Go语言Web编程实现Get和Post请求发送与解析的方法详解
本文实例讲述了Go语言Web编程实现Get和Post请求发送与解析的方法。分享给大家供大家参考,具体如下:
这是一篇入门文章,通过一个简单的例子介绍Golang的Web编程主要用到的技术。
文章结构包括:
1.Client-Get请求
2.Client-Post请求
3.Server处理Get和Post数据
在数据的封装中,我们部分采用了json,因而本文也涉及到Golang中json的编码和解码。
一、Client-Get
packagemain import( "fmt" "net/url" "net/http" "io/ioutil" "log" ) funcmain(){ u,_:=url.Parse("http://localhost:9001/xiaoyue") q:=u.Query() q.Set("username","user") q.Set("password","passwd") u.RawQuery=q.Encode() res,err:=http.Get(u.String()); iferr!=nil{ log.Fatal(err)return } result,err:=ioutil.ReadAll(res.Body) res.Body.Close() iferr!=nil{ log.Fatal(err)return } fmt.Printf("%s",result) }
二、Client-Post
packagemain import( "fmt" "net/url" "net/http" "io/ioutil" "log" "bytes" "encoding/json" ) typeServerstruct{ ServerNamestring ServerIP string } typeServerslicestruct{ Servers[]Server ServersID string } funcmain(){ varsServerslice varnewServerServer; newServer.ServerName="Guangzhou_VPN"; newServer.ServerIP="127.0.0.1" s.Servers=append(s.Servers,newServer) s.Servers=append(s.Servers,Server{ServerName:"Shanghai_VPN",ServerIP:"127.0.0.2"}) s.Servers=append(s.Servers,Server{ServerName:"Beijing_VPN",ServerIP:"127.0.0.3"}) s.ServersID="team1" b,err:=json.Marshal(s) iferr!=nil{ fmt.Println("jsonerr:",err) } body:=bytes.NewBuffer([]byte(b)) res,err:=http.Post("http://localhost:9001/xiaoyue","application/json;charset=utf-8",body) iferr!=nil{ log.Fatal(err) return } result,err:=ioutil.ReadAll(res.Body) res.Body.Close() iferr!=nil{ log.Fatal(err) return } fmt.Printf("%s",result) }
三、Server
packagemain import( "fmt" "net/http" "strings" "html" "io/ioutil" "encoding/json" ) typeServerstruct{ ServerNamestring ServerIP string } typeServerslicestruct{ Servers[]Server ServersID string } funcmain(){ http.HandleFunc("/",handler) http.ListenAndServe(":9001",nil) } funchandler(whttp.ResponseWriter,r*http.Request){ r.ParseForm()//解析参数,默认是不会解析的 fmt.Fprintf(w,"Hi,Iloveyou%s",html.EscapeString(r.URL.Path[1:])) ifr.Method=="GET"{ fmt.Println("method:",r.Method)//获取请求的方法 fmt.Println("username",r.Form["username"]) fmt.Println("password",r.Form["password"]) fork,v:=ranger.Form{ fmt.Print("key:",k,";") fmt.Println("val:",strings.Join(v,"")) } }elseifr.Method=="POST"{ result,_:=ioutil.ReadAll(r.Body) r.Body.Close() fmt.Printf("%s\n",result) //未知类型的推荐处理方法 varfinterface{} json.Unmarshal(result,&f) m:=f.(map[string]interface{}) fork,v:=rangem{ switchvv:=v.(type){ casestring: fmt.Println(k,"isstring",vv) caseint: fmt.Println(k,"isint",vv) casefloat64: fmt.Println(k,"isfloat64",vv) case[]interface{}: fmt.Println(k,"isanarray:") fori,u:=rangevv{ fmt.Println(i,u) } default: fmt.Println(k,"isofatypeIdon'tknowhowtohandle") } } //结构已知,解析到结构体 varsServerslice; json.Unmarshal([]byte(result),&s) fmt.Println(s.ServersID); fori:=0;i希望本文所述对大家Go语言程序设计有所帮助。