JSON数据解析和绑定 ShouldBindJSON

客户端传参，后端解析绑定

package main

import (
  "github.com/gin-gonic/gin"
  "net/http"
)

type Login struct {
  UserName string `form:"username" json:"username" uri:"username" xml:"username" binding:"required"`
  Password string `form:"password" json:"password" uri:"password"  xml:"password" binding:"required"`
}

func main() {
   //创建路由
  r := gin.Default()
   //创建POST请求
  r.POST("/login", func(context *gin.Context) {
      var login Login
       //把body映射到结构体里面取
      if err := context.ShouldBindJSON(&login); err != nil {
          context.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
          return
      }
      if login.UserName != "root" || login.Password != "admin" {
          context.JSON(http.StatusBadRequest, gin.H{"status": "304"})
          return
      }
       //返回json格式
      context.JSON(http.StatusOK, gin.H{"status": 200})
  })
  r.Run(":8088")
}

postman进行测试

//request
{
"username":"root",
"password":"admin"
}
//result
{
   "status": 200
}

表单数据解析和绑定 Bind()

package main

import (
  "github.com/gin-gonic/gin"
  "net/http"
)

type Login struct {
  UserName string `form:"username" json:"username" uri:"username" xml:"username" binding:"required"`
  Password string `form:"password" json:"password" uri:"password"  xml:"password" binding:"required"`
}

func main() {
    //创建路由
  r := gin.Default()
    //创建POST请求
  r.POST("/login", func(context *gin.Context) {
      var form Login
        //Bind默认解析并绑定form格式
      if err := context.Bind(&login); err != nil {
          context.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
          return
      }
      if form.UserName != "root" || form.Password != "admin" {
          context.JSON(http.StatusBadRequest, gin.H{"status": "304"})
          return
      }
        //返回json格式
      context.JSON(http.StatusOK, gin.H{"status": 200})
  })
  r.Run(":8088")
}

URL数据解析和绑定

package main

import (
  "github.com/gin-gonic/gin"
  "net/http"
)

type Login struct {
  UserName string `form:"username" json:"username" uri:"username" xml:"username" binding:"required"`
  Password string `form:"password" json:"password" uri:"password"  xml:"password" binding:"required"`
}

func main() {
    //创建路由
  r := gin.Default()
    //创建POST请求
  r.POST("/login", func(context *gin.Context) {
      var form Login
        //ShouldBindUri绑定URL格式
      if err := context.ShouldBindUri(&login); err != nil {
          context.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
          return
      }
      if form.UserName != "root" || form.Password != "admin" {
          context.JSON(http.StatusBadRequest, gin.H{"status": "304"})
          return
      }
        //返回json格式
      context.JSON(http.StatusOK, gin.H{"status": 200})
  })
  r.Run(":8088")
}

响应格式

c.JSON()//json格式响应
c.XML()//XML格式响应
c.YAML()//YAML格式响应
c.ProtoBuf()//ProtoBuf 谷歌开发的高效存储读取工具

同步异步

goroutine 机制可以方便的实现异步处理。