gin print request and response

gistfile1.txt

```
package router

import (
	"aicloud/common"
	"bytes"
	"io"
	"io/ioutil"
	"time"
        "fmt"
	"github.com/gin-gonic/gin"
)

type bodyLog struct {
	gin.ResponseWriter
	body *bytes.Buffer
}

// Write write
func (w bodyLog) Write(b []byte) (int, error) {
	w.body.Write(b)
	return w.ResponseWriter.Write(b)
}

// Logger request logger
func Logger() gin.HandlerFunc {
	return func(c *gin.Context) {
		buf, _ := ioutil.ReadAll(c.Request.Body)
		b1 := ioutil.NopCloser(bytes.NewBuffer(buf))
		b2 := ioutil.NopCloser(bytes.NewBuffer(buf))

		uri := c.Request.RequestURI

		info := map[string]interface{}{
			"type": "REQUEST",
			"req":  readBody(b1),
			"uri":  uri,
		}

		// request
		c.Request.Body = b2

		// response
		bw := &bodyLog{
			body:           bytes.NewBufferString(""),
			ResponseWriter: c.Writer,
		}
		c.Writer = bw

		t := time.Now()

		c.Next()

		info["Duration"] = time.Since(t).String()

		statusCode := c.Writer.Status()
		// if statusCode >= 400 {
		// 	info["resp"] = bw.body.String()
		// }
		info["status"] = statusCode
		info["resp"] = bw.body.String()
		fmt.Println(info)
	}
}

func readBody(r io.Reader) string {
	b := new(bytes.Buffer)
	b.ReadFrom(r)

	return b.String()
}
```