在java web项目中使用 HttpClient模拟浏览器

package com.artsoft.demo;import java.io.FileOutputStream;  import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.CookieStore; 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.impl.conn.PoolingClientConnectionManager; import org.apache.http.util.EntityUtils;    public class HttpClientDemo {       public static void main(String[] args) throws Exception   {     getResoucesByLoginCookies();   }       private static void getResoucesByLoginCookies() throws Exception   {     HttpClientDemo demo = new HttpClientDemo();     String username = "......";// 登录用户     String password = "......";// 登录密码      // 需要提交登录的信息     String urlLogin = "http://hx.buscoming.cn/Api/Security/Logon?UserCode=" + username + "&Password=" + password;      // 登录成功后想要访问的页面 可以是下载资源 需要替换成自己的iteye Blog地址     String urlAfter = "http://hx.buscoming.cn/Api/Security/GetLoginAccount";     DefaultHttpClient client = new DefaultHttpClient(new PoolingClientConnectionManager());           HttpPost post = new HttpPost(urlLogin);     HttpResponse response = client.execute(post);     HttpEntity entity = response.getEntity();     CookieStore cookieStore = client.getCookieStore();     client.setCookieStore(cookieStore);           HttpGet get = new HttpGet(urlAfter);     response = client.execute(get);     entity = response.getEntity();            String pathName = "d:\\index.html";     writeHTMLtoFile(entity, pathName);   }       public static void writeHTMLtoFile(HttpEntity entity, String pathName) throws Exception   {      byte[] bytes = new byte[(int) entity.getContentLength()];      FileOutputStream fos = new FileOutputStream(pathName);      bytes = EntityUtils.toByteArray(entity);      fos.write(bytes);      fos.flush();      fos.close();   }  }