JSON数据解析和绑定 ShouldBindJSON

客户端传参，后端解析绑定

```go 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”) }

  2. > postman进行测试
  4. > ```json
  5. //request
  6. {
  7. "username":"root",
  8. "password":"admin"
  9. }
  10. //result
  11. {
  12.    "status": 200
  13. }

表单数据解析和绑定 Bind()

```go 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”) }

  4. <a name="5d74f98f"></a>
  5. #### URL数据解析和绑定
  8. > ```go
  9. package main
  11. import (
  12.     "github.com/gin-gonic/gin"
  13.     "net/http"
  14. )
  16. type Login struct {
  17.     UserName string `form:"username" json:"username" uri:"username" xml:"username" binding:"required"`
  18.     Password string `form:"password" json:"password" uri:"password"  xml:"password" binding:"required"`
  19. }
  21. func main() {
  22.     //创建路由
  23.     r := gin.Default()
  24.     //创建POST请求
  25.     r.POST("/login", func(context *gin.Context) {
  26.         var form Login
  27.         //ShouldBindUri绑定URL格式
  28.         if err := context.ShouldBindUri(&login); err != nil {
  29.             context.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
  30.             return
  31.         }
  32.         if form.UserName != "root" || form.Password != "admin" {
  33.             context.JSON(http.StatusBadRequest, gin.H{"status": "304"})
  34.             return
  35.         }
  36.         //返回json格式
  37.         context.JSON(http.StatusOK, gin.H{"status": 200})
  38.     })
  39.     r.Run(":8088")
  40. }

响应格式

  1. c.JSON()//json格式响应
  2. c.XML()//XML格式响应
  3. c.YAML()//YAML格式响应
  4. 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。