golang gin 返回json

?

package main

 

import (

    "github.com/gin-gonic/gin"

    "net/http"

)

 

type UserInfo struct {

    Message string

    Name    string

    Age     int

}

 

type Student struct {

    Name string `json:"name"` // 序列化 体现在输出的的时候 就变成小写了

    Age  int    `json:"age"`

}

 

func main() {

    r := gin.Default()

    r.GET("/json", func(c *gin.Context) {

        //方法1 map

 

        data := map[string]interface{}{

            "message": "hello",

            "name":    "stefan",

            "age":     20,

        }

 

        c.JSON(http.StatusOK, data)

 

    })

 

    r.GET("/anotherjson", func(c *gin.Context) {

        //方法二 结构体

        data := &UserInfo{

            Message: "wahahah",

            Name:    "stefan",

            Age:     22,

        }

 

        c.JSON(http.StatusOK, data)

 

    })

 

    // json序列化

    r.GET("/test", func(c *gin.Context) {

        data := &Student{

            Name: "xiaoming",

            Age:  23,

        }

        c.JSON(http.StatusOK, data)

    })

 

    /* 输出

    {"name":"xiaoming","age":23}

    */

 

    r.Run(":9999")

}