Java远程调用（二）实现一个简单的服务框架

http://blog.csdn.net/itleochen/article/details/11270829

自己实现一个服务框架

用java程序自己写一个简单的服务框架
通信协议：socket 
网络io:bio
线程方式：无限线程池
远程调用的透明化方案：jdk 动态代理Proxy
序列化：java本身

贴上核心代码：

一、发布服务方法

 /**
  * 发布服务
  *
  * @param service
  *            服务实现
  * @param port
  *            服务端口
  * @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);
     /* 服务端socket,最多同时处理1000个服务请求 */
     ServerSocket server = new ServerSocket(port, 1000);
     ExecutorService executor = Executors.newCachedThreadPool();
     ;
     for (;;) {
         try {
             // 监听client socket请求
             final Socket socket = server.accept();
             executor.execute(new Runnable() {
                 @Override
                 public void run() {
                     try {
                         try {
                             ObjectInputStream input = new ObjectInputStream(
                                     socket.getInputStream());
                             try {
                                 // 发布服务的方法名
                                 String methodName = input.readUTF();
                                 // 入参
                                 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();
         }
     }
 }

二、调用服务

 /**
  * 引用服务
  *
  * @param
  *            接口泛型
  * @param interfaceClass
  *            接口类型
  * @param host
  *            服务器主机名
  * @param port
  *            服务器端口
  * @return 远程服务
  * @throws Exception
  */
 @SuppressWarnings("unchecked")
 public static  T refer(final Class 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 {
                     // 建立socket并尝试连接，失败则抛出异常
                     // Socket socket = new Socket(host, port);
                     Socket socket = new Socket();
                     // socket.close()执行时 若数据没有发送完成则阻塞 10秒
                     socket.setSoLinger(true, 10);
                     socket.connect(new InetSocketAddress(host, port));
                     try {
                         // 往socket写数据
                         ObjectOutputStream output = new ObjectOutputStream(
                                 socket.getOutputStream());
                         try {
                             output.writeUTF(method.getName());
                             output.writeObject(method.getParameterTypes());
                             output.writeObject(arguments);
                             // 读出数据
                             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();
                         }
                     }
                 }
             });
 }

没法传附件么？