Java远程调用（二）实现一个简单的服务框架

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 <T>
*            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> 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 {
// 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？