本地服务器和客户端之间的通信

Question

本帖最后由 neal1991 于 2013-05-14 13:51:41 编辑

Answer 1

客户端
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.io.*;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.*;
import javax.swing.border.Border;/**
 *
 * @author Administrator
 */
public class Client extends JFrame implements Runnable
{
    private Socket server=null;
    private JLabel l1=new JLabel("明文");
    private JLabel l2=new JLabel("密文");
    private JTextField T=new JTextField(20);
    private JTextArea TA1=new JTextArea();//显示明文
    private JTextArea TA2=new JTextArea();//显示密文
    private JButton B=new JButton("发送");//发送信息
    private JPanel p1=new JPanel();
    private PrintWriter pp=null;
    private BufferedReader bb=null;
    private JPanel p2=new JPanel();
    private String message=null;
    private JScrollPane JS1=new JScrollPane(TA1);
    private JScrollPane JS2=new JScrollPane(TA2);
    private Key key=Cry.getKey("123456");
    int port;
    public Client(int port) throws UnknownHostException, IOException, NoSuchAlgorithmException
    {
        this.setTitle("客户端");
        this.setLocation(200, 200);
        this.setSize(300, 300);
        init();
        this.port=port;
        this.setVisible(true);
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
    }
    public void init()
    {
           this.setLayout(new BorderLayout(3,3));
           this.setBackground(Color.red);
           p1.setLayout(new GridLayout(2,1));
           JS2.setBorder(BorderFactory.createTitledBorder("密文区"));          
           p1.add(JS2);
           JS1.setBorder(BorderFactory.createTitledBorder("明文区"));          
           p1.add(JS1);
           this.add(p1,"Center");
           p2.setLayout(new GridLayout(1,2));
           p2.add(T);
           B.addActionListener(new ActionListener()
           {
               public void actionPerformed(ActionEvent e) 
               {
                    if(T.getText().trim().equals("")||T.getText().trim()==null)
                    {
                         JOptionPane.showMessageDialog(null, "不能为空！");
                         T.requestFocus();
                    }
                    else{
                        pp.println(Cry.enCry(T.getText(),key));
                        pp.flush();
                        TA1.append("Client:"+T.getText()+"\n");
                        TA2.append("Client:"+Cry.enCry(T.getText(),key)+"\n");
                        T.setText("");
                    }               }           });
           p2.add(B);
           this.add(p2,"South");    }
  
    private void getConnection(int port) {        try {
            server = new Socket("localhost",port);
            pp=new PrintWriter(new OutputStreamWriter(server.getOutputStream()));
            bb=new BufferedReader(new InputStreamReader(server.getInputStream()));
            System.out.println("OOK");
            communicate();
            this.close();
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(null, ex.getMessage());
        }
    }
    private void close() throws IOException{
           pp.close();
           bb.close();
           server.close();
    }    private void communicate() throws IOException{
          do{
            try {
                message = bb.readLine();
                TA1.append("Server:"+Cry.deCry(message, key)+"\n");
                TA2.append("Server:"+message+"\n");
            } catch (IOException ex) {
               
            }
              
          } while(!message.equals("bye"));
       
    }    public void run() 
    {
            getConnection(port);
   }}

Answer 2

首先我这个登录都登陆不上去，我在电脑上测试了我的mysql的JDBC是可以连接的，不知道问题出现在哪，求高手解答