Android与服务器通信的方法之一(TCP)效率高安全性完善

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Android与服务器通信的方法之一（TCP）效率高安全性完善

客户端代码：
Java代码

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 package  com.yarin.android.Examples_08_04;   
     
 import  java.io.BufferedReader;   
 import  java.io.BufferedWriter;   
 import  java.io.InputStreamReader;   
 import  java.io.OutputStreamWriter;   
 import  java.io.PrintWriter;   
 import  java.net.InetAddress;   
 import  java.net.Socket;   
 import  android.app.Activity;   
 import  android.os.Bundle;   
 import  android.util.Log;   
 import  android.view.View;   
 import  android.view.View.OnClickListener;   
 import  android.widget.Button;   
 import  android.widget.EditText;   
 import  android.widget.TextView;   
     
 public  class  Activity01  extends  Activity   
 {   
      private  final  String        DEBUG_TAG   =  "Activity01" ;   
          
      private  TextView    mTextView= null ;   
      private  EditText    mEditText= null ;   
      private  Button      mButton= null ;   
         
      @Override  
      public  void  onCreate(Bundle savedInstanceState)   
      {   
          super .onCreate(savedInstanceState);   
          setContentView(R.layout.main);   
              
          mButton = (Button)findViewById(R.id.Button01);   
          mTextView=(TextView)findViewById(R.id.TextView01);   
          mEditText=(EditText)findViewById(R.id.EditText01);   
              
          //登陆   
          mButton.setOnClickListener( new  OnClickListener()   
          {   
              public  void  onClick(View v)   
              {   
                  Socket socket =  null ;   
                  String message = mEditText.getText().toString() +  "\r\n" ;    
                  try    
                  {      
                      //创建Socket   
                      socket =  new  Socket( "116.29.27.138" , 5554 );  //查看本机IP,每次开机都不同   
                      //socket=new Socket("192.168.1.110",50000);   
                      //向服务器发送消息   
                      PrintWriter out =  new  PrintWriter(  new  BufferedWriter(  new  OutputStreamWriter(socket.getOutputStream())), true );         
                      out.println(message);    
                          
                      //接收来自服务器的消息   
                      BufferedReader br =  new  BufferedReader( new  InputStreamReader(socket.getInputStream()));    
                      String msg = br.readLine();    
                          
                      if  ( msg !=  null  )   
                      {   
                          mTextView.setText(msg);   
                      }   
                      else  
                      {   
                          mTextView.setText( "数据错误!" );   
                      }   
                      //关闭流   
                      out.close();   
                      br.close();   
                      //关闭Socket   
                      socket.close();    
                  }   
                  catch  (Exception e)    
                  {   
                      // TODO: handle exception   
                      Log.e(DEBUG_TAG, e.toString());   
                  }   
              }   
          });   
      }   
 }  
 import  java.io.BufferedReader; 
 import  java.io.BufferedWriter; 
 import  java.io.InputStreamReader; 
 import  java.io.OutputStreamWriter; 
 import  java.io.PrintWriter; 
 import  java.net.InetAddress; 
 import  java.net.Socket; 
 import  android.app.Activity; 
 import  android.os.Bundle; 
 import  android.util.Log; 
 import  android.view.View; 
 import  android.view.View.OnClickListener; 
 import  android.widget.Button; 
 import  android.widget.EditText; 
 import  android.widget.TextView; 
 public  class  Activity01  extends  Activity 
 { 
 private  final  String DEBUG_TAG =  "Activity01" ; 
 private  TextView mTextView= null ; 
 private  EditText mEditText= null ; 
 private  Button mButton= null ; 
    
 @Override 
 public  void  onCreate(Bundle savedInstanceState) 
 { 
 super .onCreate(savedInstanceState); 
 setContentView(R.layout.main); 
 mButton = (Button)findViewById(R.id.Button01); 
 mTextView=(TextView)findViewById(R.id.TextView01); 
 mEditText=(EditText)findViewById(R.id.EditText01); 
 //登陆 
 mButton.setOnClickListener( new  OnClickListener() 
 { 
 public  void  onClick(View v) 
 { 
 Socket socket =  null ; 
 String message = mEditText.getText().toString() +  "\r\n" ; 
 try 
 { 
 //创建Socket 
 socket =  new  Socket( "116.29.27.138" , 5554 );  //查看本机IP,每次开机都不同 
 //socket=new Socket("192.168.1.110",50000); 
 //向服务器发送消息 
 PrintWriter out =  new  PrintWriter(  new  BufferedWriter(  new  OutputStreamWriter(socket.getOutputStream())), true );      
 out.println(message); 
 //接收来自服务器的消息 
 BufferedReader br =  new  BufferedReader( new  InputStreamReader(socket.getInputStream())); 
 String msg = br.readLine(); 
 if  ( msg !=  null  ) 
 { 
 mTextView.setText(msg); 
 } 
 else 
 { 
 mTextView.setText( "数据错误!" ); 
 } 
 //关闭流 
 out.close(); 
 br.close(); 
 //关闭Socket 
 socket.close(); 
 } 
 catch  (Exception e) 
 { 
 // TODO: handle exception 
 Log.e(DEBUG_TAG, e.toString()); 
 } 
 } 
 }); 
 } 
 } 
 服务器端代码： 
 Java代码  
 package  com.yarin.android.Examples_08_04;   
     
 import  java.io.BufferedReader;   
 import  java.io.BufferedWriter;   
 import  java.io.InputStreamReader;   
 import  java.io.OutputStreamWriter;   
 import  java.io.PrintWriter;   
 import  java.net.ServerSocket;   
 import  java.net.Socket;   
     
 public  class  Server  implements  Runnable   
 {   
      public  void  run()   
      {   
          try  
          {   
              //创建ServerSocket   
              ServerSocket serverSocket =  new  ServerSocket( 5554 );   
              while  ( true )   
              {   
                  //接受客户端请求   
                  Socket client = serverSocket.accept();   
                  System.out.println( "accept" );   
                  try  
                  {   
                      //接收客户端消息   
                      BufferedReader in =  new  BufferedReader( new  InputStreamReader(client.getInputStream()));   
                      String str = in.readLine();   
                      System.out.println( "read:"  + str);     
                      //向服务器发送消息   
                      PrintWriter out =  new  PrintWriter(  new  BufferedWriter(  new  OutputStreamWriter(client.getOutputStream())), true );         
                      out.println( "server message" );    
                      //关闭流   
                      out.close();   
                      in.close();   
                  }   
                  catch  (Exception e)   
                  {   
                      System.out.println(e.getMessage());   
                      e.printStackTrace();   
                  }   
                  finally  
                  {   
                      //关闭   
                      client.close();   
                      System.out.println( "close" );   
                  }   
              }   
          }   
          catch  (Exception e)   
          {   
              System.out.println(e.getMessage());   
          }   
      }   
      //main函数，开启服务器   
      public  static  void  main(String a[])   
      {   
          Thread desktopServerThread =  new  Thread( new  Server());   
          desktopServerThread.start();   
      }   
 } 
 
  