68 lines
2.2 KiB
Java
68 lines
2.2 KiB
Java
package com.ktg.print.printserver;
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import io.netty.bootstrap.ServerBootstrap;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.SocketChannel;
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import io.netty.channel.socket.nio.NioServerSocketChannel;
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import io.netty.handler.codec.protobuf.ProtobufDecoder;
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import io.netty.handler.codec.protobuf.ProtobufEncoder;
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import io.netty.handler.codec.protobuf.ProtobufVarint32FrameDecoder;
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import io.netty.handler.codec.protobuf.ProtobufVarint32LengthFieldPrepender;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Component;
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/**
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* 基于netty的socket服务器端，与标签打印机的客户端建立长连接，实现网络远程打印
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*/
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@Component
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public class PrinterServer {
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@Autowired
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private PrintServerChannelInitializer printServerChannelInitializer;
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@Value("${netty.server.port}")
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private int port;
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@Value("${netty.server.threadcount}")
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private int bossThreadCount;
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private EventLoopGroup bossGroup;
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private EventLoopGroup workerGroup;
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private Channel serverChannel;
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PrinterServer(){
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bossGroup = new NioEventLoopGroup();
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workerGroup = new NioEventLoopGroup();
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}
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public void start(){
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try {
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ServerBootstrap serverBootstrap = new ServerBootstrap();
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serverBootstrap.group(bossGroup, workerGroup)
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.channel(NioServerSocketChannel.class)
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.childHandler(printServerChannelInitializer);
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ChannelFuture channelFuture = serverBootstrap.bind(port).sync();
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serverChannel = channelFuture.channel();
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serverChannel.closeFuture().sync();
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} catch (InterruptedException e) {
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e.printStackTrace();
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} finally {
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bossGroup.shutdownGracefully();
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workerGroup.shutdownGracefully();
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}
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}
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public void stop(){
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if(serverChannel !=null){
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serverChannel.close();
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serverChannel = null;
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}
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}
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}
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