Golang简单实现http的server端和client端

第Golang简单实现http的server端和client端log.Println("startinghttpserverathttp:localhost:1210")

log.Fatal(server.ListenAndServe())

funcsayHello(whttp.ResponseWriter,r*http.Request){

time.Sleep(1*time.Second)

w.Write([]byte("hellohello,thisishttpserver"))

启动服务器

$gorundemo/base/http/server/server.go

2025/05/3122:26:35startinghttpserverathttp:localhost:1210

使用浏览器或者命令行测试一下：

$curl-vhttp://localhost:1210/hello

*Trying::1:1210...

*Connectedtolocalhost(::1)port1210(#0)

GET/helloHTTP/1.1

Host:localhost:1210

User-Agent:curl/7.69.1

Accept:*/*

*Markbundleasnotsupportingmultiuse

HTTP/1.1200OK

Date:Mon,31May202514:28:28GMT

Content-Length:31

Content-Type:text/plain;charset=utf-8

*Connection#0tohostlocalhostleftintact

hellohello,thisishttpserver

如上所示：这就是我们服务端返回的内容hellohello,thisishttpserver

http客户端

为什么需要客户端

在多项目、微服务的场景下，项目服务之间的互相通信并不像。使用浏览器、命令行输入域名返回结果。所以需要自己编写发起http请求的客户端，实现项目服务之间的通信

packagemain

import(

"fmt"

"io/ioutil"

"net"

"net/http"

"time"

funcmain(){

//创建连击池

transport:=http.Transport{

DialContext:(net.Dialer{

Timeout:30*time.Second,

KeepAlive:30*time.Second,

}).DialContext,

MaxIdleConns:100,//最大空闲连接数

IdleConnTimeout:90*time.Second,//空闲超时时间

TLSHandshakeTimeout:10*time.Second,//tls握手超时时间

ExpectContinueTimeout:1*time.Second,//100-continue状态码超时时间

//创建客户端

client:=http.Client{

Transport:transport,

Timeout:30*time.Second,//没饿

//请求数据

resp,err:=client.Get("http://localhost:1210/hello")

iferr!=nil{

panic(err)

deferresp.Body.Close()

//读取数据

bds,err:=ioutil.ReadAll(resp.Body)

iferr!=nil{

panic(err)

fmt.Println(string(bds))