java-IM.rar_im_java IM

package chat; import java.net.*; import java.io.*; import javax.swing.*; //import java.awt.*; import java.awt.event.*; import java.applet.*; public class ChatServer extends Applet implements Runnable{ //Container cont = this.getContentPane(); JButton buttonSendMessage = new JButton("Send Message"); JTextField textField = new JTextField(); JTextArea textArea = new JTextArea(); JScrollPane scrollPane = new JScrollPane(); ServerSocket s = null; Socket con = null; ObjectOutputStream output = null; ObjectInputStream input = null; /** * */ public void init(){ //this.setTitle("IM Server"); this.setLayout(null); textField.setBounds(20, 20, 200, 30); textArea.setBounds(20, 70, 300, 150); textArea.setEditable(false); textArea.setLineWrap(true); scrollPane.setBounds(20, 70, 300, 150); buttonSendMessage.setBounds(250, 20, 120, 30); buttonSendMessage.addActionListener(new buttonSendMessage_ActionListener()); buttonSendMessage.setEnabled(false); this.add(buttonSendMessage,null); this.add(textField,null); this.add(textArea,null); this.add(scrollPane,null); scrollPane.getViewport().add(textArea); //this.setSize(400,300); //this.setVisible(true); new Thread(this).start(); } public void run(){ try{ s = new ServerSocket(8000); textArea.insert("服务器启动成功!\n",textArea.getText().length()); textArea.insert("等待应答...\n",textArea.getText().length()); //线程中断，监听客户端应答 con = s.accept(); textArea.insert("连接成功!\n",textArea.getText().length()); buttonSendMessage.setEnabled(true); output = new ObjectOutputStream(con.getOutputStream()); input = new ObjectInputStream(con.getInputStream()); output.writeObject("<Server said:>\n"); output.flush(); output.writeObject("Hello!\n"); output.flush(); String msg = (String)input.readObject(); while(!msg.equals("quit")){ textArea.insert(msg,textArea.getText().length()); textArea.moveCaretPosition(textArea.getText().length()); msg = (String)input.readObject(); } output.close(); input.close(); con.close(); }catch(Exception e){ System.out.println(e); } } public void SendMessage(){ String str = textField.getText(); textArea.insert("<Server said:>\n",textArea.getText().length()); textArea.insert(str+"\n",textArea.getText().length()); textField.setText(""); textArea.moveCaretPosition(textArea.getText().length()); try{ output.writeObject("<Server said:>\n"); output.flush(); output.writeObject(str+"\n"); output.flush(); }catch(Exception e){ System.out.println(e); } } class buttonSendMessage_ActionListener implements ActionListener{ public void actionPerformed(ActionEvent e){ SendMessage(); } } /* public static void main(String args[]){ ChatServer cs = new ChatServer(); cs.connect(); } */ }