从0开始学go第八天

gin获取URL路径参数

package main//获取path（URL）参数
import ("net/http""github.com/gin-gonic/gin"
)func main() {r := gin.Default()r.GET("/:name/:age", func(c *gin.Context) {//获取路径参数name := c.Param("name")age := c.Param("age")c.JSON(http.StatusOK, gin.H{"name": name,"age":  age,})})r.Run(":9090")
}

参数绑定

原来代码很累

package main//获取path（URL）参数
import ("fmt""net/http""os/user""github.com/gin-gonic/gin"
)
type UserInfo struct{username stringpassword string
}func main() {r := gin.Default()r.GET("/user", func(c *gin.Context) {username := c.Query("username")password := c.Query("password")u := UserInfo{username: username,password: password,}fmt.Printf("%#v\n",u)c.JSON(http.StatusOK,gin.H{"massage" : "ok",})})})r.Run(":9090")
}

现在：

shouldbind非常强大，三种方式都能获取参数

package main//获取path（URL）参数
import ("fmt""net/http""os/user""github.com/gin-gonic/gin"
)
type UserInfo struct{Username string `form:"username"`Password string `form:"password"`
}func main() {r := gin.Default()r.GET("/user", func(c *gin.Context) {var u UserInfoerr := c.ShouldBind(u)if err != nil{c.JSON(http.StatusBadRequest,gin.H{"error" : err.Error(),})}else{//用到反射，我不知道用户给我传进来什么字段，要用反射动态获取fmt.Printf("%#v\n",&u)c.JSON(http.StatusOK,gin.H{"status":"ok",})}})})r.Run(":9090")
}