Python与Java间Socket通信实例代码

Python  /  管理员 发布于 8年前   151

Python与Java间Socket通信

　　之前做过一款Java的通讯工具,有发消息发文件等基本功能.可大家也都知道Java写的界面无论是AWT或Swing,那简直不是人看的,对于我们这些开发人员还好,如果是Release出去给用户看,那必须被鄙视到底.用C++的话,写的代码也是非常多的(QT这方面做得很好!),但我这里改用Python,以便到时用wxPython做界面.而且这两者跨平台也做得非常好.

　　这里只给出核心实现以及思路

　　Server(Java)接收从Clinet(Python)发送来的文件

　　JServer.java

import java.io.BufferedReader;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.ServerSocket;import java.net.Socket; public class JServer implements Runnable {   ServerSocket ss;   public JServer() throws Exception {    ss = new ServerSocket(8086);    new Thread(this).start();  }   @Override  public void run() {    int i = 0;    System.out.println("server startup.");    while (true) {      try {        Socket s = ss.accept();        // 每个客户端一个处理线程        new Handler(s, i).start();        i++;      } catch (IOException e) {        e.printStackTrace();      }    }   }   public static void main(String[] args) {    try {      new JServer();    } catch (Exception e) {      e.printStackTrace();    }  } } class Handler extends Thread {  Socket s;  int id;   public Handler(Socket s, int id) {    this.s = s;    this.id = id;  }   @Override  public void run() {    System.out.println("in handling..");     FileOutputStream fos = null;    try {      InputStream is = s.getInputStream();      BufferedReader in = new BufferedReader(new InputStreamReader(is));      // 从客户端读取发送过来的文件名      String filename = in.readLine();      System.out.println("read line " + id + " :" + filename);      File file = new File(filename);       int len = 0;      int BUFSIZE = 4*1024;      byte[] by = new byte[BUFSIZE * 1024];      fos = new FileOutputStream(file);      while ((len = is.read(by, 0, BUFSIZE)) != -1) {        fos.write(by, 0, len);        fos.flush();      }      System.out.println("done.");    } catch (Exception e) {      e.printStackTrace();    } finally {      // 服务端就不要手贱 关了socket否则Python 会出现错误Errno 10054让客户端关掉就行啦      try {        fos.close();      } catch (IOException e) {        e.printStackTrace();      }    }  }}

 　　Python客户端

# -*- coding: utf-8 -*-#!/usr/bin/python#coding=utf-8import timeimport threadingimport socketimport os class Client():  def __init__(self):    address = ('127.0.0.1', 8086)    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)    s.connect(address)    fn = 'test.zip'    ff = os.path.normcase(fn)     try:      f = open(fn, 'rb')      sendFile = SendFile(s,f)      sendFile.start()      print 'start to send file.'    except IOError:      print 'open err'  class SendFile(threading.Thread):  def __init__(self, sock, file):    threading.Thread.__init__(self)    self.file = file    self.sock = sock   def run(self):    print self.file    BUFSIZE = 1024    count = 0    name = self.file.name+'\r'　　　　　　　　　# 前1k字节是为了给服务端发送文件名 一定要加上'\r',不然服务端就不能readline了    for i in range(1, BUFSIZE - len(self.filename) -1):      name += '?'    print name    self.sock.send(name)    while True:      print BUFSIZE      fdata = self.file.read(BUFSIZE)      if not fdata:        print 'no data.'        break      self.sock.send(fdata)      count += 1      if len(fdata) != BUFSIZE:        print 'count:'+str(count)        print len(fdata)      nRead = len(fdata)     print 'send file finished.'    self.file.close()    self.sock.close()    print 'close socket' c = Client()

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