Android之socket服务端

首先在确保服务端与客户端是相通的，ping不通肯定连不上。

TCP服务端代码

package com.example.tcp_server;

import java.io.DataInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import android.annotation.SuppressLint;
import android.os.Handler;
import android.os.Message;
import android.os.StrictMode;
import android.util.Log;

@SuppressLint("NewApi")
public class tcpservice implements Runnable
{
    //服务器端口
    private static final int SERVERPORT = 2001;
    //存储所有客户端Socket连接对象
    private static List<Socket> mClientList = new ArrayList<Socket>();
    //线程池
    private ExecutorService mExecutorService;
    //ServerSocket对象
    private ServerSocket mServerSocket;
    private static PrintWriter mPrintWriter;
    private static String  mStrMSG;
    public tcpservice()
    {
        try
        {
            StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder().detectDiskReads().detectDiskWrites().detectNetwork().penaltyLog().build());
            StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder().detectLeakedSqlLiteObjects().detectLeakedClosableObjects().penaltyLog().penaltyDeath().build());
            //设置服务器端口
            mServerSocket = new ServerSocket(SERVERPORT);
            //创建一个线程池
            mExecutorService = Executors.newCachedThreadPool();
            Log.e("tcpservice", "start...");
            //用来临时保存客户端连接的Socket对象
            new Thread(tcpservice.this).start();

        }
        catch (IOException e)
        {
            Log.e("tcpservice", e.toString());
            e.printStackTrace();
        }
    }
  //接收线程发送过来信息，并用TextView显示
    public static Handler mHandler = new Handler() {
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            Log.e("服务器说:", mStrMSG);
            MainActivity.AppendText("服务器说："+mStrMSG);
        }
    };
    //每个客户端单独开启一个线程
    static class ThreadServer implements Runnable
    {
        private Socket            mSocket;
        private DataInputStream dinput;
        public ThreadServer(Socket socket) throws IOException
        {
            this.mSocket = socket;
            dinput=new DataInputStream(socket.getInputStream());
            SendToClient("hello,tcp server...");
        }
        public void run()
        {
            try
            {
                byte[] bbuf = new byte[10000];
                while (true) {

                    if (!mSocket.isClosed()) {
                        if (mSocket.isConnected()) {
                            if (!mSocket.isInputShutdown()) {
                                int length = dinput.read(bbuf);
                                   mStrMSG = new String(bbuf, 0, length, "gb2312");
                                   mStrMSG += "\n";
                                   mHandler.sendMessage(mHandler.obtainMessage());
                            }
                        }
                    }
                }
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }
    }
    public static  void SendToClient(String msg){
        try{
            for (Socket client : mClientList)
            {
                mPrintWriter = new PrintWriter(client.getOutputStream(), true);
                mPrintWriter.println(msg);
            }
        }
        catch(Exception e){
            Log.e("向客户端发送消息败了", e.toString());
        }
    }
    public void run() {
        try{
            Socket client = null;
            while (true)
            {
                Log.e("tcpservice", "接收客户连接");
                //接收客户连接并添加到list中
                client = mServerSocket.accept();
                mClientList.add(client);
                //开启一个客户端线程
                mExecutorService.execute(new ThreadServer(client));
            }
        }
        catch(Exception e){
            Log.e("监听客户端", e.toString());
        }
    }
}

tcpservice

前端

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:orientation="vertical" >

     <EditText
 android:id="@+id/myinternet_tcpclient_EditText01"
         android:layout_width="fill_parent"
         android:layout_height="200px"
         android:text="聊天记录：\n" >
     </EditText>

     <EditText
 android:id="@+id/myinternet_tcpclient_EditText02"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text="输入要发送的内容" >
     </EditText>

     <LinearLayout
 android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:orientation="horizontal"
         android:gravity="center" >

         <Button
 android:id="@+id/myinternet_tcpclient_BtnSend"
             android:layout_width="400px"
             android:layout_height="wrap_content"
             android:text="发送" />
     </LinearLayout>

 </LinearLayout>

后台

package com.example.tcp_server;

import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {

    // 声明对象
    private Button  mSendButton;
    private static EditText mEditText01;
    private static  EditText mEditText02;
    private static String TAG = "shit=";
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //启动服务器
        new  tcpservice();
        mSendButton = (Button) findViewById(R.id.myinternet_tcpclient_BtnSend);
        mEditText01 = (EditText) findViewById(R.id.myinternet_tcpclient_EditText01);
        mEditText02 = (EditText) findViewById(R.id.myinternet_tcpclient_EditText02);
        //发送按扭注册事件
        mSendButton.setOnClickListener(new OnClickListener()
        {
            public void onClick(View v)
            {
                try
                {
                    // 取得编辑框中我们输入的内容
                    String str = mEditText02.getText().toString() + "\n";
                    mEditText01.append("我说："+str);
                    //向客户端发消息
                    tcpservice.SendToClient(str);

                } catch (Exception e)
                {
                    Log.e(TAG, e.toString());
                }
            }
        });
    }
    public static void AppendText(String msg){
        mEditText01.append(msg);
    }
}

MainActivity