import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
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 client extends MIDlet implements CommandListener{
private DataOutputStream dos=null; //字节输出流
private DataInputStream dis=null; //字节输入流
private SocketConnection sc=null; //Scoket连接对象
private String msg=null;
private TextField tf_msg=new TextField("输入聊天信息", "", 255,TextField.ANY);
private TextField tf_name=new TextField("输入昵称", "", 10,TextField.ANY);
private Command cmdSend=new Command("send",Command.OK,1);
private Command cmdlogin=new Command("login",Command.OK,1);
private Command cmdreturn=new Command("return",Command.BACK,1);
private Command cmdexit=new Command("exit",Command.EXIT,1);
private Form f_login=new Form("聊天室登陆");
private Form f_chat=new Form("聊天室客户端");
private Display disp;
//private String username;
boolean isrec=false;
public client() {
// TODO Auto-generated constructor stub
}
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
// TODO Auto-generated method stub
// close();
}
protected void pauseApp() {
// TODO Auto-generated method stub
}
protected void startApp() throws MIDletStateChangeException {
// 创建窗体,并设置监听器
disp=Display.getDisplay(this);
disp.setCurrent(f_login);
f_login.append(tf_name);
f_login.addCommand(cmdlogin);
f_login.addCommand(cmdexit);
f_login.setCommandListener(this);
f_chat.append(tf_msg);
f_chat.addCommand(cmdSend);
f_chat.addCommand(cmdreturn);
f_chat.setCommandListener(this);
}
public void commandAction(Command c, Displayable d) {
// TODO Auto-generated method stub
if(c.equals(cmdSend))
{
try {
dos.writeUTF(tf_msg.getString());
//dos.flush();
tf_msg.setString(null);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally
{close();}
}
else if(c.equals(cmdlogin))
{
new Thread(new chatThread()).start(); //新建一个聊天线程
disp.setCurrent(f_chat);
}
else if(c.equals(cmdreturn))
{
close();
disp.setCurrent(f_login);
}
else if(c.equals(cmdexit))
{
this.notifyDestroyed();
}
}
public void close()
{ try {
sc.close();
dos.close();
dis.close();
isrec=false;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}}
class chatThread implements Runnable
{
public void run() {
// TODO Auto-generated method stub
try {
sc=(SocketConnection)Connector.open("socket://127.0.0.1:9999"); //必须对Connector生成的连接对象进行塑性
f_login.append("本地:"+sc.getLocalAddress()); //打印本机地址
f_login.append("服务器地址:"+sc.getAddress()); //打印对端地址
dos=sc.openDataOutputStream(); //从连接对象获得输出流
dos.writeUTF(tf_name.getString()); //向服务端发送客户名
dis=sc.openDataInputStream(); //从连接对象获得输入流
f_chat.append(dis.readUTF()); //获取服务器的信息
isrec=true; //设监听状态为开
while(isrec)
{
msg=dis.readUTF();
f_chat.append(msg); //接收并显示服务器的信息
}
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally
{close(); } //最后必须关闭所有流对象,释放资源
}
}
}