Netty(九) Netty会话清除

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Netty(九) Netty会话清除

netty学习目录
一、Netty(一) NIO例子
二、Netty(二) netty服务端
三、Netty(三) Netty客户端+服务端
四、Netty(四) 简化版Netty源码
五、Netty(五)Netty5.x服务端
六、Netty(六) Netty Http 服务器例子
七、Netty(七) Netty服务端+客户端代码
八、Netty(八) Netty多客户端连接例子
九、Netty(九) Netty会话清除
十、Netty(十) Netty自定义编码器解码器
十一、Netty(十一) Netty对象传输

package com.zqw.netty5x.heart;import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import io.netty.handler.timeout.IdleStateHandler;public class Server {public static void main(String[] args) {ServerBootstrap bootstrap = new ServerBootstrap();EventLoopGroup boss = new NioEventLoopGroup();EventLoopGroup worker = new NioEventLoopGroup();try{bootstrap.group(boss, worker);bootstrap.channel(NioServerSocketChannel.class);bootstrap.childHandler(new ChannelInitializer<Channel>() {@Overrideprotected void initChannel(Channel ch) throws Exception {ch.pipeline().addLast(new StringEncoder());ch.pipeline().addLast(new StringDecoder());ch.pipeline().addLast(new IdleStateHandler(5,5,10));ch.pipeline().addLast(new ServerHandler());}});bootstrap.option(ChannelOption.SO_BACKLOG,1024);bootstrap.childOption(ChannelOption.TCP_NODELAY, true);bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);ChannelFuture future = bootstrap.bind(7777);System.out.println("服务启动！");future.channel().closeFuture().sync();}catch (Exception e){e.printStackTrace();}finally {boss.shutdownGracefully();worker.shutdownGracefully();}}
}

package com.zqw.netty5x.heart;import io.netty.channel.*;
import io.netty.handler.timeout.IdleState;
import io.netty.handler.timeout.IdleStateEvent;
import io.netty.util.concurrent.EventExecutorGroup;public class ServerHandler extends SimpleChannelInboundHandler<String> {@Overrideprotected void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {System.out.println(msg);ctx.writeAndFlush("回话");}@Overridepublic void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {if(evt instanceof IdleStateEvent){IdleStateEvent event = (IdleStateEvent) evt;if(event.state() == IdleState.ALL_IDLE){ChannelFuture future = ctx.writeAndFlush("我要把你清除掉了");future.addListener(new ChannelFutureListener() {@Overridepublic void operationComplete(ChannelFuture future) throws Exception {future.channel().close();}});return;}}super.userEventTriggered(ctx, evt);}
}

package com.zqw.netty5x.heart;import com.zqw.netty5x.ClientHandler1;
import com.zqw.netty5x.MutiClient1;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.atomic.AtomicInteger;public class MultiClient {private Bootstrap bootstrap = new Bootstrap();private List<Channel> channels = new ArrayList<>();private AtomicInteger integer = new AtomicInteger();public void init(int count){EventLoopGroup worker = new NioEventLoopGroup();bootstrap.group(worker);bootstrap.channel(NioSocketChannel.class);bootstrap.handler(new ChannelInitializer<io.netty.channel.Channel>() {@Overrideprotected void initChannel(io.netty.channel.Channel ch) throws Exception {ch.pipeline().addLast(new StringEncoder());ch.pipeline().addLast(new StringDecoder());ch.pipeline().addLast(new ClientHandler1());}});for (int i = 0; i < count ; i++) {ChannelFuture future = bootstrap.connect("192.168.1.4",7777);channels.add(future.channel());}}public Channel next(){return getChannel(0);}private Channel getChannel(int count) {Channel channel = channels.get(Math.abs(integer.getAndIncrement() % channels.size()));if(!channel.isActive()){if(count >= channels.size()){throw new RuntimeException("没有可用的channel");}reconnect(channel);return getChannel(++count);}return channel;}private void reconnect(Channel channel) {synchronized (channel){System.out.println("重连。。。。。");int index = channels.indexOf(channel);channel = bootstrap.connect("192.168.1.4",7777).channel();channels.set(index, channel);}}public static void main(String[] args) {MultiClient mutiClient = new MultiClient();mutiClient.init(10);Scanner scanner = new Scanner(System.in);while(true){System.out.println("请输入:");String str = scanner.next();try{Channel channel = mutiClient.next();channel.writeAndFlush(str);}catch (Exception e){e.printStackTrace();}}}
}

package com.zqw.netty5x;import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelHandlerInvoker;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.util.concurrent.EventExecutorGroup;public class ClientHandler1 extends SimpleChannelInboundHandler<String> {@Overrideprotected void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {System.out.println(msg);}
}