rpc demo 一学就会

package demo.rpc.server; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.lang.reflect.Method; import java.net.ServerSocket; import java.net.Socket; import demo.rpc.protocol.InvokerBean; public class Listener extends Thread { private RPCServer rpcServer; public Listener(RPCServer rpcServer) { this.rpcServer = rpcServer; } public void run() { ServerSocket server = null; try { System.out.println("server start..."); server = new ServerSocket(rpcServer.getPort()); while (rpcServer.isRun()) { // 监听客户端的请求，该方法会阻塞。即使调用了RPCServer的stop方法，也会在接收到一次请求之后才停止。 Socket socket = server.accept(); // 解析来自客户端的流 ObjectInputStream ois = new ObjectInputStream(socket.getInputStream()); InvokerBean invokerBean = (InvokerBean) ois.readObject(); String serviceName = invokerBean.getServiceName(); String methodName = invokerBean.getMethod().getMethodname(); Class<?>[] parameterType = invokerBean.getMethod().getParameterType(); Object[] parameters = invokerBean.getParameters(); System.out.println("invoking... serviceName = " + serviceName + ". methodName = " + methodName); // 从注册的服务列表中，获取服务，并利用反射进行调用 Object service = rpcServer.getServiceEngine().get(serviceName); if (service == null) { System.err.println("service not found!"); } else { Class<?> InterfaceClass = Class.forName(serviceName); Method method = InterfaceClass.getMethod(methodName, parameterType); Object result = method.invoke(service, parameters); invokerBean.setResult(result); } // 返回result ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream()); oos.writeObject(invokerBean); oos.flush(); socket.close(); System.out.println("invoking over"); } } catch (Exception e) { e.printStackTrace(); }finally { try { server.close(); } catch (IOException e) { e.printStackTrace(); } } System.out.println("Server stoped."); } }