第十章_网络编程，35_网络编程_http服务器

使用HTTP写一个web服务器，浏览器访问时显示hello go，打印客户端发送的请求包(结构体)。

源代码

package main

import (
	"fmt"
	"net/http"
)

//w，给客户端回复数据
//req，读取客户端发送的数据
func HandleConn(w http.ResponseWriter, req *http.Request) {
    
    
	fmt.Println("req.Method = ", req.Method)         //请求方法
	fmt.Println("req.URL = ", req.URL)               //请求的地址
	fmt.Println("req.Header = ", req.Header)         //头部信息，map键值对
	fmt.Println("req.Body = ", req.Body)             //空
	fmt.Println("req.RemoteAddr = ", req.RemoteAddr) //客户端IP和端口

	w.Write([]byte("hello go"))
}

func main() {
    
    
	//注册处理函数，用户连接时，自动调用指定的处理函数
	http.HandleFunc("/go.html", HandleConn)

	//监听绑定
	http.ListenAndServe(":8000", nil)
}

打印输出

浏览器访问http://127.0.0.1:8000/go.html

req.Method =  GET
req.URL =  /go.html
req.Header =  map[Accept:[text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/ /*;q=0.8,application/signed-exchange;v=b3;q=0.9] Accept-Encoding:[gzip, deflate, br] Accept-Language:[zh-CN,zh;q=0.9] Cache-Control:[max-age=0] Connection:[keep-alive] Sec-Ch-Ua:["Google Chrome";v="89", "Chromium";v="89", ";Not A Brand";v="99"] Sec-Ch-Ua-Mobile:[?0] Sec-Fetch-Dest:[document] Sec-Fetch-Mode:[navigate] Sec-Fetch-Site:[none] Sec-Fetch-User:[?1] Upgrade-Insecure-Requests:[1] User-Agent:[Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36]]
req.Body =  {}
req.RemoteAddr =  127.0.0.1:15553