ctx.Request().body only fetch once

[wyanlord]

I get it in middleware. And I cannot get it in handler again.

[kataras]

Hello @wyanlord, this is a net/http (comes from Body.Read method which consumes data this is basic golang knowedge) behavior.

• If you read json/xml and etc from body you can override that behavior by app.Run(iris.Addr(...), iris.WithoutBodyConsumptionOnUnmarshal). Read more at: Can not read JSON body on different middleware functions #1265

• If you use ioutil.ReadAll(ctx.Request().Body) then do that instead:

data, err := ioutil.ReadAll(ctx.Request().Body)
if err != nil {
	return err
}

ctx.Request().Body = ioutil.NopCloser(bytes.NewBuffer(data))

Hope that helped.

[wyanlord]

I hope I can keep it in the iris.context structure after form param parsed.
This native body is used in many places.

[wyanlord]

// 获取iris的请求体
func RequestBody(ctx context.Context) string {
	var requestBody string
	data, err := ioutil.ReadAll(ctx.Request().Body)
	if err == nil {
		requestBody = string(data)
		ctx.Request().Body = ioutil.NopCloser(bytes.NewBuffer(data))
	}
	return requestBody
}

// 请求日志记录
func NewAccessLogMdw() iris.Handler {
	return func(ctx context.Context) {
		fmt.Println(helper.RequestBody(ctx))

		fmt.Println(ctx.FormValues())

		fmt.Println(helper.RequestBody(ctx))

		ctx.Next()
	}
}

when post http://localhost:8080/users?c=5 with b=3.
The result is:

b=3
map[b:[3] c:[5]]
nil

And I had used iris.WithoutBodyConsumptionOnUnmarshal

[kataras]

So your issue here was the ctx.FormValues.

Fixed with bf3f306 on the upcoming v11.2 release.

That was a good bug report, thank you a lot @wyanlord and sorry for the duplicate label but please next time provide me a code snippet like this from the first place so I can be more helpful