golang curl

 /**
 1.可设置代理
 2.可设置 cookie
 3.自动保存并应用响应的 cookie
 4.自动为重新向的请求添加 cookie
 */
 package curl

 import (
     "net/http"
     "net/url"
     "io/ioutil"
     "strings"
 )

 type Browser struct {
     cookies []*http.Cookie;
     client *http.Client;
 }

 //初始化
 func NewBrowser() *Browser {
     hc := &Browser{};
     hc.client = &http.Client{};
     //为所有重定向的请求增加cookie
     hc.client.CheckRedirect = func(req *http.Request, via []*http.Request) error {
         if len(via) > 0 {
             for _,v := range hc.GetCookie() {
                 req.AddCookie(v);
             }
         }
         return nil
     }
     return hc;
 }

 //设置代理地址
 func (self *Browser) SetProxyUrl(proxyUrl string)  {
     proxy := func(_ *http.Request) (*url.URL, error) {
         return url.Parse(proxyUrl);
     };
     transport := &http.Transport{Proxy:proxy};
     self.client.Transport = transport;
 }

 //设置请求cookie
 func (self *Browser) AddCookie(cookies []*http.Cookie)  {
     self.cookies = append(self.cookies, cookies...);
 }

 //获取当前所有的cookie
 func (self *Browser) GetCookie() ([]*http.Cookie) {
     return self.cookies;
 }

 //发送Get请求
 func (self *Browser) Get(requestUrl string) ([]byte, int) {
     request,_ := http.NewRequest("GET", requestUrl, nil);
     self.setRequestCookie(request);
     response,_ := self.client.Do(request);
     defer response.Body.Close();

     data, _ := ioutil.ReadAll(response.Body)
     return data, response.StatusCode;
 }

 //发送Post请求
 func (self *Browser) Post(requestUrl string, params map[string]string) ([]byte) {
     postData := self.encodeParams(params);
     request,_ := http.NewRequest("POST", requestUrl, strings.NewReader(postData));
     request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
     self.setRequestCookie(request);

     response,_ := self.client.Do(request);
     defer response.Body.Close();

     //保存响应的 cookie
     respCks := response.Cookies();
     self.cookies = append(self.cookies, respCks...);

     data, _ := ioutil.ReadAll(response.Body)
     return data;
 }

 //为请求设置 cookie
 func (self *Browser) setRequestCookie(request *http.Request)  {
     for _,v := range self.cookies{
         request.AddCookie(v)
     }
 }

 //参数 encode
 func (self *Browser) encodeParams(params map[string]string) string {
     paramsData := url.Values{};
     for k,v := range params {
         paramsData.Set(k,v);
     }
     return paramsData.Encode();
 }