多次访问某地址(刷刷点击率)

 

/** *//**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2008</p>
 * <p>Company: Geong</p>
 * @author Will he
 * @date 2008-4-29
 * @version 1.0
 */
package thinkingInJava;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class AccessWebSite extends JFrame...{
     JPanel p1;
     JTextField txtContent;
     JButton btnOK;
     JFileChooser fc;
     JLabel lblInformation;
     JTextField txtCount;
     int AccessCount=0;//计数器
     int defaultCount =50;
     public AccessWebSite()...{
      p1=new JPanel();
      p1.setBackground(Color.ORANGE);
      txtContent=new JTextField("请输入访问的路径...",22);
      txtCount = new JTextField("请输入访问次数",8);
      btnOK=new JButton("确定");
      btnOK.setEnabled(false);//为避免出错，默认确定按钮不可用
      lblInformation=new JLabel("说明：本软件仅完成指定网络地址的访问");
      lblInformation.setForeground(Color.blue);
      lblInformation.setAutoscrolls(true);
      
      p1.add(txtContent);
      p1.add(txtCount);
      p1.add(btnOK);
      p1.add(lblInformation);
      //对文本框的鼠标监听  
      txtContent.addMouseListener(new MouseListener()...{
       public void mouseReleased(MouseEvent e)...{}
       public void mousePressed(MouseEvent e)...{}
       
       //当鼠标移出时，如果文本框为空，则让确定按钮不可用
       public void mouseExited(MouseEvent e)...{
        if(txtContent.getText().equals("")||txtCount.getText().equals(""))...{
         btnOK.setEnabled(false);
        }else...{
         btnOK.setEnabled(true);
        }
       }
       public void mouseEntered(MouseEvent e)...{}
       //单击鼠标的时候，如果文本框里为提示的文字，则清空文本框
       public void mouseClicked(MouseEvent e)...{
        if(txtContent.getText().equals("请输入访问的路径..."))...{
         txtContent.setText("HTTP://");
        }
        if(txtCount.getText().equals("请输入访问次数"))...{
         txtCount.setText(String.valueOf(defaultCount));
         
        }
       }
      }
      );
      
      //对文本框的按键监听
      txtContent.addKeyListener(new KeyListener()...{
       public void keyTyped(KeyEvent e)...{
       }
       
       public void keyReleased(KeyEvent e)...{
       }
       
       public void keyPressed(KeyEvent e)...{
        if(txtContent.getText().equals(""))...{
         btnOK.setEnabled(false);
        }else...{
         btnOK.setEnabled(true);
        }
       }
      }
      );  
      
      //对确定按钮的监听
      btnOK.addActionListener(new ActionListener()...{
       
       AccessThread t;
       public void actionPerformed(ActionEvent e)...{
        
        int count = Integer.parseInt(txtCount.getText().toString());
        
        String path=txtContent.getText().toString();
        
        AccessCount=0;//初始化访问计数器
        t=new AccessThread(path,count);
        t.start();    
       }
       
       class AccessThread extends Thread...{
        
        String tmppath;
        int tmpcount=0;
        public AccessThread(String path,int count)...{
         this.tmppath=path;
         this.tmpcount =count;
        }
        
        public void run()...{
         try...{ 
          
          URL url = new URL(tmppath);  
          for(int i=0;i<tmpcount;i++ )...{
              /**//*使当前执行线程休眠(临时停止执行)指定的毫秒数*/
          this.sleep(100);
           
           URLConnection urlcon =  url.openConnection();
           InputStream IS= urlcon.getInputStream();
           IS.close(); 
           AccessCount++;
          }  
          lblInformation.setText("共访问了此地址"+AccessCount+"次");
         }catch(Exception ex)...{
          System.out.println(ex);   
         }finally...{
          this.stop();
         }
        }
        
       }
      }
      );
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      this.getContentPane().add(p1);
      this.setTitle("访问网站");
      this.setResizable(false);
      this.setSize(500,100);
      
      this.setLocation(300,200);
      this.setVisible(true);
     }
     
     public static void main(String[] args)...{
      new AccessWebSite();
     }
}