简单的HttpClient使用

Httpclient用途很广泛，用来处理各种http请求，这里举个简单的例子

去查询ＱＱ邮件登陆账号检测是的verifycode,一直想怎么能够代码登陆

QQ邮箱，但是ＱＱ的登陆机制做的太ＴＭＤ牛逼了，验证码一关还没

找到办法过去。

 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.List;

 import org.apache.http.HttpEntity;
 import org.apache.http.HttpResponse;
 import org.apache.http.NameValuePair;
 import org.apache.http.ParseException;
 import org.apache.http.client.ClientProtocolException;
 import org.apache.http.client.HttpClient;
 import org.apache.http.client.entity.UrlEncodedFormEntity;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.client.methods.HttpPost;
 import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.message.BasicNameValuePair;
 import org.apache.http.util.EntityUtils;

 public class ＨttpProcess{

     private static HttpClient httpclient = new DefaultHttpClient();
     public static void main(String[] args) {

         List<NameValuePair> params = new ArrayList<NameValuePair>();
         params.add(new BasicNameValuePair("uin", "[e-mail]"));
         params.add(new BasicNameValuePair("appid", "522005705"));
         params.add(new BasicNameValuePair("ptlang", "2052"));
         params.add(new BasicNameValuePair("js_type", "2"));
         params.add(new BasicNameValuePair("js_ver", "10009"));
         String r =  String.valueOf(Math.random());
         params.add(new BasicNameValuePair("r", r));
         String url = "https://ssl.ptlogin2.qq.com/check";

         String body = post(url, params);
         System.out.println(body);
     }

     /**
      * Get请求
      */
     @SuppressWarnings("deprecation")
     public static String get(String url, List<NameValuePair> params) {
         String body = null;
         try {
             // Get请求
             HttpGet httpget = new HttpGet(url);
             // 设置参数
             String str = EntityUtils.toString(new UrlEncodedFormEntity(params));
             httpget.setURI(new URI(httpget.getURI().toString() + "?" + str));
             // 发送请求
             HttpResponse httpresponse = httpclient.execute(httpget);
             // 获取返回数据
             HttpEntity entity = httpresponse.getEntity();
             body = EntityUtils.toString(entity);
             if (entity != null) {
                 entity.consumeContent();
             }
         } catch (ParseException e) {
             e.printStackTrace();
         } catch (UnsupportedEncodingException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         } catch (URISyntaxException e) {
             e.printStackTrace();
         }
         return body;
     }

     /**
      *  Post请求
      */
     @SuppressWarnings("deprecation")
     public static String post(String url, List<NameValuePair> params) {
         String body = null;
         try {
             // Post请求
             HttpPost httppost = new HttpPost(url);
             // 设置参数
             httppost.setEntity(new UrlEncodedFormEntity(params));
             // 发送请求
             HttpResponse httpresponse = httpclient.execute(httppost);
             // 获取返回数据
             HttpEntity entity = httpresponse.getEntity();
             body = EntityUtils.toString(entity);
             if (entity != null) {
                 entity.consumeContent();
             }
         } catch (UnsupportedEncodingException e) {
             e.printStackTrace();
         } catch (ClientProtocolException e) {
             e.printStackTrace();
         } catch (ParseException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
         return body;
     }

 }