Python服务器与多种客户端（Python/Java/Android）之间的通信

来源：互联网发布：大智慧mac版好用吗编辑：程序博客网时间：2024/06/05 22:33

概述：

我们不会一直满足于客户端程序的开发，因为太过受限了。为了打破这样的受限，你需要做的就是去编写服务器端代码。以及如何在服务器与客户端之间的通信。以下将对此以Python为服务器，并分别以Python、Java、Android为客户端作一个简单的介绍。

服务器端：

test_tcp_server.py

#!/usr/bin/env pythonfrom socket import *from time import ctimeHOST = ''PORT = 21567BUFSIZ = 1024ADDR = (HOST, PORT)tcpSerSock = socket(AF_INET, SOCK_STREAM)tcpSerSock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)tcpSerSock.bind(ADDR)tcpSerSock.listen(5)while True:    print 'waiting for connection...'    tcpCliSock, addr = tcpSerSock.accept()    print '...connected from:', addr        while True:        data = tcpCliSock.recv(BUFSIZ)        if not data:            break        tcpCliSock.send('get your data:%s\n[%s]' % (data, ctime()))            tcpCliSock.close        tcpSerSock.close

对于上面的代码，有一点需要我们来注意一下。tcpSerSock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)。当然如果你高兴，可以不加上这一句，不过不加这一句的后果就是上面的端口不能再复用。

客户端：

1.python

#!/usr/bin/env pythonfrom socket import *HOST = 'input your host ip'PORT = 21567BUFSIZ = 1024ADDR = (HOST, PORT)tcpCliSock = socket(AF_INET, SOCK_STREAM)tcpCliSock.connect(ADDR)while True:    data = raw_input('> ')    if not data:        break    tcpCliSock.send(data)        recv_data = tcpCliSock.recv(BUFSIZ)    if not recv_data:        break    print recv_datatcpCliSock.close()

2.Java

public static void main(String[] args) throws IOException {                Socket socket = new Socket(HOST, PORT);        OutputStream outputStream = socket.getOutputStream();        outputStream.write(("Hello server with java").getBytes());        outputStream.flush();        System.out.println(socket);                InputStream is = socket.getInputStream();        byte[] bytes = new byte[1024];        int n = is.read(bytes);        System.out.println(new String(bytes, 0, n));                is.close();        socket.close();    }

运行效果图：

3.Android

public class TCPClientActivity extends Activity {        private int getLayoutResID() {        return R.layout.activity_tcp_client;    }        private final int HANDLER_MSG_TELL_RECV = 0x124;        private EditText mHostEditText = null;    private EditText mPortEditText = null;    private EditText mContentEditText = null;        private Button mSubmitButton = null;    private Button mCancelButton = null;        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(getLayoutResID());                initEvent();    }        private void initEvent() {        initViews();                setViews();    }        private void initViews() {        mHostEditText = (EditText) findViewById(R.id.client_method_editText);        mPortEditText = (EditText) findViewById(R.id.client_mode_editText);        mContentEditText = (EditText) findViewById(R.id.client_content_editText);                mSubmitButton = (Button) findViewById(R.id.client_submit_button);        mCancelButton = (Button) findViewById(R.id.client_cancel_button);    }        private void setViews() {        mSubmitButton.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View arg0) {                String host = mHostEditText.getText().toString();                String port = mPortEditText.getText().toString();                String content = mContentEditText.getText().toString();                                Toast.makeText(TCPClientActivity.this, host + ", " + port + ", " + content, 0).show();                startNetThread(host, Integer.parseInt(port), content);            }        });                mCancelButton.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View arg0) {                setEmptyEdittext();            }        });    }        private void startNetThread(final String host, final int port, final String data) {        Thread thread = new Thread() {            @Override            public void run() {                try {                    Socket socket = new Socket(host, port);                    OutputStream outputStream = socket.getOutputStream();                    outputStream.write((data).getBytes());                    outputStream.flush();                    System.out.println(socket);                                        InputStream is = socket.getInputStream();                    byte[] bytes = new byte[1024];                    int n = is.read(bytes);                    System.out.println(new String(bytes, 0, n));                                        Message msg = handler.obtainMessage(HANDLER_MSG_TELL_RECV, new String(bytes, 0, n));                    msg.sendToTarget();                                        is.close();                    socket.close();                } catch (Exception e) {                }            }        };                thread.start();    }        Handler handler = new Handler() {        public void handleMessage(Message msg) {            AlertDialog.Builder builder = new AlertDialog.Builder(TCPClientActivity.this);            builder.setMessage("来自服务器的数据：" + (String)msg.obj);            builder.create().show();        };    };        private void setEmptyEdittext() {        mHostEditText.setText("");        mPortEditText.setText("");        mContentEditText.setText("");    }}

运行效果图：

备注：对于上面的客户端程序，我想是没有什么问题的。不过如果你只是原原本本按照上面的流程来走，可能会运行不了。因为你Linux中的防火墙受限，在实验中我们通常选择关闭防火墙：

# /etc/init.d/iptables stop

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