Java tutorial
/* * Copyright 2012 The Netty Project * * The Netty Project licenses this file to you under the Apache License, * version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package com.my.netty.object; import io.netty.bootstrap.ServerBootstrap; import io.netty.channel.ChannelInitializer; import io.netty.channel.ChannelPipeline; import io.netty.channel.EventLoopGroup; import io.netty.channel.nio.NioEventLoopGroup; import io.netty.channel.socket.SocketChannel; import io.netty.channel.socket.nio.NioServerSocketChannel; import io.netty.handler.codec.serialization.ClassResolvers; import io.netty.handler.codec.serialization.ObjectDecoder; import io.netty.handler.codec.serialization.ObjectEncoder; /** * Modification of {@link EchoServer} which utilizes Java object serialization. */ public class ObjectEchoServer { private final int port; public ObjectEchoServer(int port) { this.port = port; } public void run() throws Exception { ServerBootstrap b = new ServerBootstrap(); EventLoopGroup bossGroup = new NioEventLoopGroup(); EventLoopGroup workerGroup = new NioEventLoopGroup(); try { b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class) .childHandler(new ChannelInitializer<SocketChannel>() { @Override public void initChannel(SocketChannel ch) throws Exception { ChannelPipeline cp = ch.pipeline(); cp.addLast(new ObjectEncoder()); cp.addLast(new ObjectDecoder(ClassResolvers.cacheDisabled(null))); cp.addLast(new ObjectEchoServerHandler()); } }); // Bind and start to accept incoming connections. System.out.println("server prepare staring"); b.bind(port).sync().channel().closeFuture().sync(); System.out.println("server start ok"); } finally { System.out.println("server do finally"); workerGroup.shutdownGracefully(); bossGroup.shutdownGracefully(); System.out.println("server closing ok"); } } public static void main(String[] args) throws Exception { int port; if (args.length > 0) { port = Integer.parseInt(args[0]); } else { port = 8080; } new ObjectEchoServer(port).run(); } }