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.common.client; import com.common.utils.Byte2ObjectUtils; import com.common.utils.ByteBuff2JSON; import com.common.utils.JsonStr2ByteBuffUtils; import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelInboundHandlerAdapter; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * Handler implementation for the echo client. It initiates the ping-pong * traffic between the echo client and server by sending the first message to * the server. */ public class WrappedClientHandler extends ChannelInboundHandlerAdapter { private static Log log = LogFactory.getLog(WrappedClientHandler.class); private ByteBuf data; /** * Creates a client-side handler. */ public WrappedClientHandler(String data) { this.data = JsonStr2ByteBuffUtils.transform(data); log.info("client has init data"); } @Override public void channelActive(ChannelHandlerContext ctx) { ctx.writeAndFlush(data); System.out.println(data); System.out.println("client has send data to server"); } @Override public void channelRead(ChannelHandlerContext ctx, Object msg) { ByteBuf byteBuf = (ByteBuf) msg; String json = ByteBuff2JSON.transform(byteBuf); System.out.println(json); System.out.println("server?"); } @Override public void channelReadComplete(ChannelHandlerContext ctx) { // ??? ctx.flush(); ctx.close(); // System.gc(); } @Override public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) { // Close the connection when an exception is raised. cause.printStackTrace(); ctx.close(); } }