第Golang簡單實現(xiàn)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"))

啟動服務(wù)器

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

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

使用瀏覽器或者命令行測試一下：

$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：這就是我們服務(wù)端返回的內(nèi)容hellohello,thisishttpserver

http客戶端

為什么需要客戶端

在多項目、微服務(wù)的場景下，項目服務(wù)之間的互相通信并不像。使用瀏覽器、命令行輸入域名返回結(jié)果。所以需要自己編寫發(fā)起http請求的客戶端，實現(xiàn)項目服務(wù)之間的通信

packagemain

import(

"fmt"

"io/ioutil"

"net"

"net/http"

"time"

funcmain(){

//創(chuàng)建連擊池

transport:=http.Transport{

DialContext:(net.Dialer{

Timeout:30*time.Second,

KeepAlive:30*time.Second,

}).DialContext,

MaxIdleConns:100,//最大空閑連接數(shù)

IdleConnTimeout:90*time.Second,//空閑超時時間

TLSHandshakeTimeout:10*time.Second,//tls握手超時時間

ExpectContinueTimeout:1*time.Second,//100-continue狀態(tài)碼超時時間

//創(chuàng)建客戶端

client:=http.Client{

Transport:transport,

Timeout:30*time.Second,//沒餓

//請求數(shù)據(jù)

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

iferr!=nil{

panic(err)

deferresp.Body.Close()

//讀取數(shù)據(jù)

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

iferr!=nil{

panic(err)

fmt.Println(string(bds))