[置顶] android socket 聊天实现与调试

网上很多基于Socket的聊天实现都是不完整的。。。

结合自己的经验给大家分享一下，完整代码可以在GitHub里获取https://github.com/zz7zz7zz/android-socket-client

1.废话不多说，附主要的Client类

package com.boyaa.push.lib.service;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketException;
import java.util.Iterator;
import java.util.concurrent.LinkedBlockingQueue;

import android.content.Context;
import android.util.Log;

import com.boyaa.push.lib.util.NetworkUtil;

/**
 *
 * @author Administrator
 *
 */
public class Client {

    private final int STATE_OPEN=1;//socket打开
    private final int STATE_CLOSE=1<<1;//socket关闭
    private final int STATE_CONNECT_START=1<<2;//开始连接server
    private final int STATE_CONNECT_SUCCESS=1<<3;//连接成功
    private final int STATE_CONNECT_FAILED=1<<4;//连接失败
    private final int STATE_CONNECT_WAIT=1<<5;//等待连接

    private String IP="192.168.1.100";
    private int PORT=60000;

    private int state=STATE_CONNECT_START;

    private Socket socket=null;
    private OutputStream outStream=null;
    private InputStream inStream=null;

    private Thread conn=null;
    private Thread send=null;
    private Thread rec=null;

    private Context context;
    private ISocketResponse respListener;
    private LinkedBlockingQueue<Packet> requestQueen=new LinkedBlockingQueue<Packet>();
    private final Object lock=new Object();

    public int send(Packet in)
    {
        requestQueen.add(in);
        synchronized (lock)
        {
            lock.notifyAll();
        }
        return in.getId();
    }

    public void cancel(int reqId)
    {
         Iterator<Packet> mIterator=requestQueen.iterator();
         while (mIterator.hasNext())
         {
             Packet packet=mIterator.next();
             if(packet.getId()==reqId)
             {
                 mIterator.remove();
             }
        }
    }

    public Client(Context context,ISocketResponse respListener)
    {
        this.context=context;
        this.respListener=respListener;
    }

    public boolean isNeedConn()
    {
        return !((state==STATE_CONNECT_SUCCESS)&&(null!=send&&send.isAlive())&&(null!=rec&&rec.isAlive()));
    }

    public void open()
    {
        reconn();
    }

    public void open(String host,int port)
    {
        this.IP=host;
        this.PORT=port;
        reconn();
    }

    private long lastConnTime=0;
    public synchronized void reconn()
    {
        if(System.currentTimeMillis()-lastConnTime<2000)
        {
            return;
        }
        lastConnTime=System.currentTimeMillis();

        close();
        state=STATE_OPEN;
        conn=new Thread(new Conn());
        conn.start();
    }

    public synchronized void close()
    {
        if(state!=STATE_CLOSE)
        {
            try {
                if(null!=socket)
                {
                    socket.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }finally{
                socket=null;
            }

            try {
                if(null!=outStream)
                {
                    outStream.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }finally{
                outStream=null;
            }

            try {
                if(null!=inStream)
                {
                    inStream.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }finally{
                inStream=null;
            }

            try {
                if(null!=conn&&conn.isAlive())
                {
                    conn.interrupt();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }finally{
                conn=null;
            }

            try {
                if(null!=send&&send.isAlive())
                {
                    send.interrupt();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }finally{
                send=null;
            }

            try {
                if(null!=rec&&rec.isAlive())
                {
                    rec.interrupt();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }finally{
                rec=null;
            }

            state=STATE_CLOSE;
        }
        requestQueen.clear();
    }

    private class Conn implements Runnable
    {
        public void run() {
            while(state!=STATE_CLOSE)
            {
                try {
                    state=STATE_CONNECT_START;
                    socket=new Socket();
                    socket.connect(new InetSocketAddress(IP, PORT), 15*1000);
                    state=STATE_CONNECT_SUCCESS;
                } catch (Exception e) {
                    e.printStackTrace();
                    state=STATE_CONNECT_FAILED;
                }

                if(state==STATE_CONNECT_SUCCESS)
                {
                    try {
                        outStream=socket.getOutputStream();
                        inStream=socket.getInputStream();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                    send=new Thread(new Send());
                    rec=new Thread(new Rec());
                    send.start();
                    rec.start();
                    break;
                }
                else
                {
                    state=STATE_CONNECT_WAIT;
                    //如果有网络没有连接上，则定时取连接，没有网络则直接退出
                    if(NetworkUtil.isNetworkAvailable(context))
                    {
                        try {
                                Thread.sleep(15*1000);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                            break;
                        }
                    }
                    else
                    {
                        break;
                    }
                }
            }
        }
    }

    private class Send implements Runnable
    {
        public void run() {
            try {
                    while(state!=STATE_CLOSE&&state==STATE_CONNECT_SUCCESS&&null!=outStream)
                    {
                                Packet item;
                                while(null!=(item=requestQueen.poll()))
                                {
                                    outStream.write(item.getPacket());
                                    outStream.flush();
                                    item=null;
                                }

                                synchronized (lock)
                                {
                                    lock.wait();
                                }
                    }
            }catch(SocketException e1)
            {
                e1.printStackTrace();//发送的时候出现异常，说明socket被关闭了(服务器关闭)java.net.SocketException: sendto failed: EPIPE (Broken pipe)
                reconn();
            }
            catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    private class Rec implements Runnable
    {
        public void run() {

            try {
                    while(state!=STATE_CLOSE&&state==STATE_CONNECT_SUCCESS&&null!=inStream)
                    {
                            byte[] bodyBytes=new byte[5];
                            int offset=0;
                            int length=5;
                            int read=0;

                            while((read=inStream.read(bodyBytes, offset, length))>0)
                            {
                                if(length-read==0)
                                {
                                    if(null!=respListener)
                                    {
                                        respListener.onSocketResponse(new String(bodyBytes));
                                    }

                                    offset=0;
                                    length=5;
                                    read=0;
                                    continue;
                                }
                                offset+=read;
                                length=5-offset;
                            }

                            reconn();//走到这一步，说明服务器socket断了
                            break;
                    }
            }
            catch(SocketException e1)
            {
                e1.printStackTrace();//客户端主动socket.close()会调用这里 java.net.SocketException: Socket closed
            }
            catch (Exception e2) {
                e2.printStackTrace();
            }

        }
    }
}

2.使用SocketTool工具进行调试

a.创建Server.点击TCP Server ,点击创建，输入端口号，点击确定(同时要点击启动监听)。

b.在android客户端输入IP和端口，点击打开或者重连,socketTool便可以看见你连上的Client了

c.在客户端输入要发送的文字，点击发送，在socketTool便可以看到你往server里发送的数据了，

在socketTool里输入要往客户端发送的内容，点击发送，便可在手机客户端里看到Server往client发送的数据了

这样就可以Client-Server之间进行数据对发了。

邮箱：zz7zz7zz@163.com

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