NettyServer.java
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package com.viontech.netty;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
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.LengthFieldBasedFrameDecoder;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;
import java.nio.ByteOrder;
/**
* .
*
* @author 谢明辉
* @date 2020/8/18
*/
@Component
@Slf4j
public class NettyServer implements CommandLineRunner {
@Value("${netty.port:30001}")
private int port;
@Override
public void run(String[] args) {
EventLoopGroup workerGroup = new NioEventLoopGroup(30);
EventLoopGroup bossGroup = new NioEventLoopGroup();
try {
ServerBootstrap b = new ServerBootstrap();
b = b.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.childHandler(new ChannelInitializer<SocketChannel>() {
@Override
protected void initChannel(SocketChannel ch) {
ch.pipeline().addLast(new LoggingHandler(LogLevel.INFO));
ch.pipeline().addLast(new LengthFieldBasedFrameDecoder(ByteOrder.LITTLE_ENDIAN, 1024 * 1024 * 1000, 4, 4, -8, 0, true));
ch.pipeline().addLast(new ByteToMessageCodecHandler());
ch.pipeline().addLast(new NettyReceiverHandler());
}
})
.option(ChannelOption.SO_BACKLOG, 128)
.childOption(ChannelOption.SO_KEEPALIVE, true);
log.info("通道构建完毕");
b.bind(port).addListener(future -> {
if (future.isSuccess()) {
log.info("端口[{}]绑定成功", port);
} else {
log.info("端口[{}]绑定失败", port);
}
});
} catch (Exception e) {
log.error("", e);
}
}
}