Android与服务器通信的方法之一(TCP)

http://www.open-open.com/lib/view/open1344307965280.html

packagecom.yarin.android.Examples_08_04;  

   

importjava.io.BufferedReader;  

importjava.io.BufferedWriter;  

importjava.io.InputStreamReader;  

importjava.io.OutputStreamWriter;  

importjava.io.PrintWriter;  

importjava.net.InetAddress;  

importjava.net.Socket;  

importandroid.app.Activity;  

importandroid.os.Bundle;  

importandroid.util.Log;  

importandroid.view.View;  

importandroid.view.View.OnClickListener;  

importandroid.widget.Button;  

importandroid.widget.EditText;  

importandroid.widget.TextView;  

   

publicclass Activity01 extendsActivity  

{  

    privatefinal String        DEBUG_TAG   = "Activity01";  

        

    privateTextView    mTextView=null;  

    privateEditText    mEditText=null;  

    privateButton      mButton=null;  

       

    @Override 

    publicvoid 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(newOnClickListener()  

        {  

            publicvoid onClick(View v)  

            {  

                Socket socket = null;  

                String message = mEditText.getText().toString() + "\r\n";   

                try   

                {     

                    //创建Socket  

                    socket = newSocket("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 = newPrintWriter( newBufferedWriter( newOutputStreamWriter(socket.getOutputStream())),true);        

                    out.println(message);   

                        

                    //接收来自服务器的消息  

                    BufferedReader br = newBufferedReader(newInputStreamReader(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());  

                }  

            }  

        });  

    }  

} 

 

importjava.io.BufferedReader;

importjava.io.BufferedWriter;

importjava.io.InputStreamReader;

importjava.io.OutputStreamWriter;

importjava.io.PrintWriter;

importjava.net.InetAddress;

importjava.net.Socket;

importandroid.app.Activity;

importandroid.os.Bundle;

importandroid.util.Log;

importandroid.view.View;

importandroid.view.View.OnClickListener;

importandroid.widget.Button;

importandroid.widget.EditText;

importandroid.widget.TextView;

 

publicclass Activity01 extendsActivity

{

privatefinal String DEBUG_TAG = "Activity01";

 

privateTextView mTextView=null;

privateEditText mEditText=null;

privateButton mButton=null;

  

@Override

publicvoid 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(newOnClickListener()

{

publicvoid onClick(View v)

{

Socket socket = null;

String message = mEditText.getText().toString() + "\r\n";

try

{

//创建Socket

socket = newSocket("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 = newPrintWriter( newBufferedWriter( newOutputStreamWriter(socket.getOutputStream())),true);     

out.println(message);

 

//接收来自服务器的消息

BufferedReader br = newBufferedReader(newInputStreamReader(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 

packagecom.yarin.android.Examples_08_04;  

   

importjava.io.BufferedReader;  

importjava.io.BufferedWriter;  

importjava.io.InputStreamReader;  

importjava.io.OutputStreamWriter;  

importjava.io.PrintWriter;  

importjava.net.ServerSocket;  

importjava.net.Socket;  

   

publicclass Server implementsRunnable  

{  

    publicvoid run()  

    {  

        try 

        {  

            //创建ServerSocket  

            ServerSocket serverSocket = newServerSocket(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 = newBufferedReader(newInputStreamReader(client.getInputStream()));  

                    String str = in.readLine();  

                    System.out.println("read:"+ str);    

                    //向服务器发送消息  

                    PrintWriter out = newPrintWriter( newBufferedWriter( newOutputStreamWriter(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  

    publicstatic void main(String a[])  

    {  

        Thread desktopServerThread = newThread(newServer());  

        desktopServerThread.start();  

    }  

}