.StatusOK, gin.H{"status": "you are logged in"}) + }) + + // Example for binding a HTML form (user=manu&password=123) + router.POST("/loginForm", func(c *gin.Context) { + var form Login + // This will infer what binder to use depending on the content-type header. + if err := c.ShouldBind(&form); err != nil { + c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) + return + } + + if form.User != "manu" || form.Password != "123" { + c.JSON(http.StatusUnauthorized, gin.H{"status": "unauthorized"}) + return + } + + c.JSON(http.StatusOK, gin.H{"status": "you are logged in"}) + }) + + // Listen and serve on 0.0.0.0:8080 + router.Run(":8080") +} +``` + +Sample request + +```sh $ curl -v -X POST \ http://localhost:8080/loginJSON \ -H 'content-type: application/json' \ @@ -771,9 +781,7 @@ $ curl -v -X POST \ {"error":"Key: 'Login.Password' Error:Field validation for 'Password' failed on the 'required' tag"} ``` -**Skip validate** - -When running the above example using the above the `curl` command, it returns error. Because the example use `binding:"required"` for `Password`. If use `binding:"-"` for `Password`, then it will not return error when running the above example again. +Skip validate: when running the above example using the above the `curl` command, it returns error. Because the example use `binding:"required"` for `Password`. If use `binding:"-"` for `Password`, then it will not return error when running the above example again. ### Custom Validators @@ -783,49 +791,49 @@ It is also possible to register custom validators. See the [example code](https: package main import ( - "net/http" - "time" + "net/http" + "time" - "github.com/gin-gonic/gin" - "github.com/gin-gonic/gin/binding" - "github.com/go-playground/validator/v10" + "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin/binding" + "github.com/go-playground/validator/v10" ) // Booking contains binded and validated data. type Booking struct { - CheckIn time.Time `form:"check_in" binding:"required,bookabledate" time_format:"2006-01-02"` - CheckOut time.Time `form:"check_out" binding:"required,gtfield=CheckIn" time_format:"2006-01-02"` + CheckIn time.Time `form:"check_in" binding:"required,bookabledate" time_format:"2006-01-02"` + CheckOut time.Time `form:"check_out" binding:"required,gtfield=CheckIn" time_format:"2006-01-02"` } var bookableDate validator.Func = func(fl validator.FieldLevel) bool { - date, ok := fl.Field().Interface().(time.Time) - if ok { - today := time.Now() - if today.After(date) { - return false - } - } - return true + date, ok := fl.Field().Interface().(time.Time) + if ok { + today := time.Now() + if today.After(date) { + return false + } + } + return true } func main() { - route := gin.Default() + route := gin.Default() - if v, ok := binding.Validator.Engine().(*validator.Validate); ok { - v.RegisterValidation("bookabledate", bookableDate) - } + if v, ok := binding.Validator.Engine().(*validator.Validate); ok { + v.RegisterValidation("bookabledate", bookableDate) + } - route.GET("/bookable", getBookable) - route.Run(":8085") + route.GET("/bookable", getBookable) + route.Run(":8085") } func getBookable(c *gin.Context) { - var b Booking - if err := c.ShouldBindWith(&b, binding.Query); err == nil { - c.JSON(http.StatusOK, gin.H{"message": "Booking dates are valid!"}) - } else { - c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) - } + var b Booking + if err := c.ShouldBindWith(&b, binding.Query); err == nil { + c.JSON(http.StatusOK, gin.H{"message": "Booking dates are valid!"}) + } else { + c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) + } } ``` @@ -851,31 +859,31 @@ See the [struct-lvl-validation example](https://github.com/gin-gonic/examples/tr package main import ( - "log" - "net/http" + "log" + "net/http" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) type Person struct { - Name string `form:"name"` - Address string `form:"address"` + Name string `form:"name"` + Address string `form:"address"` } func main() { - route := gin.Default() - route.Any("/testing", startPage) - route.Run(":8085") + route := gin.Default() + route.Any("/testing", startPage) + route.Run(":8085") } func startPage(c *gin.Context) { - var person Person - if c.ShouldBindQuery(&person) == nil { - log.Println("====== Only Bind By Query String ======") - log.Println(person.Name) - log.Println(person.Address) - } - c.String(http.StatusOK, "Success") + var person Person + if c.ShouldBindQuery(&person) == nil { + log.Println("====== Only Bind By Query String ======") + log.Println(person.Name) + log.Println(person.Address) + } + c.String(http.StatusOK, "Success") } ``` @@ -888,11 +896,11 @@ See the [detail information](https://github.com/gin-gonic/gin/issues/742#issueco package main import ( - "log" - "net/http" - "time" + "log" + "net/http" + "time" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) type Person struct { @@ -904,16 +912,16 @@ type Person struct { } func main() { - route := gin.Default() - route.GET("/testing", startPage) - route.Run(":8085") + route := gin.Default() + route.GET("/testing", startPage) + route.Run(":8085") } func startPage(c *gin.Context) { - var person Person - // If `GET`, only `Form` binding engine (`query`) used. - // If `POST`, first checks the `content-type` for `JSON` or `XML`, then uses `Form` (`form-data`). - // See more at https://github.com/gin-gonic/gin/blob/master/binding/binding.go#L88 + var person Person + // If `GET`, only `Form` binding engine (`query`) used. + // If `POST`, first checks the `content-type` for `JSON` or `XML`, then uses `Form` (`form-data`). + // See more at https://github.com/gin-gonic/gin/blob/master/binding/binding.go#L88 if c.ShouldBind(&person) == nil { log.Println(person.Name) log.Println(person.Address) @@ -922,13 +930,14 @@ func startPage(c *gin.Context) { log.Println(person.UnixTime) } - c.String(http.StatusOK, "Success") + c.String(http.StatusOK, "Success") } ``` Test it with: + ```sh -$ curl -X GET "localhost:8085/testing?name=appleboy&address=xyz&birthday=1992-03-15&createTime=1562400033000000123&unixTime=1562400033" +curl -X GET "localhost:8085/testing?name=appleboy&address=xyz&birthday=1992-03-15&createTime=1562400033000000123&unixTime=1562400033" ``` ### Bind Uri @@ -939,34 +948,35 @@ See the [detail information](https://github.com/gin-gonic/gin/issues/846). package main import ( - "net/http" + "net/http" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) type Person struct { - ID string `uri:"id" binding:"required,uuid"` - Name string `uri:"name" binding:"required"` + ID string `uri:"id" binding:"required,uuid"` + Name string `uri:"name" binding:"required"` } func main() { - route := gin.Default() - route.GET("/:name/:id", func(c *gin.Context) { - var person Person - if err := c.ShouldBindUri(&person); err != nil { - c.JSON(http.StatusBadRequest, gin.H{"msg": err.Error()}) - return - } - c.JSON(http.StatusOK, gin.H{"name": person.Name, "uuid": person.ID}) - }) - route.Run(":8088") + route := gin.Default() + route.GET("/:name/:id", func(c *gin.Context) { + var person Person + if err := c.ShouldBindUri(&person); err != nil { + c.JSON(http.StatusBadRequest, gin.H{"msg": err.Error()}) + return + } + c.JSON(http.StatusOK, gin.H{"name": person.Name, "uuid": person.ID}) + }) + route.Run(":8088") } ``` Test it with: + ```sh -$ curl -v localhost:8088/thinkerou/987fbc97-4bed-5078-9f07-9141ba07c9f3 -$ curl -v localhost:8088/thinkerou/not-uuid +curl -v localhost:8088/thinkerou/987fbc97-4bed-5078-9f07-9141ba07c9f3 +curl -v localhost:8088/thinkerou/not-uuid ``` ### Bind Header @@ -975,31 +985,31 @@ $ curl -v localhost:8088/thinkerou/not-uuid package main import ( - "fmt" - "net/http" + "fmt" + "net/http" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) type testHeader struct { - Rate int `header:"Rate"` - Domain string `header:"Domain"` + Rate int `header:"Rate"` + Domain string `header:"Domain"` } func main() { - r := gin.Default() - r.GET("/", func(c *gin.Context) { - h := testHeader{} + r := gin.Default() + r.GET("/", func(c *gin.Context) { + h := testHeader{} - if err := c.ShouldBindHeader(&h); err != nil { - c.JSON(http.StatusOK, err) - } + if err := c.ShouldBindHeader(&h); err != nil { + c.JSON(http.StatusOK, err) + } - fmt.Printf("%#v\n", h) - c.JSON(http.StatusOK, gin.H{"Rate": h.Rate, "Domain": h.Domain}) - }) + fmt.Printf("%#v\n", h) + c.JSON(http.StatusOK, gin.H{"Rate": h.Rate, "Domain": h.Domain}) + }) - r.Run() + r.Run() // client // curl -H "rate:300" -H "domain:music" 127.0.0.1:8080/ @@ -1050,7 +1060,7 @@ form.html result: -``` +```json {"color":["red","green","blue"]} ``` @@ -1058,94 +1068,95 @@ result: ```go type ProfileForm struct { - Name string `form:"name" binding:"required"` - Avatar *multipart.FileHeader `form:"avatar" binding:"required"` + Name string `form:"name" binding:"required"` + Avatar *multipart.FileHeader `form:"avatar" binding:"required"` - // or for multiple files - // Avatars []*multipart.FileHeader `form:"avatar" binding:"required"` + // or for multiple files + // Avatars []*multipart.FileHeader `form:"avatar" binding:"required"` } func main() { - router := gin.Default() - router.POST("/profile", func(c *gin.Context) { - // you can bind multipart form with explicit binding declaration: - // c.ShouldBindWith(&form, binding.Form) - // or you can simply use autobinding with ShouldBind method: - var form ProfileForm - // in this case proper binding will be automatically selected - if err := c.ShouldBind(&form); err != nil { - c.String(http.StatusBadRequest, "bad request") - return - } + router := gin.Default() + router.POST("/profile", func(c *gin.Context) { + // you can bind multipart form with explicit binding declaration: + // c.ShouldBindWith(&form, binding.Form) + // or you can simply use autobinding with ShouldBind method: + var form ProfileForm + // in this case proper binding will be automatically selected + if err := c.ShouldBind(&form); err != nil { + c.String(http.StatusBadRequest, "bad request") + return + } - err := c.SaveUploadedFile(form.Avatar, form.Avatar.Filename) - if err != nil { - c.String(http.StatusInternalServerError, "unknown error") - return - } + err := c.SaveUploadedFile(form.Avatar, form.Avatar.Filename) + if err != nil { + c.String(http.StatusInternalServerError, "unknown error") + return + } - // db.Save(&form) + // db.Save(&form) - c.String(http.StatusOK, "ok") - }) - router.Run(":8080") + c.String(http.StatusOK, "ok") + }) + router.Run(":8080") } ``` Test it with: + ```sh -$ curl -X POST -v --form name=user --form "avatar=@./avatar.png" http://localhost:8080/profile +curl -X POST -v --form name=user --form "avatar=@./avatar.png" http://localhost:8080/profile ``` ### XML, JSON, YAML and ProtoBuf rendering ```go func main() { - r := gin.Default() - - // gin.H is a shortcut for map[string]interface{} - r.GET("/someJSON", func(c *gin.Context) { - c.JSON(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK}) - }) - - r.GET("/moreJSON", func(c *gin.Context) { - // You also can use a struct - var msg struct { - Name string `json:"user"` - Message string - Number int - } - msg.Name = "Lena" - msg.Message = "hey" - msg.Number = 123 - // Note that msg.Name becomes "user" in the JSON - // Will output : {"user": "Lena", "Message": "hey", "Number": 123} - c.JSON(http.StatusOK, msg) - }) - - r.GET("/someXML", func(c *gin.Context) { - c.XML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK}) - }) - - r.GET("/someYAML", func(c *gin.Context) { - c.YAML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK}) - }) - - r.GET("/someProtoBuf", func(c *gin.Context) { - reps := []int64{int64(1), int64(2)} - label := "test" - // The specific definition of protobuf is written in the testdata/protoexample file. - data := &protoexample.Test{ - Label: &label, - Reps: reps, - } - // Note that data becomes binary data in the response - // Will output protoexample.Test protobuf serialized data - c.ProtoBuf(http.StatusOK, data) - }) - - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + r := gin.Default() + + // gin.H is a shortcut for map[string]interface{} + r.GET("/someJSON", func(c *gin.Context) { + c.JSON(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK}) + }) + + r.GET("/moreJSON", func(c *gin.Context) { + // You also can use a struct + var msg struct { + Name string `json:"user"` + Message string + Number int + } + msg.Name = "Lena" + msg.Message = "hey" + msg.Number = 123 + // Note that msg.Name becomes "user" in the JSON + // Will output : {"user": "Lena", "Message": "hey", "Number": 123} + c.JSON(http.StatusOK, msg) + }) + + r.GET("/someXML", func(c *gin.Context) { + c.XML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK}) + }) + + r.GET("/someYAML", func(c *gin.Context) { + c.YAML(http.StatusOK, gin.H{"message": "hey", "status": http.StatusOK}) + }) + + r.GET("/someProtoBuf", func(c *gin.Context) { + reps := []int64{int64(1), int64(2)} + label := "test" + // The specific definition of protobuf is written in the testdata/protoexample file. + data := &protoexample.Test{ + Label: &label, + Reps: reps, + } + // Note that data becomes binary data in the response + // Will output protoexample.Test protobuf serialized data + c.ProtoBuf(http.StatusOK, data) + }) + + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` @@ -1155,42 +1166,43 @@ Using SecureJSON to prevent json hijacking. Default prepends `"while(1),"` to re ```go func main() { - r := gin.Default() + r := gin.Default() - // You can also use your own secure json prefix - // r.SecureJsonPrefix(")]}',\n") + // You can also use your own secure json prefix + // r.SecureJsonPrefix(")]}',\n") - r.GET("/someJSON", func(c *gin.Context) { - names := []string{"lena", "austin", "foo"} + r.GET("/someJSON", func(c *gin.Context) { + names := []string{"lena", "austin", "foo"} - // Will output : while(1);["lena","austin","foo"] - c.SecureJSON(http.StatusOK, names) - }) + // Will output : while(1);["lena","austin","foo"] + c.SecureJSON(http.StatusOK, names) + }) - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` + #### JSONP Using JSONP to request data from a server in a different domain. Add callback to response body if the query parameter callback exists. ```go func main() { - r := gin.Default() + r := gin.Default() - r.GET("/JSONP", func(c *gin.Context) { - data := gin.H{ - "foo": "bar", - } + r.GET("/JSONP", func(c *gin.Context) { + data := gin.H{ + "foo": "bar", + } - //callback is x - // Will output : x({\"foo\":\"bar\"}) - c.JSONP(http.StatusOK, data) - }) + //callback is x + // Will output : x({\"foo\":\"bar\"}) + c.JSONP(http.StatusOK, data) + }) - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") // client // curl http://127.0.0.1:8080/JSONP?callback=x @@ -1203,20 +1215,20 @@ Using AsciiJSON to Generates ASCII-only JSON with escaped non-ASCII characters. ```go func main() { - r := gin.Default() + r := gin.Default() - r.GET("/someJSON", func(c *gin.Context) { - data := gin.H{ - "lang": "GO语言", - "tag": "
", - } + r.GET("/someJSON", func(c *gin.Context) { + data := gin.H{ + "lang": "GO语言", + "tag": "
", + } - // will output : {"lang":"GO\u8bed\u8a00","tag":"\u003cbr\u003e"} - c.AsciiJSON(http.StatusOK, data) - }) + // will output : {"lang":"GO\u8bed\u8a00","tag":"\u003cbr\u003e"} + c.AsciiJSON(http.StatusOK, data) + }) - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` @@ -1227,24 +1239,24 @@ This feature is unavailable in Go 1.6 and lower. ```go func main() { - r := gin.Default() + r := gin.Default() - // Serves unicode entities - r.GET("/json", func(c *gin.Context) { - c.JSON(http.StatusOK, gin.H{ - "html": "Hello, world!", - }) - }) + // Serves unicode entities + r.GET("/json", func(c *gin.Context) { + c.JSON(http.StatusOK, gin.H{ + "html": "Hello, world!", + }) + }) - // Serves literal characters - r.GET("/purejson", func(c *gin.Context) { - c.PureJSON(http.StatusOK, gin.H{ - "html": "Hello, world!", - }) - }) + // Serves literal characters + r.GET("/purejson", func(c *gin.Context) { + c.PureJSON(http.StatusOK, gin.H{ + "html": "Hello, world!", + }) + }) - // listen and serve on 0.0.0.0:8080 - r.Run(":8080") + // listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` @@ -1252,14 +1264,14 @@ func main() { ```go func main() { - router := gin.Default() - router.Static("/assets", "./assets") - router.StaticFS("/more_static", http.Dir("my_file_system")) - router.StaticFile("/favicon.ico", "./resources/favicon.ico") - router.StaticFileFS("/more_favicon.ico", "more_favicon.ico", http.Dir("my_file_system")) - - // Listen and serve on 0.0.0.0:8080 - router.Run(":8080") + router := gin.Default() + router.Static("/assets", "./assets") + router.StaticFS("/more_static", http.Dir("my_file_system")) + router.StaticFile("/favicon.ico", "./resources/favicon.ico") + router.StaticFileFS("/more_favicon.ico", "more_favicon.ico", http.Dir("my_file_system")) + + // Listen and serve on 0.0.0.0:8080 + router.Run(":8080") } ``` @@ -1267,16 +1279,16 @@ func main() { ```go func main() { - router := gin.Default() + router := gin.Default() - router.GET("/local/file", func(c *gin.Context) { - c.File("local/file.go") - }) + router.GET("/local/file", func(c *gin.Context) { + c.File("local/file.go") + }) - var fs http.FileSystem = // ... - router.GET("/fs/file", func(c *gin.Context) { - c.FileFromFS("fs/file.go", fs) - }) + var fs http.FileSystem = // ... + router.GET("/fs/file", func(c *gin.Context) { + c.FileFromFS("fs/file.go", fs) + }) } ``` @@ -1285,26 +1297,26 @@ func main() { ```go func main() { - router := gin.Default() - router.GET("/someDataFromReader", func(c *gin.Context) { - response, err := http.Get("https://raw.githubusercontent.com/gin-gonic/logo/master/color.png") - if err != nil || response.StatusCode != http.StatusOK { - c.Status(http.StatusServiceUnavailable) - return - } + router := gin.Default() + router.GET("/someDataFromReader", func(c *gin.Context) { + response, err := http.Get("https://raw.githubusercontent.com/gin-gonic/logo/master/color.png") + if err != nil || response.StatusCode != http.StatusOK { + c.Status(http.StatusServiceUnavailable) + return + } - reader := response.Body - defer reader.Close() - contentLength := response.ContentLength - contentType := response.Header.Get("Content-Type") + reader := response.Body + defer reader.Close() + contentLength := response.ContentLength + contentType := response.Header.Get("Content-Type") - extraHeaders := map[string]string{ - "Content-Disposition": `attachment; filename="gopher.png"`, - } + extraHeaders := map[string]string{ + "Content-Disposition": `attachment; filename="gopher.png"`, + } - c.DataFromReader(http.StatusOK, contentLength, contentType, reader, extraHeaders) - }) - router.Run(":8080") + c.DataFromReader(http.StatusOK, contentLength, contentType, reader, extraHeaders) + }) + router.Run(":8080") } ``` @@ -1314,15 +1326,15 @@ Using LoadHTMLGlob() or LoadHTMLFiles() ```go func main() { - router := gin.Default() - router.LoadHTMLGlob("templates/*") - //router.LoadHTMLFiles("templates/template1.html", "templates/template2.html") - router.GET("/index", func(c *gin.Context) { - c.HTML(http.StatusOK, "index.tmpl", gin.H{ - "title": "Main website", - }) - }) - router.Run(":8080") + router := gin.Default() + router.LoadHTMLGlob("templates/*") + //router.LoadHTMLFiles("templates/template1.html", "templates/template2.html") + router.GET("/index", func(c *gin.Context) { + c.HTML(http.StatusOK, "index.tmpl", gin.H{ + "title": "Main website", + }) + }) + router.Run(":8080") } ``` @@ -1330,9 +1342,9 @@ templates/index.tmpl ```html -

- {{ .title }} -

+

+ {{ .title }} +

``` @@ -1340,19 +1352,19 @@ Using templates with same name in different directories ```go func main() { - router := gin.Default() - router.LoadHTMLGlob("templates/**/*") - router.GET("/posts/index", func(c *gin.Context) { - c.HTML(http.StatusOK, "posts/index.tmpl", gin.H{ - "title": "Posts", - }) - }) - router.GET("/users/index", func(c *gin.Context) { - c.HTML(http.StatusOK, "users/index.tmpl", gin.H{ - "title": "Users", - }) - }) - router.Run(":8080") + router := gin.Default() + router.LoadHTMLGlob("templates/**/*") + router.GET("/posts/index", func(c *gin.Context) { + c.HTML(http.StatusOK, "posts/index.tmpl", gin.H{ + "title": "Posts", + }) + }) + router.GET("/users/index", func(c *gin.Context) { + c.HTML(http.StatusOK, "users/index.tmpl", gin.H{ + "title": "Users", + }) + }) + router.Run(":8080") } ``` @@ -1361,7 +1373,7 @@ templates/posts/index.tmpl ```html {{ define "posts/index.tmpl" }}

- {{ .title }} + {{ .title }}

Using posts/index.tmpl

@@ -1373,7 +1385,7 @@ templates/users/index.tmpl ```html {{ define "users/index.tmpl" }}

- {{ .title }} + {{ .title }}

Using users/index.tmpl

@@ -1388,10 +1400,10 @@ You can also use your own html template render import "html/template" func main() { - router := gin.Default() - html := template.Must(template.ParseFiles("file1", "file2")) - router.SetHTMLTemplate(html) - router.Run(":8080") + router := gin.Default() + html := template.Must(template.ParseFiles("file1", "file2")) + router.SetHTMLTemplate(html) + router.Run(":8080") } ``` @@ -1400,9 +1412,9 @@ func main() { You may use custom delims ```go - r := gin.Default() - r.Delims("{[{", "}]}") - r.LoadHTMLGlob("/path/to/templates") + r := gin.Default() + r.Delims("{[{", "}]}") + r.LoadHTMLGlob("/path/to/templates") ``` #### Custom Template Funcs @@ -1452,7 +1464,8 @@ Date: {[{.now | formatAsDate}]} ``` Result: -``` + +```sh Date: 2017/07/01 ``` @@ -1466,14 +1479,15 @@ Issuing a HTTP redirect is easy. Both internal and external locations are suppor ```go r.GET("/test", func(c *gin.Context) { - c.Redirect(http.StatusMovedPermanently, "http://www.google.com/") + c.Redirect(http.StatusMovedPermanently, "http://www.google.com/") }) ``` Issuing a HTTP redirect from POST. Refer to issue: [#444](https://github.com/gin-gonic/gin/issues/444) + ```go r.POST("/test", func(c *gin.Context) { - c.Redirect(http.StatusFound, "/foo") + c.Redirect(http.StatusFound, "/foo") }) ``` @@ -1489,44 +1503,43 @@ r.GET("/test2", func(c *gin.Context) { }) ``` - ### Custom Middleware ```go func Logger() gin.HandlerFunc { - return func(c *gin.Context) { - t := time.Now() + return func(c *gin.Context) { + t := time.Now() - // Set example variable - c.Set("example", "12345") + // Set example variable + c.Set("example", "12345") - // before request + // before request - c.Next() + c.Next() - // after request - latency := time.Since(t) - log.Print(latency) + // after request + latency := time.Since(t) + log.Print(latency) - // access the status we are sending - status := c.Writer.Status() - log.Println(status) - } + // access the status we are sending + status := c.Writer.Status() + log.Println(status) + } } func main() { - r := gin.New() - r.Use(Logger()) + r := gin.New() + r.Use(Logger()) - r.GET("/test", func(c *gin.Context) { - example := c.MustGet("example").(string) + r.GET("/test", func(c *gin.Context) { + example := c.MustGet("example").(string) - // it would print: "12345" - log.Println(example) - }) + // it would print: "12345" + log.Println(example) + }) - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` @@ -1535,37 +1548,37 @@ func main() { ```go // simulate some private data var secrets = gin.H{ - "foo": gin.H{"email": "foo@bar.com", "phone": "123433"}, - "austin": gin.H{"email": "austin@example.com", "phone": "666"}, - "lena": gin.H{"email": "lena@guapa.com", "phone": "523443"}, + "foo": gin.H{"email": "foo@bar.com", "phone": "123433"}, + "austin": gin.H{"email": "austin@example.com", "phone": "666"}, + "lena": gin.H{"email": "lena@guapa.com", "phone": "523443"}, } func main() { - r := gin.Default() - - // Group using gin.BasicAuth() middleware - // gin.Accounts is a shortcut for map[string]string - authorized := r.Group("/admin", gin.BasicAuth(gin.Accounts{ - "foo": "bar", - "austin": "1234", - "lena": "hello2", - "manu": "4321", - })) - - // /admin/secrets endpoint - // hit "localhost:8080/admin/secrets - authorized.GET("/secrets", func(c *gin.Context) { - // get user, it was set by the BasicAuth middleware - user := c.MustGet(gin.AuthUserKey).(string) - if secret, ok := secrets[user]; ok { - c.JSON(http.StatusOK, gin.H{"user": user, "secret": secret}) - } else { - c.JSON(http.StatusOK, gin.H{"user": user, "secret": "NO SECRET :("}) - } - }) - - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + r := gin.Default() + + // Group using gin.BasicAuth() middleware + // gin.Accounts is a shortcut for map[string]string + authorized := r.Group("/admin", gin.BasicAuth(gin.Accounts{ + "foo": "bar", + "austin": "1234", + "lena": "hello2", + "manu": "4321", + })) + + // /admin/secrets endpoint + // hit "localhost:8080/admin/secrets + authorized.GET("/secrets", func(c *gin.Context) { + // get user, it was set by the BasicAuth middleware + user := c.MustGet(gin.AuthUserKey).(string) + if secret, ok := secrets[user]; ok { + c.JSON(http.StatusOK, gin.H{"user": user, "secret": secret}) + } else { + c.JSON(http.StatusOK, gin.H{"user": user, "secret": "NO SECRET :("}) + } + }) + + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` @@ -1575,30 +1588,30 @@ When starting new Goroutines inside a middleware or handler, you **SHOULD NOT** ```go func main() { - r := gin.Default() + r := gin.Default() - r.GET("/long_async", func(c *gin.Context) { - // create copy to be used inside the goroutine - cCp := c.Copy() - go func() { - // simulate a long task with time.Sleep(). 5 seconds - time.Sleep(5 * time.Second) + r.GET("/long_async", func(c *gin.Context) { + // create copy to be used inside the goroutine + cCp := c.Copy() + go func() { + // simulate a long task with time.Sleep(). 5 seconds + time.Sleep(5 * time.Second) - // note that you are using the copied context "cCp", IMPORTANT - log.Println("Done! in path " + cCp.Request.URL.Path) - }() - }) + // note that you are using the copied context "cCp", IMPORTANT + log.Println("Done! in path " + cCp.Request.URL.Path) + }() + }) - r.GET("/long_sync", func(c *gin.Context) { - // simulate a long task with time.Sleep(). 5 seconds - time.Sleep(5 * time.Second) + r.GET("/long_sync", func(c *gin.Context) { + // simulate a long task with time.Sleep(). 5 seconds + time.Sleep(5 * time.Second) - // since we are NOT using a goroutine, we do not have to copy the context - log.Println("Done! in path " + c.Request.URL.Path) - }) + // since we are NOT using a goroutine, we do not have to copy the context + log.Println("Done! in path " + c.Request.URL.Path) + }) - // Listen and serve on 0.0.0.0:8080 - r.Run(":8080") + // Listen and serve on 0.0.0.0:8080 + r.Run(":8080") } ``` @@ -1608,24 +1621,25 @@ Use `http.ListenAndServe()` directly, like this: ```go func main() { - router := gin.Default() - http.ListenAndServe(":8080", router) + router := gin.Default() + http.ListenAndServe(":8080", router) } ``` + or ```go func main() { - router := gin.Default() - - s := &http.Server{ - Addr: ":8080", - Handler: router, - ReadTimeout: 10 * time.Second, - WriteTimeout: 10 * time.Second, - MaxHeaderBytes: 1 << 20, - } - s.ListenAndServe() + router := gin.Default() + + s := &http.Server{ + Addr: ":8080", + Handler: router, + ReadTimeout: 10 * time.Second, + WriteTimeout: 10 * time.Second, + MaxHeaderBytes: 1 << 20, + } + s.ListenAndServe() } ``` @@ -1637,22 +1651,22 @@ example for 1-line LetsEncrypt HTTPS servers. package main import ( - "log" - "net/http" + "log" + "net/http" - "github.com/gin-gonic/autotls" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/autotls" + "github.com/gin-gonic/gin" ) func main() { - r := gin.Default() + r := gin.Default() - // Ping handler - r.GET("/ping", func(c *gin.Context) { - c.String(http.StatusOK, "pong") - }) + // Ping handler + r.GET("/ping", func(c *gin.Context) { + c.String(http.StatusOK, "pong") + }) - log.Fatal(autotls.Run(r, "example1.com", "example2.com")) + log.Fatal(autotls.Run(r, "example1.com", "example2.com")) } ``` @@ -1662,29 +1676,29 @@ example for custom autocert manager. package main import ( - "log" - "net/http" + "log" + "net/http" - "github.com/gin-gonic/autotls" - "github.com/gin-gonic/gin" - "golang.org/x/crypto/acme/autocert" + "github.com/gin-gonic/autotls" + "github.com/gin-gonic/gin" + "golang.org/x/crypto/acme/autocert" ) func main() { - r := gin.Default() + r := gin.Default() - // Ping handler - r.GET("/ping", func(c *gin.Context) { - c.String(http.StatusOK, "pong") - }) + // Ping handler + r.GET("/ping", func(c *gin.Context) { + c.String(http.StatusOK, "pong") + }) - m := autocert.Manager{ - Prompt: autocert.AcceptTOS, - HostPolicy: autocert.HostWhitelist("example1.com", "example2.com"), - Cache: autocert.DirCache("/var/www/.cache"), - } + m := autocert.Manager{ + Prompt: autocert.AcceptTOS, + HostPolicy: autocert.HostWhitelist("example1.com", "example2.com"), + Cache: autocert.DirCache("/var/www/.cache"), + } - log.Fatal(autotls.RunWithManager(r, &m)) + log.Fatal(autotls.RunWithManager(r, &m)) } ``` @@ -1696,84 +1710,84 @@ See the [question](https://github.com/gin-gonic/gin/issues/346) and try the foll package main import ( - "log" - "net/http" - "time" + "log" + "net/http" + "time" - "github.com/gin-gonic/gin" - "golang.org/x/sync/errgroup" + "github.com/gin-gonic/gin" + "golang.org/x/sync/errgroup" ) var ( - g errgroup.Group + g errgroup.Group ) func router01() http.Handler { - e := gin.New() - e.Use(gin.Recovery()) - e.GET("/", func(c *gin.Context) { - c.JSON( - http.StatusOK, - gin.H{ - "code": http.StatusOK, - "error": "Welcome server 01", - }, - ) - }) + e := gin.New() + e.Use(gin.Recovery()) + e.GET("/", func(c *gin.Context) { + c.JSON( + http.StatusOK, + gin.H{ + "code": http.StatusOK, + "error": "Welcome server 01", + }, + ) + }) - return e + return e } func router02() http.Handler { - e := gin.New() - e.Use(gin.Recovery()) - e.GET("/", func(c *gin.Context) { - c.JSON( - http.StatusOK, - gin.H{ - "code": http.StatusOK, - "error": "Welcome server 02", - }, - ) - }) + e := gin.New() + e.Use(gin.Recovery()) + e.GET("/", func(c *gin.Context) { + c.JSON( + http.StatusOK, + gin.H{ + "code": http.StatusOK, + "error": "Welcome server 02", + }, + ) + }) - return e + return e } func main() { - server01 := &http.Server{ - Addr: ":8080", - Handler: router01(), - ReadTimeout: 5 * time.Second, - WriteTimeout: 10 * time.Second, - } - - server02 := &http.Server{ - Addr: ":8081", - Handler: router02(), - ReadTimeout: 5 * time.Second, - WriteTimeout: 10 * time.Second, - } - - g.Go(func() error { - err := server01.ListenAndServe() - if err != nil && err != http.ErrServerClosed { - log.Fatal(err) - } - return err - }) - - g.Go(func() error { - err := server02.ListenAndServe() - if err != nil && err != http.ErrServerClosed { - log.Fatal(err) - } - return err - }) - - if err := g.Wait(); err != nil { - log.Fatal(err) - } + server01 := &http.Server{ + Addr: ":8080", + Handler: router01(), + ReadTimeout: 5 * time.Second, + WriteTimeout: 10 * time.Second, + } + + server02 := &http.Server{ + Addr: ":8081", + Handler: router02(), + ReadTimeout: 5 * time.Second, + WriteTimeout: 10 * time.Second, + } + + g.Go(func() error { + err := server01.ListenAndServe() + if err != nil && err != http.ErrServerClosed { + log.Fatal(err) + } + return err + }) + + g.Go(func() error { + err := server02.ListenAndServe() + if err != nil && err != http.ErrServerClosed { + log.Fatal(err) + } + return err + }) + + if err := g.Wait(); err != nil { + log.Fatal(err) + } } ``` @@ -1794,9 +1808,9 @@ endless.ListenAndServe(":4242", router) Alternatives: -* [manners](https://github.com/braintree/manners): A polite Go HTTP server that shuts down gracefully. -* [graceful](https://github.com/tylerb/graceful): Graceful is a Go package enabling graceful shutdown of an http.Handler server. * [grace](https://github.com/facebookgo/grace): Graceful restart & zero downtime deploy for Go servers. +* [graceful](https://github.com/tylerb/graceful): Graceful is a Go package enabling graceful shutdown of an http.Handler server. +* [manners](https://github.com/braintree/manners): A polite Go HTTP server that shuts down gracefully. #### Manually @@ -1808,57 +1822,57 @@ In case you are using Go 1.8 or a later version, you may not need to use those l package main import ( - "context" - "log" - "net/http" - "os" - "os/signal" - "syscall" - "time" - - "github.com/gin-gonic/gin" + "context" + "log" + "net/http" + "os" + "os/signal" + "syscall" + "time" + + "github.com/gin-gonic/gin" ) func main() { - router := gin.Default() - router.GET("/", func(c *gin.Context) { - time.Sleep(5 * time.Second) - c.String(http.StatusOK, "Welcome Gin Server") - }) - - srv := &http.Server{ - Addr: ":8080", - Handler: router, - } - - // Initializing the server in a goroutine so that - // it won't block the graceful shutdown handling below - go func() { - if err := srv.ListenAndServe(); err != nil && errors.Is(err, http.ErrServerClosed) { - log.Printf("listen: %s\n", err) - } - }() - - // Wait for interrupt signal to gracefully shutdown the server with - // a timeout of 5 seconds. - quit := make(chan os.Signal) - // kill (no param) default send syscall.SIGTERM - // kill -2 is syscall.SIGINT - // kill -9 is syscall.SIGKILL but can't be caught, so don't need to add it - signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM) - <-quit - log.Println("Shutting down server...") - - // The context is used to inform the server it has 5 seconds to finish - // the request it is currently handling - ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) - defer cancel() - - if err := srv.Shutdown(ctx); err != nil { - log.Fatal("Server forced to shutdown:", err) - } - - log.Println("Server exiting") + router := gin.Default() + router.GET("/", func(c *gin.Context) { + time.Sleep(5 * time.Second) + c.String(http.StatusOK, "Welcome Gin Server") + }) + + srv := &http.Server{ + Addr: ":8080", + Handler: router, + } + + // Initializing the server in a goroutine so that + // it won't block the graceful shutdown handling below + go func() { + if err := srv.ListenAndServe(); err != nil && errors.Is(err, http.ErrServerClosed) { + log.Printf("listen: %s\n", err) + } + }() + + // Wait for interrupt signal to gracefully shutdown the server with + // a timeout of 5 seconds. + quit := make(chan os.Signal) + // kill (no param) default send syscall.SIGTERM + // kill -2 is syscall.SIGINT + // kill -9 is syscall.SIGKILL but can't be caught, so don't need to add it + signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM) + <-quit + log.Println("Shutting down server...") + + // The context is used to inform the server it has 5 seconds to finish + // the request it is currently handling + ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) + defer cancel() + + if err := srv.Shutdown(ctx); err != nil { + log.Fatal("Server forced to shutdown:", err) + } + + log.Println("Server exiting") } ``` @@ -1870,38 +1884,38 @@ You can build a server into a single binary containing templates by using [go-as ```go func main() { - r := gin.New() + r := gin.New() - t, err := loadTemplate() - if err != nil { - panic(err) - } - r.SetHTMLTemplate(t) + t, err := loadTemplate() + if err != nil { + panic(err) + } + r.SetHTMLTemplate(t) - r.GET("/", func(c *gin.Context) { - c.HTML(http.StatusOK, "/html/index.tmpl",nil) - }) - r.Run(":8080") + r.GET("/", func(c *gin.Context) { + c.HTML(http.StatusOK, "/html/index.tmpl",nil) + }) + r.Run(":8080") } // loadTemplate loads templates embedded by go-assets-builder func loadTemplate() (*template.Template, error) { - t := template.New("") - for name, file := range Assets.Files { - defer file.Close() - if file.IsDir() || !strings.HasSuffix(name, ".tmpl") { - continue - } - h, err := ioutil.ReadAll(file) - if err != nil { - return nil, err - } - t, err = t.New(name).Parse(string(h)) - if err != nil { - return nil, err - } - } - return t, nil + t := template.New("") + for name, file := range Assets.Files { + defer file.Close() + if file.IsDir() || !strings.HasSuffix(name, ".tmpl") { + continue + } + h, err := ioutil.ReadAll(file) + if err != nil { + return nil, err + } + t, err = t.New(name).Parse(string(h)) + if err != nil { + return nil, err + } + } + return t, nil } ``` @@ -1972,7 +1986,7 @@ func main() { Using the command `curl` command result: -``` +```sh $ curl "http://localhost:8080/getb?field_a=hello&field_b=world" {"a":{"FieldA":"hello"},"b":"world"} $ curl "http://localhost:8080/getc?field_a=hello&field_c=world" @@ -2031,10 +2045,10 @@ func SomeHandler(c *gin.Context) { } ``` -* `c.ShouldBindBodyWith` stores body into the context before binding. This has +1. `c.ShouldBindBodyWith` stores body into the context before binding. This has a slight impact to performance, so you should not use this method if you are enough to call binding at once. -* This feature is only needed for some formats -- `JSON`, `XML`, `MsgPack`, +2. This feature is only needed for some formats -- `JSON`, `XML`, `MsgPack`, `ProtoBuf`. For other formats, `Query`, `Form`, `FormPost`, `FormMultipart`, can be called by `c.ShouldBind()` multiple times without any damage to performance (See [#1341](https://github.com/gin-gonic/gin/pull/1341)). @@ -2043,54 +2057,54 @@ performance (See [#1341](https://github.com/gin-gonic/gin/pull/1341)). ```go const ( - customerTag = "url" - defaultMemory = 32 << 20 + customerTag = "url" + defaultMemory = 32 << 20 ) type customerBinding struct {} func (customerBinding) Name() string { - return "form" + return "form" } func (customerBinding) Bind(req *http.Request, obj interface{}) error { - if err := req.ParseForm(); err != nil { - return err - } - if err := req.ParseMultipartForm(defaultMemory); err != nil { - if err != http.ErrNotMultipart { - return err - } - } - if err := binding.MapFormWithTag(obj, req.Form, customerTag); err != nil { - return err - } - return validate(obj) + if err := req.ParseForm(); err != nil { + return err + } + if err := req.ParseMultipartForm(defaultMemory); err != nil { + if err != http.ErrNotMultipart { + return err + } + } + if err := binding.MapFormWithTag(obj, req.Form, customerTag); err != nil { + return err + } + return validate(obj) } func validate(obj interface{}) error { - if binding.Validator == nil { - return nil - } - return binding.Validator.ValidateStruct(obj) + if binding.Validator == nil { + return nil + } + return binding.Validator.ValidateStruct(obj) } // Now we can do this!!! // FormA is a external type that we can't modify it's tag type FormA struct { - FieldA string `url:"field_a"` + FieldA string `url:"field_a"` } func ListHandler(s *Service) func(ctx *gin.Context) { - return func(ctx *gin.Context) { - var urlBinding = customerBinding{} - var opt FormA - err := ctx.MustBindWith(&opt, urlBinding) - if err != nil { - ... - } - ... - } + return func(ctx *gin.Context) { + var urlBinding = customerBinding{} + var opt FormA + err := ctx.MustBindWith(&opt, urlBinding) + if err != nil { + ... + } + ... + } } ``` @@ -2102,11 +2116,11 @@ http.Pusher is supported only **go1.8+**. See the [golang blog](https://blog.gol package main import ( - "html/template" - "log" - "net/http" + "html/template" + "log" + "net/http" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) var html = template.Must(template.New("https").Parse(` @@ -2122,31 +2136,32 @@ var html = template.Must(template.New("https").Parse(` `)) func main() { - r := gin.Default() - r.Static("/assets", "./assets") - r.SetHTMLTemplate(html) - - r.GET("/", func(c *gin.Context) { - if pusher := c.Writer.Pusher(); pusher != nil { - // use pusher.Push() to do server push - if err := pusher.Push("/assets/app.js", nil); err != nil { - log.Printf("Failed to push: %v", err) - } - } - c.HTML(http.StatusOK, "https", gin.H{ - "status": "success", - }) - }) + r := gin.Default() + r.Static("/assets", "./assets") + r.SetHTMLTemplate(html) + + r.GET("/", func(c *gin.Context) { + if pusher := c.Writer.Pusher(); pusher != nil { + // use pusher.Push() to do server push + if err := pusher.Push("/assets/app.js", nil); err != nil { + log.Printf("Failed to push: %v", err) + } + } + c.HTML(http.StatusOK, "https", gin.H{ + "status": "success", + }) + }) - // Listen and Server in https://127.0.0.1:8080 - r.RunTLS(":8080", "./testdata/server.pem", "./testdata/server.key") + // Listen and Server in https://127.0.0.1:8080 + r.RunTLS(":8080", "./testdata/server.pem", "./testdata/server.key") } ``` ### Define format for the log of routes The default log of routes is: -``` + +```sh [GIN-debug] POST /foo --> main.main.func1 (3 handlers) [GIN-debug] GET /bar --> main.main.func2 (3 handlers) [GIN-debug] GET /status --> main.main.func3 (3 handlers) @@ -2154,34 +2169,35 @@ The default log of routes is: If you want to log this information in given format (e.g. JSON, key values or something else), then you can define this format with `gin.DebugPrintRouteFunc`. In the example below, we log all routes with standard log package but you can use another log tools that suits of your needs. + ```go import ( - "log" - "net/http" + "log" + "net/http" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) func main() { - r := gin.Default() - gin.DebugPrintRouteFunc = func(httpMethod, absolutePath, handlerName string, nuHandlers int) { - log.Printf("endpoint %v %v %v %v\n", httpMethod, absolutePath, handlerName, nuHandlers) - } + r := gin.Default() + gin.DebugPrintRouteFunc = func(httpMethod, absolutePath, handlerName string, nuHandlers int) { + log.Printf("endpoint %v %v %v %v\n", httpMethod, absolutePath, handlerName, nuHandlers) + } - r.POST("/foo", func(c *gin.Context) { - c.JSON(http.StatusOK, "foo") - }) + r.POST("/foo", func(c *gin.Context) { + c.JSON(http.StatusOK, "foo") + }) - r.GET("/bar", func(c *gin.Context) { - c.JSON(http.StatusOK, "bar") - }) + r.GET("/bar", func(c *gin.Context) { + c.JSON(http.StatusOK, "bar") + }) - r.GET("/status", func(c *gin.Context) { - c.JSON(http.StatusOK, "ok") - }) + r.GET("/status", func(c *gin.Context) { + c.JSON(http.StatusOK, "ok") + }) - // Listen and Server in http://0.0.0.0:8080 - r.Run() + // Listen and Server in http://0.0.0.0:8080 + r.Run() } ``` @@ -2233,52 +2249,53 @@ unnecessary computation. ```go import ( - "fmt" + "fmt" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) func main() { - router := gin.Default() - router.SetTrustedProxies([]string{"192.168.1.2"}) + router := gin.Default() + router.SetTrustedProxies([]string{"192.168.1.2"}) - router.GET("/", func(c *gin.Context) { - // If the client is 192.168.1.2, use the X-Forwarded-For - // header to deduce the original client IP from the trust- - // worthy parts of that header. - // Otherwise, simply return the direct client IP - fmt.Printf("ClientIP: %s\n", c.ClientIP()) - }) - router.Run() + router.GET("/", func(c *gin.Context) { + // If the client is 192.168.1.2, use the X-Forwarded-For + // header to deduce the original client IP from the trust- + // worthy parts of that header. + // Otherwise, simply return the direct client IP + fmt.Printf("ClientIP: %s\n", c.ClientIP()) + }) + router.Run() } ``` **Notice:** If you are using a CDN service, you can set the `Engine.TrustedPlatform` to skip TrustedProxies check, it has a higher priority than TrustedProxies. Look at the example below: + ```go import ( - "fmt" + "fmt" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) func main() { - router := gin.Default() - // Use predefined header gin.PlatformXXX - router.TrustedPlatform = gin.PlatformGoogleAppEngine - // Or set your own trusted request header for another trusted proxy service - // Don't set it to any suspect request header, it's unsafe - router.TrustedPlatform = "X-CDN-IP" + router := gin.Default() + // Use predefined header gin.PlatformXXX + router.TrustedPlatform = gin.PlatformGoogleAppEngine + // Or set your own trusted request header for another trusted proxy service + // Don't set it to any suspect request header, it's unsafe + router.TrustedPlatform = "X-CDN-IP" - router.GET("/", func(c *gin.Context) { - // If you set TrustedPlatform, ClientIP() will resolve the - // corresponding header and return IP directly - fmt.Printf("ClientIP: %s\n", c.ClientIP()) - }) - router.Run() + router.GET("/", func(c *gin.Context) { + // If you set TrustedPlatform, ClientIP() will resolve the + // corresponding header and return IP directly + fmt.Printf("ClientIP: %s\n", c.ClientIP()) + }) + router.Run() } ``` @@ -2290,22 +2307,22 @@ The `net/http/httptest` package is preferable way for HTTP testing. package main import ( - "net/http" + "net/http" - "github.com/gin-gonic/gin" + "github.com/gin-gonic/gin" ) func setupRouter() *gin.Engine { - r := gin.Default() - r.GET("/ping", func(c *gin.Context) { - c.String(http.StatusOK, "pong") - }) - return r + r := gin.Default() + r.GET("/ping", func(c *gin.Context) { + c.String(http.StatusOK, "pong") + }) + return r } func main() { - r := setupRouter() - r.Run(":8080") + r := setupRouter() + r.Run(":8080") } ``` @@ -2315,22 +2332,22 @@ Test for code example above: package main import ( - "net/http" - "net/http/httptest" - "testing" + "net/http" + "net/http/httptest" + "testing" - "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/assert" ) func TestPingRoute(t *testing.T) { - router := setupRouter() + router := setupRouter() - w := httptest.NewRecorder() - req, _ := http.NewRequest(http.MethodGet, "/ping", nil) - router.ServeHTTP(w, req) + w := httptest.NewRecorder() + req, _ := http.NewRequest(http.MethodGet, "/ping", nil) + router.ServeHTTP(w, req) - assert.Equal(t, http.StatusOK, w.Code) - assert.Equal(t, "pong", w.Body.String()) + assert.Equal(t, http.StatusOK, w.Code) + assert.Equal(t, "pong", w.Body.String()) } ``` @@ -2345,4 +2362,3 @@ Awesome project lists using [Gin](https://github.com/gin-gonic/gin) web framewor * [picfit](https://github.com/thoas/picfit): An image resizing server written in Go. * [brigade](https://github.com/brigadecore/brigade): Event-based Scripting for Kubernetes. * [dkron](https://github.com/distribworks/dkron): Distributed, fault tolerant job scheduling system. -