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。