GO URL解析

Go对URL解析具有良好的支持。 URL包含方案, 身份验证信息, 主机, 端口, 路径, 查询参数和查询片段。我们可以解析URL并推断出要传入服务器的参数是什么, 然后相应地处理请求。

net / url软件包具有必需的功能, 例如Scheme, User, Host, Path, RawQuery等。

Go URL解析示例1

package main
import "fmt"
import "net"
import "net/url"
func main() {

	p := fmt.Println

	s := "Mysql://admin:password@serverhost.com:8081/server/page1?key=value&key2=value2#X"

	u, err := url.Parse(s)
	if err != nil {
		panic(err)
	}
	p(u.Scheme)	//prints Schema of the URL
	p(u.User)	// prints the parsed user and password
	p(u.User.Username())	//prints user's name
	pass, _ := u.User.Password()
	p(pass)		//prints user password
	p(u.Host) 		//prints host and port
	host, port, _ := net.SplitHostPort(u.Host)		 //splits host name and port
	p(host)		//prints host
	p(port)		//prints port
	p(u.Path)		//prints the path
	p(u.Fragment)		//prints fragment path value
	p(u.RawQuery)		//prints query param name and value as provided
	m, _ := url.ParseQuery(u.RawQuery)		//parse query param into map
	p(m)		//prints param map
	p(m["key2"][0])		//prints specific key value
}

输出：

mysql
admin:password
admin
password
serverhost.com:8081
serverhost.com
8081
/server/page1
X
key=value&key2=value2
map[key:[value] key2:[value2]]
value2

Go URL解析示例2

package main

import (
	"io"
	"net/http"
)


func main() {
	http.HandleFunc("/company", func(res http.ResponseWriter, req *http.Request) {
		displayParameter(res, req)
	})
	println("Enter the url in browser:  http://localhost:8080/company?name=Tom&age=27")
	http.ListenAndServe(":8080", nil)
}
func displayParameter(res http.ResponseWriter, req *http.Request) {
	io.WriteString(res, "name: "+req.FormValue("name"))
	io.WriteString(res, "\nage: "+req.FormValue("age"))
}

输出：

在浏览器中输入网址：http：// localhost：8080 / company？name = Tom＆age = 27