求：如何用java实现网站站点自动登陆功能 !!!!!!!!!!!

Question

用Apache HttpClient就可以了

Answer 1

可以搞定，楼主给分！
import HTTPClient.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;
import java.io.OutputStream;public class Login {
  private HTTPConnection connection;
  private static InputStream istr = null;
  private static OutputStream ostr = null;
  private static NVPair form_data[];
  private static HTTPConnection httpCon;
  private static HTTPResponse rsp;
  private static String host;
  private static Login instance;
  private Login(){
    getConnection("www.5rg.com",80);
  }
  public static Login getInstance(){
    if(instance==null){
      instance = new Login();
    }
    return instance;
  }  public static String request(HTTPConnection connection,String pathName,String method,NVPair form_data[]) {
    try{
       httpCon = connection;
       
       if(method.toLowerCase().equals("get")){
         if(form_data!=null){
           rsp = httpCon.Get(pathName, form_data);
         }else{
           System.out.println("pathName=="+pathName);
           rsp = httpCon.Get(pathName);
         }
       } else{
         if(form_data!=null)
           rsp = httpCon.Post(pathName, form_data);
         else
           rsp = httpCon.Post(pathName);
       }
      istr = rsp.getInputStream();
      BufferedReader reader = new BufferedReader(new InputStreamReader(istr));
      String line;
      StringBuffer result = new StringBuffer();
      while ((line = reader.readLine()) != null) {
        result.append(line + System.getProperty("line.separator"));
      }
      System.out.println("result=="+result.toString());
      return result.toString();
    } catch(Exception e){
      System.out.println("发生异常：");
      e.printStackTrace();
    }
 return "";
  }  public void releaseConnection(){//释放连接
    if (connection != null) {
      connection.stop();
      connection = null;
    }
  }
    public HTTPClient.HTTPConnection getConnection(String hostName,int port){//取得连接
       if(connection==null){
         try{
           connection = new HTTPClient.HTTPConnection(hostName,port);
           HTTPClient.CookieModule.setCookiePolicyHandler(null);
           connection.addDefaultModule(Class.forName("HTTPClient.CookieModule"), 1);
           connection.addModule(Class.forName("HTTPClient.RedirectionModule"),2);
         }catch(Exception e){
           e.printStackTrace();
         }
       }
       return connection;
    }  public void Login(){
    NVPair[] form_data = new NVPair[2];
    //对应登陆需要的表单字段填写
    form_data[0] = new NVPair("user","blueyang");
    form_data[1] = new NVPair("pwd","12297130");
    //提交到指定登陆页面
    Login.getInstance().request(connection,"/cargo/user.asp?type=login","post",form_data);
    String result=Login.request(connection,"/member/cargo/cargo.asp?id=7234495","get",null);
    System.out.println("登陆后进入index1.asp的内容=="+result);
  }  public static void main(String[] args) {
      Login al = Login.getInstance();
     try{
       al.Login();
       
       al.releaseConnection();
    }catch(Exception e){
      e.printStackTrace();
    }
    }
}