httpx.Parse doesn't support unmarshal map[uint32]string

[qiushye]

Describe the bug
I define a struct with type map[int]string, but ut panic after running httpx.Parse function, while json.Unmarshal works.

To Reproduce
Steps to reproduce the behavior, if applicable:

1. The code is

func Test_Unmarshal(t *testing.T) {
	var (
		ast = assert.New(t)
	)

	type Customer struct {
		Names map[int]string `json:"names"`
	}

	reqString := `{
    "names": {
			"19":"Tom"
		}
}`

	var args Customer
	err := json.Unmarshal([]byte(reqString), &args)
	ast.Nil(err)

	r, err := http.NewRequest(http.MethodPost, "", bytes.NewReader([]byte(reqString)))
	ast.Nil(err)
	r.Header.Set(header.ContentType, header.ApplicationJson)
	err = httpx.Parse(r, &args)
	ast.Nil(err)
}

2. The error is

   --- FAIL: Test_Unmarshal (0.00s)
panic: reflect.Value.SetMapIndex: value of type string is not assignable to type int [recovered]
	panic: reflect.Value.SetMapIndex: value of type string is not assignable to type int

goroutine 53 [running]:
testing.tRunner.func1.2({0x102d9e880, 0x14000517bf0})
	/usr/local/go/src/testing/testing.go:1389 +0x1c8
testing.tRunner.func1()
	/usr/local/go/src/testing/testing.go:1392 +0x384
panic({0x102d9e880, 0x14000517bf0})
	/usr/local/go/src/runtime/panic.go:838 +0x204
reflect.Value.assignTo({0x102d9e880?, 0x14000517bc0?, 0x5488?}, {0x102ae66bc, 0x19}, 0x102d9dc40, 0x0)
	/usr/local/go/src/reflect/value.go:3062 +0x210
reflect.Value.SetMapIndex({0x102df7f00?, 0x140005f4030?, 0x102f86348?}, {0x102d9e880, 0x14000517bc0, 0x98}, {0x102d9e880, 0x14000517be0, 0x98})
	/usr/local/go/src/reflect/value.go:2234 +0x1ec
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).generateMap(0x102e661a0?, {0x102f86348?, 0x102d9dc40?}, {0x102f86348, 0x102d9e880}, {0x102dfb140?, 0x14000561fb0})
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:334 +0x628
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).fillMap(0x102f86348?, {0x102f86348, 0x102df7f00}, {0x102df7f00?, 0x140005240c8?, 0x10255314c?}, {0x102dfb140, 0x14000561fb0})
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:90 +0xa8
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).processFieldNotFromString(0x102f86348?, {0x102f86348, 0x102df7f00}, {0x102df7f00?, 0x140005240c8?, 0x5?}, {{0x102dfb140?, 0x14000561fb0?}, {0x102f7c3e0?, 0x140005f00a0?}}, ...)
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:478 +0x1e0
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).processNamedFieldWithValue(0x1400007e3c0, {0x102f86348, 0x102df7f00}, {0x102df7f00?, 0x140005240c8?, 0x0?}, {{0x102dfb140?, 0x14000561fb0?}, {0x102f7c3e0?, 0x140005f00a0?}}, ...)
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:693 +0x158
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).processNamedField(0x1400007e3c0, {{0x102d1d370, 0x5}, {0x0, 0x0}, {0x102f86348, 0x102df7f00}, {0x102d1d376, 0xc}, 0x0, ...}, ...)
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:663 +0x234
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).processField(0x1400007e3c0?, {{0x102d1d370, 0x5}, {0x0, 0x0}, {0x102f86348, 0x102df7f00}, {0x102d1d376, 0xc}, 0x0, ...}, ...)
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:456 +0x184
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).unmarshalWithFullName(0x102e901c0?, {0x102f7c3e0, 0x140005f0080}, {0x102d647e0, 0x140005240c8}, {0x0, 0x0})
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:782 +0x338
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).UnmarshalValuer(...)
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:80
github.com/zeromicro/go-zero/core/mapping.(*Unmarshaler).Unmarshal(...)
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/unmarshaler.go:75
github.com/zeromicro/go-zero/core/mapping.unmarshalJsonReader({0x102f78028, 0x14000506378}, {0x102d647e0, 0x140005240c8}, 0x102adb501?)
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/jsonunmarshaler.go:51 +0xc0
github.com/zeromicro/go-zero/core/mapping.UnmarshalJsonReader({0x102f78028, 0x14000506378}, {0x102d647e0, 0x140005240c8}, {0x0?, 0x0?, 0x0?})
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/core/mapping/jsonunmarshaler.go:25 +0x58
github.com/zeromicro/go-zero/rest/httpx.ParseJsonBody(0x14000512400, {0x102d647e0, 0x140005240c8})
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/rest/httpx/requests.go:86 +0xb8
github.com/zeromicro/go-zero/rest/httpx.Parse(0x14000512400, {0x102d647e0, 0x140005240c8})
	/Users/qiushye/go/pkg/mod/github.com/zeromicro/go-zero@v1.100.6/rest/httpx/requests.go:42 +0x78
github.com/qbox/jarvis/cmd/jarvis/internal/logic/common/customer.Test_Unmarshal(0x0?)
	/Users/qiushye/qbox/jarvis/cmd/jarvis/internal/logic/common/customer/common_test.go:65 +0x244
testing.tRunner(0x140005d8680, 0x102f70020)
	/usr/local/go/src/testing/testing.go:1439 +0x110
created by testing.(*T).Run
	/usr/local/go/src/testing/testing.go:1486 +0x300

Environments (please complete the following information):

• OS: darwin/arm64
• go-zero version [1.18]
• goctl version [1.3.4]

More description
Add any other context about the problem here.

[kevwan]

"19" is not int.

[kevwan]

@qiushye please check the fix.

[qiushye]

"19" is not int.

"19"is the json format of 19，you can compare the go-zero unmarshal result with json unmarshal result from my case, the latter one works.

[github-actions]

This issue is stale because it has been open for 30 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 14 days since being marked as stale.