Golang 关于Gin框架请求参数的获取方法

package main
import (
    "github.com/gin-gonic/gin"
    "net/http"
)
func main() {
    engine := gin.Default()
    //请求参数 用:变量名 表示
    engine.GET("/user/:id", func(ctx *gin.Context) {
        //后台获取请求参数通过ctx.Param("参数名") 来获取
        id := ctx.Param("id")
        //响应到页面
        //fmt.Fprintf(ctx.Writer, "你的请求id: %s", id)
        ctx.String(http.StatusOK, "您的id是%s", id)
    })
    engine.Run()
}

package main
import (
    "fmt"
    "github.com/gin-gonic/gin"
    "net/http"
)
func main() {
    engine := gin.Default()
    engine.GET("/user/list", func(ctx *gin.Context) {
        name := ctx.Query("name")
        gender := ctx.DefaultQuery("gender", "男")
        habits := ctx.QueryArray("habits")
        fmt.Printf("name: %s, gender: %s, habits: %v\n", name, gender, habits)
        works := ctx.QueryMap("works")
        //响应到页面
        ctx.String(http.StatusOK, "%s, %s, %v, %s\n", name, gender, habits, works)
    })
    engine.Run(":8080")
}

package main
import (
    "fmt"
    "github.com/gin-gonic/gin"
)
func main() {
    engine := gin.Default()
    //使用post请求
    engine.POST("/user/add", func(ctx *gin.Context) {
        name := ctx.PostForm("name")
        gender := ctx.DefaultPostForm("gender", "男")
        //获取切片数据
        habits := ctx.PostFormArray("habits")
        //获取map数据
        works := ctx.PostFormMap("works")
        fmt.Printf("%s, %s, %v, %s\n", name, gender, habits, works)
    })
    engine.Run()
}

package main
import (
    "github.com/gin-gonic/gin"
    "net/http"
)
func main() {
    engine := gin.Default()
    engine.POST("/getHeader", func(ctx *gin.Context) {
        //拿到请求头参数数据
        userAgent := ctx.GetHeader("User-Agent")
        ctx.String(http.StatusOK, "User-Agent: %s", userAgent)
    })
    engine.Run()
}

package main
import (
    "github.com/gin-gonic/gin"
    "net/http"
)
// User 定义结构体，使用form标签指定参数名，以便正确地绑定参数 get请求使用功能form标签
type User struct {
    Id    int64  `form:"id"`
    Name  string `form:"name"`
    Age   int    `form:"age"`
    Email string `form:"email"`
}
func main() {
    engine := gin.Default()
    engine.GET("/user/info", func(ctx *gin.Context) {
        var user User
        //将结构体对象指针传进去
        if err := ctx.ShouldBindQuery(&user); err != nil {
            ctx.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
            return
        }
        //以json字符串的方式响应给客户端这个结构体对象
        ctx.JSON(http.StatusOK, user)
    })
    engine.Run()
}

package main
import (
    "github.com/gin-gonic/gin"
    "net/http"
)
// User 绑定HTTP Body参数到结构体 ，创建结构体时需要用json标签
type User struct {
    Id    int64  `json:"id"`
    Name  string `json:"name"`
    Age   int    `json:"age"`
    Email string `json:"email"`
}
func main() {
    engine := gin.Default()
    engine.POST("/user/add", func(ctx *gin.Context) {
        var user User
        // ctx.ShouldBindJSON(&user) 将结构体指针传进去
        if err := ctx.ShouldBindJSON(&user); err != nil {
            ctx.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
            return
        }
        //响应给客户端结构体
        ctx.JSON(http.StatusOK, user)
    })
    engine.Run()
}

package main
import (
    "encoding/json"
    "github.com/gin-gonic/gin"
    "net/http"
)
func main() {
    engine := gin.Default()
    engine.POST("/json", func(ctx *gin.Context) {
        // GetRawData : 从c.Request.Body读取请求数据, 返回 []byte
        // func (c *Context) GetRawData() ([]byte, error)
        b, _ := ctx.GetRawData()
        // 定义map或结构体接收
        var m map[string]interface{}
        // 将接收的b json反序列化为map数据
        _ = json.Unmarshal(b, &m)
        ctx.JSON(http.StatusOK, m)
    })
    engine.Run()
}