J2ME简单的聊天程序

import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.util.Vector; import javax.microedition.io.Connection; import javax.microedition.io.Connector; import javax.microedition.io.ServerSocketConnection; import javax.microedition.io.SocketConnection; import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; public class Server extends MIDlet implements CommandListener{ Display diaplay; Form form; Command command; TextField text; //联网 ServerSocketConnection server; SocketConnection socket; DataInputStream input; DataOutputStream output; private void initSever(){ diaplay = Display.getDisplay(this); form = new Form("聊天窗口"); command = new Command("发送",Command.SCREEN,1); text = new TextField("发送的内容：","",50,TextField.ANY); form.addCommand(command); form.append(text); diaplay.setCurrent(form); form.setCommandListener(this); try { server = (ServerSocketConnection)Connector.open("socket://:8888"); System.out.println("等待连接。。。。"); socket = (SocketConnection) server.acceptAndOpen();//等待客服端的连接 System.out.println("连接成功。。。。"); input = socket.openDataInputStream(); output= socket.openDataOutputStream(); new Run().start(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } class Run extends Thread{ public void run(){ while(true){ try { String inp; inp = input.readUTF(); form.append("客服端发送的数据: "+inp+"\n"); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } } protected void destroyApp(boolean arg0) throws MIDletStateChangeException { // TODO Auto-generated method stub } protected void pauseApp() { // TODO Auto-generated method stub } protected void startApp() throws MIDletStateChangeException { // TODO Auto-generated method stub initSever(); } public void commandAction(Command c, Displayable arg1) { // TODO Auto-generated method stub if(c == command){ try { output.writeUTF(text.getString()); form.append("服务器发送的： "+text.getString()+"\n"); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } }