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", "1633931117@qq.com"));
        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;
    }

}