ChatOnline(Socket编程)

Server:

package org.hjw.server;

import java.io.IOException;

import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;

public class Server {

    public static ArrayList<Socket> socketList = new ArrayList<Socket>();

    public static void main(String[] args) throws IOException {

        ServerSocket ss = new ServerSocket(30000);
        int i=0;
        while (true) {
            Socket s = ss.accept();
            socketList.add(s);
            System.out.println("线程:"+i+++"正在运行.");
            new Thread(new ServerThread(s)).start();

        }
    }
}

Client:

package org.hjw.chatonline;

import java.io.IOException;
import java.io.InputStream;

import java.net.Socket;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity {

    EditText nickname;
    EditText input;
    Button send;
    TextView show;

    Handler handler;

    ClientThread clientThread;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        nickname = (EditText) findViewById(R.id.nickname);
        input = (EditText) findViewById(R.id.input);
        send = (Button) findViewById(R.id.send);
        show = (TextView) findViewById(R.id.show);
        handler = new Handler() {;
            @Override
            public void handleMessage(Message msg) {
                if (msg.what == 0x123) {

                    show.append("
" + msg.obj.toString());

                }
            }
        };
        clientThread = new ClientThread(handler);
        new Thread(clientThread).start();
        send.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                try {
                    Message msg = new Message();
                    msg.what = 0x345;
                    msg.obj = nickname.getText().toString() + ":"
                            + input.getText().toString();
                    clientThread.revHandler.sendMessage(msg);
                    input.setText("");
                } catch (Exception e) {

                }
            }
        });

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

ps:1.Client指定IP地址和端口后，建立与Server网络连接，通过Socket建立通信.

　　2.Client里有两个Handler ，分别处理服务器传来的消息,回显消息,以及接收UI线程传入的消息，将消息发到服务器.

　　3.完成了C/S结构的聊天室。