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.yao.netty.objectecho; import com.yao.netty.transferobj.*; import com.yao.netty.transferobj.Dog; import io.netty.channel.ChannelHandlerAdapter; import io.netty.channel.ChannelHandlerContext; import java.util.ArrayList; import java.util.List; /** * Handler implementation for the object echo client. It initiates the * ping-pong traffic between the object echo client and server by sending the * first message to the server. */ public class ObjectEchoClientHandler extends ChannelHandlerAdapter { private final List<Integer> firstMessage; private final Dog dog; /** * Creates a client-side handler. */ public ObjectEchoClientHandler() { firstMessage = new ArrayList<Integer>(ObjectEchoClient.SIZE); for (int i = 0; i < ObjectEchoClient.SIZE; i++) { firstMessage.add(Integer.valueOf(i)); } dog = new Dog(); dog.setName("wangerxiao"); } @Override public void channelActive(ChannelHandlerContext ctx) { // Send the first message if this handler is a client-side handler. /* ctx.writeAndFlush(new Dog(){ { setName("yao"); } });*/ ctx.writeAndFlush(dog); } @Override public void channelRead(ChannelHandlerContext ctx, Object msg) { // Echo back the received object to the server. /*System.out.println(msg); ctx.write(msg);*/ } @Override public void channelReadComplete(ChannelHandlerContext ctx) { ctx.flush(); } @Override public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) { cause.printStackTrace(); ctx.close(); } }