安卓socket小demo（安卓客户端+java服务器端）

//////////////////////////2016/01/31///////////////////////

////////////////////////by XBW////////////////////////////

//////////////////////环境 eclipse///////////////////////

终于搞到安卓通信了，用了socket套接字进行了一下小测试，把安卓客户端跟java服务器端代码共享了；

安卓4.0以后socket通信时，socket的建立连接等不能直接在主进程中，需要新开进程。于是又学习了一下线程，不过简单的socket连接测试线程用的还不是很明显，因为我没写UI，UI也不用更新；

先看一下安卓客户端的代码；

布局没写，直接用了新建的activity_main.xml，

config.java为配置项，

package Client_Config;

public class config {

	public static String ip="139.129.40.202";
	public static int port=3333;
}

MainActivity.java中只开了线程

package com.example.socket;

import public_class.ClientThread;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {
	
	private ClientThread clientThread;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.action_settings) {
        	clientThread=new ClientThread();
        	clientThread.start();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

ClientThread.java为处理线程

package public_class;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;

import com.example.socket.MainActivity;

import Client_Config.config;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;

public class ClientThread extends Thread{

	private SocketAddress socketAddress;
	private Socket socket;
	void connect()
	{
		socketAddress=new InetSocketAddress(config.ip, config.port);
		socket=new Socket();
		try
		{
			socket.connect(socketAddress,5000);
			Log.w("反馈：","连接成功");
		}catch(IOException e)
		{
			Log.w("反馈：","连接超时");
		}
	}
	public void run()
	{
		connect();
	}
}

最后需要配置一下AndroidManifest.xml的权限；

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.socket"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
	<uses-permission android:name="android.permission.INTERNET"></uses-permission>
	<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

下面是java服务器端代码

Client.java

package server;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.SocketException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class Client implements Runnable {

    private Socket s = null;
    private InputStream ips =null;
    private boolean bConnected = false;
    private String sendmsg=null;
    private String getnameString=null;
    public List<Map<Object, Object>> getList;
    public Client (Socket s) {
       this.s = s;
       try {
         ips = s.getInputStream();
         bConnected = true;
       } catch(IOException e) {
             e.printStackTrace();
          }
    }
    public void run() {
        try {
           while (bConnected) {
               InputStreamReader ipsr = new InputStreamReader(ips);
               BufferedReader br = new BufferedReader(ipsr);
               String ss = "";
               while((ss = br.readLine()) != null)
               System.out.println(ss);
            }
        } catch (SocketException e) {
            System.out.println("client is closed!");
            Myserver.rizhi(" "+(config.RL++)+". "+"client is closed!");
            Myserver.clients.remove(this);
        } catch (EOFException e) {
              System.out.println("client is closed!");
              Myserver.rizhi(" "+(config.RL++)+". "+"client is closed!");
              Myserver.clients.remove(this);
           }
           catch (IOException e) {
              e.printStackTrace();
           }
          finally {
            try {
              if (s != null) 
              {
            	  s.close();
            	  ips.close();
              }
              else
            	  System.out.println("与服务器断开连接");
            } catch (IOException e) {
                  e.printStackTrace();
              }
          }
    }
 }

config.java

package server;

public class config {
	//日志记录
		public static int RL=0;
}

Myserver.java

package server;

import java.awt.AWTException;
import java.awt.Image;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.SystemTray;
import java.awt.Toolkit;
import java.awt.TrayIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.io.UnsupportedEncodingException;
import java.net.BindException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JOptionPane;

public class Myserver {
	
	public static boolean Server_judge=false;
	public static boolean Server_started=false;
	public static ServerSocket socket = null;
	public static String path="";
	public static List<Client> clients = new ArrayList<Client>();
	public static void main(String [] args)
	{
		path = new Myserver().getClass().getProtectionDomain().getCodeSource().getLocation().getPath();
		try {
			path = URLDecoder.decode(path,"utf-8");
		} catch (UnsupportedEncodingException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		if (path.endsWith(".jar"))
		   path = path.substring(0, path.lastIndexOf("/") + 1);
		while(!Server_judge)
		{
			String inputport = JOptionPane.showInputDialog("请输入该服务器使用的端口:3333");
    		int port = Integer.parseInt(inputport);
    		new Myserver().start(port);
    		if(Server_started)
    		{		
    			hide();
    			jiankong();
    		}
		}
	}
	
	public void start(int port) {
        try {
           socket = new ServerSocket(port);
           System.out.println("服务器启动成功");         
           JOptionPane.showMessageDialog(null, "服务器启动成功");
           Server_started = true;
           Server_judge=true;
        } catch (BindException e) {
              System.out.println(" 端口已经被占用");
              JOptionPane.showMessageDialog(null, "端口已经被占用");
           }
          catch (IOException e) {
             e.printStackTrace();
          }      
   }
	public static void hide()
    {
    	 if(SystemTray.isSupported()){//判断当前平台是否支持托盘功能  
    		 //创建托盘实例  
             SystemTray tray = SystemTray.getSystemTray();  
             //创建托盘图标：1.显示图标Image 2.停留提示text 3.弹出菜单popupMenu 4.创建托盘图标实例  
            //1.创建Image图像  
             Image image = Toolkit.getDefaultToolkit().getImage(path+"//images//icon.png");  
             //2.停留提示text  
             String text = "聊天服务器";  
             //3.弹出菜单popupMenu  
             PopupMenu popMenu = new PopupMenu();  
             MenuItem itmOpen = new MenuItem("打开日志");  
             itmOpen.addActionListener(new ActionListener(){  
                 public void actionPerformed(ActionEvent e) {  
                	 try
                	 {   String basepath=path+"Server_Log.txt"; 
                		 Runtime runtime= Runtime.getRuntime();
                		 runtime.exec("notepad.exe "+basepath.substring(1));
                	 }catch(IOException e1)
                	 {
                		 e1.printStackTrace();
                		 JOptionPane.showMessageDialog(null, "日志不存在或路径错误，应在"+path+"文件中建立Server_Log.txt");
                	 }              	
                 }                 
             });  
             MenuItem itmExit = new MenuItem("退出");  
             itmExit.addActionListener(new ActionListener(){  
                 public void actionPerformed(ActionEvent e) {  
                	 System.exit(0); 
                 }  
             });  
             popMenu.add(itmOpen);  
             popMenu.add(itmExit);  
             //创建托盘图标  
             TrayIcon trayIcon = new TrayIcon(image,text,popMenu);  
             //将托盘图标加到托盘上  
             try {  
                 tray.add(trayIcon);  
             } catch (AWTException e1) {  
                 e1.printStackTrace();  
             }  
         }  	            
    }
	public static void jiankong()
    {
    	try {
            while (Server_started) {
                Socket s = socket.accept();
                Client c = new Client (s);
                System.out.println("一个用户连接进来");
                rizhi(" "+(config.RL++)+". "+"一个用户连接进来");
                new Thread(c).start();
                clients.add(c);
            }
         } catch (IOException e) {
               e.printStackTrace();
            }
            finally {
               try {
                  socket.close();
               } catch (IOException e) {
                     e.printStackTrace();
                  }
            }
    }
	public static void rizhi(String s)
    {
    	String toAppend = s;
    	try {
    		// 打开一个随机访问文件流，按读写方式
    		RandomAccessFile randomFile = new RandomAccessFile(path+"//Server_Log.txt", "rw");
    		// 文件长度，字节数
    		long fileLength = randomFile.length();
    		// 将写文件指针移到文件尾。
    		randomFile.seek(fileLength);
    		String c=new String(toAppend.getBytes("GBK"),"ISO8859_1");
    		randomFile.writeBytes(c+"\r\n");
    		randomFile.close();
    		} catch (IOException e) {
    		e.printStackTrace();
    		}
    }
}

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