Go HTTP 小结

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可能是史上最全的golang实现HTTP客户端的总结了,再附上一个变态的的服务器代码

以下脚本总共创建了6个函数:用三种方法实现了http请求,和一个服务器监听.

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package main
import (
    "fmt"
    "strings"
    "net/http"
    "net/url"
    "io/ioutil"
)
func main(){
    uri := "http://localhost:8089/?hello=world"
    mime := "application/x-www-form-urlencoded"
    params := url.Values{"name": {"xiie"}, "from": {"wuhan"}}
    get_content := httpGet(uri)
    client_get := clientGet(uri)
    post_content := httpPost(uri,mime,params.Encode())
    client_post := clientPost(uri,mime,params.Encode())
    form_content := postForm(uri,params)
    fmt.Println(get_content)
    fmt.Println(client_get)
    fmt.Println(post_content)
    fmt.Println(client_post)
    fmt.Println(form_content)
    // http_server()
}
// net/http包 GET请求
func httpGet(uri string) string{
    response,_ := http.Get(uri)
    defer response.Body.Close()
    body,_ := ioutil.ReadAll(response.Body)
    return string(body)
}
// net/http包 POST请求
func httpPost(uri string,mime string,params string) string{
    resp, err := http.Post(uri,mime,strings.NewReader(params))
    if err != nil {
        fmt.Println(err)
    }
 
    defer resp.Body.Close()
    body, err := ioutil.ReadAll(resp.Body)
    if err != nil {
        // handle error
    }
    return string(body)
}
// net/http client GET请求
func clientGet(uri string) string{
    client := &http.Client{}
    reqest, _ := http.NewRequest("GET", uri, nil)
     
    reqest.Header.Set("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
    reqest.Header.Set("Accept-Charset","GBK,utf-8;q=0.7,*;q=0.3")
    reqest.Header.Set("Accept-Encoding","gzip,deflate,sdch")
    reqest.Header.Set("Accept-Language","zh-CN,zh;q=0.8")
    reqest.Header.Set("Cache-Control","max-age=0")
    reqest.Header.Set("Connection","keep-alive")
     
    response,_ := client.Do(reqest)
    body, _ := ioutil.ReadAll(response.Body)
    defer response.Body.Close() //一定要关闭resp.Body
    return string(body)
}
// net/http client POST请求
func clientPost(uri string, mime string, params string) string{
    client := &http.Client{}
    req, _ := http.NewRequest("POST", uri, strings.NewReader(params))
    req.Header.Set("Content-Type", mime)
    resp, _ := client.Do(req)
    defer resp.Body.Close()
    data, _ := ioutil.ReadAll(resp.Body)
    return string(data)
}
// net/http PostForm POST请求
func postForm(uri string,params url.Values) string{
    resp, err := http.PostForm("http://www.01happy.com/demo/accept.php",params)
 
    if err != nil {
        // handle error
    }
 
    defer resp.Body.Close()
    body, err := ioutil.ReadAll(resp.Body)
    if err != nil {
        // handle error
    }
 
    return string(body)
}
// HTTP server
// golang服务端的效率没有node.js高,几乎是它的一半.
func http_server(){
    http.HandleFunc("/hello", func(w http.ResponseWriter, req *http.Request){//匿名函数
        w.Write([]byte("Hello,philo xiie"))
    })
    http.ListenAndServe(":8088", nil)
}