Android Socket编程android端服务器和客户端的实现

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       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 java.net.InetAddress;import java.net.NetworkInterface;import java.net.ServerSocket;import java.net.Socket;import java.net.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 2013/6/9 */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IP    private 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IP    public 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="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/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" >    <Button        android: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" />    <TextView        android: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" />    <TextView        android: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 org.crazyit.net;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 org.crazyit.net;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.Socket;import java.net.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="http://schemas.android.com/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:http://download.csdn.net/detail/mowen1111/5553829


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