clientframe.java

new DataOutputStream(connectionSocket .getOutputStream())

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class ClientFrame extends JFrame implements ActionListener{
   JButton sendButton;
   JTextField inputField;
   JTextArea outputArea;
   SimpleClient client;
   JButton exitButton;
   //在构造函数中完成图形界面的初始化
   public ClientFrame(){
      JLabel label1=new JLabel("输入：");
      inputField=new JTextField(20);
      JPanel panel1=new JPanel();
      panel1.add(label1);
      panel1.add(inputField);
      
      JLabel label2=new JLabel("服务器返回：");
      outputArea=new JTextArea(6,20);
      JScrollPane scrollPane=new JScrollPane(outputArea);
      JPanel panel2=new JPanel();
      panel2.setLayout(new BorderLayout());
      panel2.add(label2,BorderLayout.NORTH);
      panel2.add(scrollPane,BorderLayout.CENTER);
      
      sendButton=new JButton("发送");
      sendButton.addActionListener(this);
      exitButton=new JButton("退出");
      exitButton.addActionListener(this);
      
      JPanel panel=new JPanel();
      panel.setLayout(new BorderLayout());
      panel.add(panel1,BorderLayout.NORTH);
      panel.add(sendButton,BorderLayout.CENTER);
      panel.add(exitButton,BorderLayout.EAST);
      panel.add(panel2,BorderLayout.PAGE_END);
      
      setTitle("Socket客户端");
      this.getContentPane().add(panel);
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   }
   public void actionPerformed(ActionEvent ae){
    //判断事件源空间是否是发送按钮
      if(ae.getSource() == sendButton){
       try{
        client.sendRequest(inputField.getText());
        
       }catch(Exception ex){
        ex.printStackTrace();
       }
       outputArea.append(client.getReponse()+"\n");
      }
      if(ae.getSource()== exitButton){
       outputArea.append("要退出了\n");
      // this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       //sendButton.hide();
      }
   }
   public static void main(String args[]){
   ClientFrame frame=new ClientFrame();
   frame.pack();
   frame.client=new SimpleClient("127.0.0.1",8888);
   frame.setVisible(true);
   }
}