用httpclient模拟浏览器，登录新浪微博

用httpclient模拟浏览器，登录新浪微博

①用Fiddler2追踪登录时的post请求，发现需要以下参数：

check

uname

backURL

autoLogin

pwd

其中，backURL="/"，check=“1”，autoLogin可默认为1

于是，只剩 uname和 pwd

②创建一个HttpClient

private  DefaultHttpClient httpclient  =   new  DefaultHttpClient();

③创建一个 HttpPost

HttpPost httpost  =   new  HttpPost(CommonConst.loginUrl);

④伪装httpost，骗过服务器

     /**
     * pretend to be a browser quietly
      */
     private   void  setPostHeader(HttpPost post) {
        post.setHeader(CommonConst.UserAgent, CommonConst.HttpAgent);
        post.setHeader( " Origin " , CommonConst.weiboUrl);
        post.setHeader( " Cache-Control " ,  " max-age=0 " );
        post.setHeader( " Accept " ,
                 " text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 " );
        post.setHeader( " Accept-Encoding " ,  " gzip,deflate,sdch " );
        post.setHeader( " Accept-Language " ,  " en-US,en;q=0.8 " );
        post.setHeader( " Accept-Charset " ,  " ISO-8859-1,utf-8;q=0.7,*;q=0.3 " );
        post.setHeader( " Accept-Encoding " ,  " gzip,deflate,sdch " );
        post.setHeader( " Referer " , CommonConst.loginUrl);
    }

 ⑤创建NameValuePair

List < BasicNameValuePair >  nvps  =   new  ArrayList < BasicNameValuePair > ();
        nvps.add( new  BasicNameValuePair( " check " ,  this .check));
        nvps.add( new  BasicNameValuePair( " uname " ,  this .uname));
        nvps.add( new  BasicNameValuePair( " backURL " ,  this .backURL));
        nvps.add( new  BasicNameValuePair( " autoLogin " ,  this .autoLogin));
        nvps.add( new  BasicNameValuePair( " pwd " ,  this .pwd));

⑥用setEntity方法，给httpost设置相关参数

httpost.setEntity( new  UrlEncodedFormEntity(nvps, HTTP.UTF_8));

⑦向相应的host上提交post请求

HttpHost targetHost  =   new  HttpHost(CommonConst.host);
            response  =  httpclient.execute(targetHost, httpost);

login代码：

private   boolean  login() {
         //  httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,proxy);
        HttpPost httpost  =   new  HttpPost(CommonConst.loginUrl);
        setPostHeader(httpost);
         //  All the parameters post to the web site
        List < BasicNameValuePair >  nvps  =   new  ArrayList < BasicNameValuePair > ();
        nvps.add( new  BasicNameValuePair( " check " ,  this .check));
        nvps.add( new  BasicNameValuePair( " uname " ,  this .uname));
        nvps.add( new  BasicNameValuePair( " backURL " ,  this .backURL));
        nvps.add( new  BasicNameValuePair( " autoLogin " ,  this .autoLogin));
        nvps.add( new  BasicNameValuePair( " pwd " ,  this .pwd));

         try  {
            httpost.setEntity( new  UrlEncodedFormEntity(nvps, HTTP.UTF_8));
            HttpHost targetHost  =   new  HttpHost(CommonConst.host);
            response  =  httpclient.execute(targetHost, httpost);
        }  catch  (Exception e) {
            e.printStackTrace();
             return   false ;
        }  finally  {
            httpost.abort();
        }
         return   true ;
    }

附CommonConst.java

package  com.yinger;

public   class  CommonConst {
     public   static  String HttpAgent  =   " Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_4) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.46 Safari/536.5 " ;
     public   static  String loginUrl  =   " http://m.weibo.cn/login " ;
     public   static  String host  =   " m.weibo.cn " ;
     public   static  String weiboUrl  =   " http://m.weibo.cn " ;
     public   static  String UserAgent  =   " User-Agent " ;
}