자바 원 격 호출 (2) 간단 한 서비스 프레임 워 크 실현

	/**
	 *     
	 * 
	 * @param service
	 *                
	 * @param port
	 *                
	 * @throws Exception
	 */
	public static void export(final Object service, final int port)
			throws Exception {
		if (service == null)
			throw new IllegalArgumentException("service instance == null");
		if (port <= 0 || port > 65535)
			throw new IllegalArgumentException("Invalid port " + port);
		System.out.println("Export service " + service.getClass().getName()
				+ " on port " + port);
		/*    socket,      1000      */
		ServerSocket server = new ServerSocket(port, 1000);
		ExecutorService executor = Executors.newCachedThreadPool();
		;
		for (;;) {
			try {
				//   client socket  
				final Socket socket = server.accept();
				executor.execute(new Runnable() {
					@Override
					public void run() {
						try {
							try {
								ObjectInputStream input = new ObjectInputStream(
										socket.getInputStream());
								try {
									//         
									String methodName = input.readUTF();
									//   
									Class<?>[] parameterTypes = (Class<?>[]) input
											.readObject();
									Object[] arguments = (Object[]) input
											.readObject();
									ObjectOutputStream output = new ObjectOutputStream(
											socket.getOutputStream());
									try {
										Method method = service.getClass()
												.getMethod(methodName,
														parameterTypes);
										Object result = method.invoke(service,
												arguments);
										output.writeObject(result);
									} catch (Throwable t) {
										output.writeObject(t);
									} finally {
										output.close();
									}
								} finally {
									input.close();
								}
							} finally {
								if (socket != null) {
									socket.close();
								}
							}
						} catch (Exception e) {
							e.printStackTrace();
						}
					}
				});
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 *     
	 * 
	 * @param <T>
	 *                
	 * @param interfaceClass
	 *                
	 * @param host
	 *                  
	 * @param port
	 *                 
	 * @return     
	 * @throws Exception
	 */
	@SuppressWarnings("unchecked")
	public static <T> T refer(final Class<T> interfaceClass, final String host,
			final int port) throws Exception {
		if (interfaceClass == null)
			throw new IllegalArgumentException("Interface class == null");
		if (!interfaceClass.isInterface())
			throw new IllegalArgumentException("The "
					+ interfaceClass.getName() + " must be interface class!");
		if (host == null || host.length() == 0)
			throw new IllegalArgumentException("Host == null!");
		if (port <= 0 || port > 65535)
			throw new IllegalArgumentException("Invalid port " + port);
		System.out.println("Get remote service " + interfaceClass.getName()
				+ " from server " + host + ":" + port);
		return (T) Proxy.newProxyInstance(interfaceClass.getClassLoader(),
				new Class<?>[] { interfaceClass }, new InvocationHandler() {
					public Object invoke(Object proxy, Method method,
							Object[] arguments) throws Throwable {
						//   socket     ，       
						// Socket socket = new Socket(host, port);
						Socket socket = new Socket();
						// socket.close()                 10 
						socket.setSoLinger(true, 10);
						socket.connect(new InetSocketAddress(host, port));
						try {
							//  socket   
							ObjectOutputStream output = new ObjectOutputStream(
									socket.getOutputStream());
							try {
								output.writeUTF(method.getName());
								output.writeObject(method.getParameterTypes());
								output.writeObject(arguments);
								//     
								ObjectInputStream input = new ObjectInputStream(
										socket.getInputStream());
								try {
									Object result = input.readObject();
									if (result instanceof Throwable) {
										throw (Throwable) result;
									}
									return result;
								} finally {
									input.close();
								}
							} finally {
								if (output != null) {
									output.close();
								}
							}
						} finally {
							if (socket != null) {
								socket.close();
							}
						}
					}
				});
	}