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-8

import time

import threading

import socket

import 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()