Gin之获取path参数

注：本文基于Windos系统上Go SDK v1.17.5、github.com/gin-gonic/gin v1.7.7依赖进行讲解

1.path参数介绍

path：即URL路径参数

2.获取一个":"path参数(Param方法)

package main

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

func main() {
	r := gin.Default()
	r.GET("/users/:id", func(c *gin.Context) {
		id := c.Param("id")
		c.JSON(http.StatusOK, gin.H{
			"message": "ok",
			"id":      id,
		})
	})

	r.Run(":8080")
}

3. 获取二个":"path参数(Param方法)

package main

import (
	"github.com/gin-gonic/gin"
	"net/http"
)
func main() {
	r := gin.Default()
	r.GET("/user/search/:username/:address", func(c *gin.Context) {
		username := c.Param("username") //
		address := c.Param("address")
		c.JSON(http.StatusOK, gin.H{
			"message":  "ok",
			"username": username,
			"address":  address,
		})
	})

	r.Run(":8080")
}

4.获取"*"path参数(Param方法)

package main

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

func main() {
	r := gin.Default()
	r.GET("/user/search/:username/*address", func(c *gin.Context) {
		username := c.Param("username")
		address := c.Param("address")
		c.JSON(http.StatusOK, gin.H{
			"message":  "ok",
			"username": username,
			"address":  address,
		})
	})

	r.Run(":8080")
}

如果访问http://localhost:8080/user/search/:dafa的换，系统会被重定向到http://localhost:8080/user/search/:dafa/,浏览器并且输出：{“address”:“/”,“message”:“ok”,“username”:“:dafa”}

如果单独访问http://localhost:8080/user/search/:dafa/的话，浏览器输出：{“address”:“/”,“message”:“ok”,“username”:“:dafa”}

5.获取一个":"path参数(ShouldBindUri方法)

package main

import (
	"fmt"
	"github.com/gin-gonic/gin"
	_ "github.com/gin-gonic/gin/binding"
)

type Person struct {
	Id string `uri:"id"`
}

func startPage(c *gin.Context) {
	var person Person
	t := c.ShouldBindUri(&person)
	if t != nil {
		fmt.Println(t)
	}

	fmt.Println(person.Id)
	c.String(200, "Success")
}
func main() {
	r := gin.Default()

	r.GET("/user/:id", startPage)
	r.Run()
}