Android Socket编程android端服务器和客户端的实现

Android Socket编程android端服务器和客户端的实现

其实和java实现的差不多，或本质是用java实现的，但由于android有自身的独特性，所以还是有一些要注意的点：

我这个Demo是以服务器开启，然后客户端连上服务器后就可与服务器进行交互，客户端每向服务器发送一条信息，服务器就向客户端返回相应的信息，两端都在android端实现（网上有很多客户端用android实现的，没找到服务器也在android端实现的，另外网上的服务器基本都有开始没有关闭，我这里也添加了关闭，其中涉及多线程，希望能给大家一点启发，当然不足之处还望告知，我也是初学的学生），其中客户端基本借鉴《疯狂Android讲义》。

这个Demo的功能简单但扩展性很大，以这个为核心可以扩展出很多应用或功能（例如即时聊天，微型QQ等）；

先上图：

服务器：

客户端：

服务器端代码（有注释不说了）：

package com.example.multithreadserver;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.PrintWriter;import .InetAddress;import workInterface;import .ServerSocket;import .Socket;import .SocketException;import java.util.ArrayList;import java.util.Enumeration;import java.util.List;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import android.annotation.SuppressLint;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.View;import android.view.Window;import android.widget.Button;import android.widget.TextView;/** @Author mowen* @Time /6/9*/public class MainActivity extends Activity {private static final int PORT = 9999; private List<Socket> mList = new ArrayList<Socket>();private volatile ServerSocket server=null;private ExecutorService mExecutorService = null; //线程池private String hostip;//本机IPprivate TextView mText1;private TextView mText2;private Button mBut1=null; private Handler myHandler=null;private volatile boolean flag= true;//线程标志位@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);this.requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.main);hostip = getLocalIpAddress(); //获取本机IPmText1=(TextView) findViewById(R.id.textView1);mText1.setText(hostip);mText1.setEnabled(false);mText2=(TextView) findViewById(R.id.textView2);mBut1=(Button) findViewById(R.id.but1);mBut1.setOnClickListener(new Button1ClickListener());//取得非UI线程传来的msg，以改变界面myHandler =new Handler(){@SuppressLint("HandlerLeak")public void handleMessage(Message msg){if(msg.what==0x1234){mText2.append("\n" + msg.obj.toString());}}};}//对button1的监听事件private final class Button1ClickListener implements View.OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stub//如果是“启动”，证明服务器是关闭状态，可以开启服务器if(mBut1.getText().toString().equals("启动")){System.out.println("flag:"+flag);ServerThread serverThread=new ServerThread();flag=true;serverThread.start();mBut1.setText("关闭");}else{try {flag=false;server.close();for(int p=0;p<mList.size();p++){Socket s=mList.get(p);s.close();}mExecutorService.shutdownNow();mBut1.setText("启动");System.out.println("服务器已关闭");} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}//Server端的主线程class ServerThread extends Thread {public void stopServer(){try { if(server!=null){ server.close();System.out.println("close task successed"); }} catch (IOException e) { System.out.println("close task failded"); }}public void run() {try {server = new ServerSocket(PORT);} catch (IOException e1) {// TODO Auto-generated catch blockSystem.out.println("S2: Error");e1.printStackTrace();}mExecutorService = Executors.newCachedThreadPool(); //创建一个线程池System.out.println("服务器已启动...");Socket client = null;while(flag) {try {System.out.println("S3: Error");client = server.accept(); System.out.println("S4: Error");//把客户端放入客户端集合中mList.add(client);mExecutorService.execute(new Service(client)); //启动一个新的线程来处理连接}catch ( IOException e) {System.out.println("S1: Error");e.printStackTrace();}}}} //获取IPv6的IP地址/*public String getLocalIpAddress() { try { for (Enumeration<NetworkInterface> en = NetworkInterface .getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); for (Enumeration<InetAddress> enumIpAddr = intf .getInetAddresses(); enumIpAddr.hasMoreElements();) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress()) { return inetAddress.getHostAddress().toString(); } } } } catch (SocketException ex) { Log.e("WifiPreference IpAddress", ex.toString()); } return null; } *///获取本地IPpublic static String getLocalIpAddress() { try { for (Enumeration<NetworkInterface> en = NetworkInterface .getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); for (Enumeration<InetAddress> enumIpAddr = intf .getInetAddresses(); enumIpAddr.hasMoreElements();) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress() && !inetAddress.isLinkLocalAddress()) { return inetAddress.getHostAddress().toString(); } } } } catch (SocketException ex) { Log.e("WifiPreference IpAddress", ex.toString()); } return null; }//处理与client对话的线程class Service implements Runnable {private volatile boolean kk=true;private Socket socket;private BufferedReader in = null;private String msg = "";public Service(Socket socket) {this.socket = socket;try {in = new BufferedReader(new InputStreamReader(socket.getInputStream()));msg="OK";this.sendmsg(msg);} catch (IOException e) {e.printStackTrace();}}public void run() {while(kk) {try {if((msg = in.readLine())!= null) {//当客户端发送的信息为：exit时，关闭连接if(msg.equals("exit")) {mList.remove(socket);//in.close();//socket.close();break;//接收客户端发过来的信息msg，然后发送给客户端。} else {Message msgLocal = new Message();msgLocal.what = 0x1234;msgLocal.obj =msg+" （客户端发送）" ;System.out.println(msgLocal.obj.toString());System.out.println(msg);myHandler.sendMessage(msgLocal);msg = socket.getInetAddress() + ":" + msg+"（服务器发送）";this.sendmsg(msg);}}} catch (IOException e) {System.out.println("close");kk=false;// TODO Auto-generated catch blocke.printStackTrace();}}}//向客户端发送信息public void sendmsg(String msg) {System.out.println(msg);PrintWriter pout = null;try {pout = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())),true);pout.println(msg);}catch (IOException e) {e.printStackTrace();}}}}

<RelativeLayout xmlns:android="/apk/res/android"xmlns:tools="/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><Buttonandroid:id="@+id/but1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignBottom="@+id/textView1"android:layout_alignParentRight="true"android:layout_marginRight="60dp"android:text="启动" /><TextViewandroid:id="@+id/textView2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignLeft="@+id/textView1"android:layout_below="@+id/textView1"android:layout_marginTop="44dp"android:text="内容" /><TextViewandroid:id="@+id/textView1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentTop="true"android:layout_marginLeft="15dp"android:layout_marginTop="48dp"android:text="IP" /></RelativeLayout>

客户端主要借鉴《疯狂Android讲义》：

UI端文件

package ;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;/***/public class MultiThreadClient extends Activity{// 定义界面上的两个文本框EditText input;TextView show;// 定义界面上的一个按钮Button send;Handler handler;// 定义与服务器通信的子线程ClientThread clientThread;@Overridepublic void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.main);input = (EditText) findViewById(R.id.input);send = (Button) findViewById(R.id.send);show = (TextView) findViewById(R.id.show);handler = new Handler() //①{@Overridepublic void handleMessage(Message msg){// 如果消息来自于子线程if (msg.what == 0x123){// 将读取的内容追加显示在文本框中show.append("\n" + msg.obj.toString());}}};clientThread = new ClientThread(handler);// 客户端启动ClientThread线程创建网络连接、读取来自服务器的数据new Thread(clientThread).start(); //①send.setOnClickListener(new OnClickListener(){@Overridepublic void onClick(View v){try{// 当用户按下发送按钮后，将用户输入的数据封装成Message，// 然后发送给子线程的HandlerMessage msg = new Message();msg.what = 0x345;msg.obj = input.getText().toString();clientThread.revHandler.sendMessage(msg);// 清空input文本框input.setText("");}catch (Exception e){e.printStackTrace();}}});}}

功能线程类：

/****/package ;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStream;import .Socket;import .SocketTimeoutException;import android.os.Handler;import android.os.Looper;import android.os.Message;/***/public class ClientThread implements Runnable{private Socket s;// 定义向UI线程发送消息的Handler对象private Handler handler;// 定义接收UI线程的消息的Handler对象public Handler revHandler;// 该线程所处理的Socket所对应的输入流BufferedReader br = null;OutputStream os = null;public ClientThread(Handler handler){this.handler = handler;}public void run(){try{System.out.println("T1");s = new Socket("10.0.2.15", 9999);System.out.println("T2");br = new BufferedReader(new InputStreamReader(s.getInputStream()));os = s.getOutputStream();// 启动一条子线程来读取服务器响应的数据new Thread(){@Overridepublic void run(){String content = null;// 不断读取Socket输入流中的内容。try{while ((content = br.readLine()) != null){// 每当读到来自服务器的数据之后，发送消息通知程序界面显示该数据Message msg = new Message();msg.what = 0x123;msg.obj = content;handler.sendMessage(msg);System.out.println(msg.obj.toString());}}catch (IOException e){e.printStackTrace();}}}.start();// 为当前线程初始化LooperLooper.prepare();// 创建revHandler对象revHandler = new Handler(){@Overridepublic void handleMessage(Message msg){// 接收到UI线程中用户输入的数据if (msg.what == 0x345){// 将用户在文本框内输入的内容写入网络try{System.out.println("HHHHHHH"+msg.obj.toString());os.write((msg.obj.toString() + "\r\n").getBytes("utf-8"));}catch (Exception e){e.printStackTrace();}}}};// 启动LooperLooper.loop();}catch (SocketTimeoutException e1){System.out.println("网络连接超时！！");}catch (Exception e){e.printStackTrace();}}}

布局文件很简单：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="/apk/res/android"android:orientation="vertical"android:layout_width="match_parent"android:layout_height="match_parent"><LinearLayout android:orientation="horizontal"android:layout_width="match_parent"android:layout_height="wrap_content"><!-- 定义一个文本框，它用于接受用户的输入 --><EditTextandroid:id="@+id/input" android:layout_width="240dp" android:layout_height="wrap_content" /><Buttonandroid:id="@+id/send" android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddingLeft="8px"android:text="@string/send"/></LinearLayout><TextViewandroid:id="@+id/show" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="top"android:background="#ffff"android:textSize="14dp"android:textColor="#f000"/></LinearLayout>

声明：真机上只需把客户端IP改成真机IP，即服务器上显示的IP即可通信

虚拟机上同一个虚拟机可通信

不同虚拟机由于Android虚拟机设计的原因，需要端口重定向等操作才能实现通信

附带两个工程的源码：/detail/mowen1111/5553829