基于socket实现简单的rpc调用

本文主要是介绍基于socket实现简单的rpc调用，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

首先结构图：

rpc_api:

api里面实现的rpc调用（RpcFramework）：

package com.th.rpc.framework;import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.net.ServerSocket;
import java.net.Socket;public class RpcFramework {public static void export(final Object service, int port) throws IOException {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);ServerSocket server = new ServerSocket(port);for (;;) {try {final Socket socket = server.accept();new Thread(new Runnable() {@Overridepublic void run() {try {ObjectInputStream input = new ObjectInputStream(socket.getInputStream());String methodName = input.readUTF();System.out.println("methodName " + methodName);Class<?>[] parameterTypes = (Class<?>[]) input.readObject();Object[] arguments = (Object[]) input.readObject();ObjectOutputStream output = new ObjectOutputStream(socket.getOutputStream());Method method = service.getClass().getMethod(methodName, parameterTypes);Object result = method.invoke(service, arguments);output.writeObject(result);output.close();input.close();} catch (Exception e) {e.printStackTrace();} finally {try {socket.close();} catch (IOException e) {e.printStackTrace();}}}}).start();} catch (Exception e) {}}}public static <T> T refer(final Class<T> interfaceClass, final String host, final int port) {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);T proxy = (T) Proxy.newProxyInstance(interfaceClass.getClassLoader(), new Class<?>[] { interfaceClass }, new RpcReferHandler(host, 1234));return proxy;}
}

RpcReferHandler:

package com.th.rpc.framework;import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.net.Socket;public class RpcReferHandler implements InvocationHandler {private String host;private int port;public RpcReferHandler(String host, int port) {this.host = host;this.port = port;}@Overridepublic Object invoke(Object proxy, Method method, Object[] args) throws Throwable {Socket socket = new Socket(host, port);ObjectOutputStream output = new ObjectOutputStream(socket.getOutputStream());ObjectInputStream input = null;try {output.writeUTF(method.getName());System.out.println("methodName : " + method.getName());output.writeObject(method.getParameterTypes());output.writeObject(args);input = new ObjectInputStream(socket.getInputStream());Object result = input.readObject();if (result instanceof Throwable)throw (Throwable) result;System.out.println(result);return result;} catch (Exception e) {e.printStackTrace();} finally {input.close();output.close();socket.close();}return null;}}

公共抽象类 HelloService：

provider:

package com.th.rpc.provider;import java.io.IOException;import com.th.rpc.framework.RpcFramework;
import com.th.rpc.service.HelloService;
import com.th.rpc.service.impl.HelloServiceImpl;public class RpcProvicer {public static void main(String[] args) throws IOException {HelloService service = new HelloServiceImpl();RpcFramework.export(service, 1234);}
}

HelloService实现类：

package com.th.rpc.service.impl;import com.th.rpc.service.HelloService;public class HelloServiceImpl implements HelloService {@Overridepublic String hello(String name) {return "Hello " + name;}@Overridepublic String hi(String msg) {return "Hi " + msg;}}

consumer:

package com.th.rpc.consumer;import com.th.rpc.framework.RpcFramework;
import com.th.rpc.service.HelloService;public class RpcConsumer {public static void main(String[] args) {HelloService service = RpcFramework.refer(HelloService.class, "127.0.0.1", 1234);String result = service.hello("World");String hi = service.hi("小明");System.out.println("client: " + result);System.out.println("client: " + hi);}
}

测试：

首先启动provider,然后启动consumer，测试结果如下：