java 作为客户端发送http post请求登录网站首页。

package action; import com.opensymphony.xwork2.interceptor.ExceptionHolder; import org.apache.http.*; 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.cookie.Cookie; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import org.apache.log4j.Logger; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.List; public class UserAction { private Logger logger = Logger.getLogger(this.getClass()); private String signin_email; private String signin_password; public String getSignin_email() { return signin_email; } public void setSignin_email(String signin_email) { this.signin_email = signin_email; } public String getSignin_password() { return signin_password; } public void setSignin_password(String signin_password) { this.signin_password = signin_password; } //用户登录 public String signin() { try { DefaultHttpClient httpclient = new DefaultHttpClient(); HttpGet httpget = new HttpGet("http://meiwei.me/signin"); HttpResponse response = httpclient.execute(httpget); HttpEntity entity = response.getEntity(); System.out.println("Login form get: " + response.getStatusLine()); EntityUtils.consume(entity); System.out.println("Initial set of cookies:"); List<Cookie> cookies = httpclient.getCookieStore().getCookies(); if (cookies.isEmpty()) { System.out.println("None"); } else { for (int i = 0; i < cookies.size(); i++) { System.out.println("- " + cookies.get(i).toString()); } } HttpPost httppost = new HttpPost("http://meiwei.me/signin"); //用户登录 List<NameValuePair> nvps = new ArrayList<NameValuePair>(); nvps.add(new BasicNameValuePair("signin_email", getSignin_email())); nvps.add(new BasicNameValuePair("signin_password", getSignin_password())); httppost.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); response = httpclient.execute(httppost); entity = response.getEntity(); System.out.println("Login form get: " + response.getStatusLine()); EntityUtils.consume(entity); System.out.println("Post logon cookies:"); cookies = httpclient.getCookieStore().getCookies(); if (cookies.isEmpty()) { System.out.println("None"); } else { for (int i = 0; i < cookies.size(); i++) { System.out.println("- " + cookies.get(i).toString()); } } /*String sessionID = response.getFirstHeader("Set-Cookie").getValue(); httppost.addHeader("Cookie", sessionID); new DefaultHttpClient().execute(httppost);*/ //绑定session 其实ClientCookie可以重新获得cookie属性 String url = ""; //登录后页面跳转 Header locationHeader = response.getFirstHeader("Location"); System.out.println(locationHeader.getValue()); if (locationHeader != null) { url = locationHeader.getValue(); // 得到跳转href HttpGet httpget1 = new HttpGet("http://meiwei.me" + url); response = httpclient.execute(httpget1); // 登陆成功 } entity = response.getEntity(); System.out.println(response.getStatusLine()); if (entity != null) { System.out.println("Response content length: " + entity.getContentLength()); } // 显示结果 BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent(), "UTF-8")); String line = null; while ((line = reader.readLine()) != null) { System.out.println(line); } HttpGet httpget1 = new HttpGet("http://meiwei.me/setting"); //设置个人信息页面 response = httpclient.execute(httpget1); entity = response.getEntity(); System.out.println(response.getStatusLine()); if (entity != null) { System.out.println("Response content length: " + entity.getContentLength()); } // 显示结果 reader = new BufferedReader(new InputStreamReader(entity.getContent(), "UTF-8")); line = null; while ((line = reader.readLine()) != null) { System.out.println(line); } return "tologinsuccess"; } catch (RuntimeException e) { ExceptionHolder exceptionHolder = new ExceptionHolder(e); logger.error(exceptionHolder.getExceptionStack()); } catch (Exception e) { ExceptionHolder exceptionHolder = new ExceptionHolder(e); logger.error(exceptionHolder.getExceptionStack()); } return "toerror"; } }