ChatServer/src/main/java/cn/com/zyjblogs/chat/netty/SocketServer.java

package cn.com.zyjblogs.chat.netty;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.io.Closeable;

/**
 * @author Gjing
 **/
@Slf4j
@Service
public class SocketServer implements Runnable, Closeable {
    @Resource
    private SocketInitializer socketInitializer;

    /**
     * netty服务监听端口
     */
    @Value("${spring.netty.port:8808}")
    private  int port;
    /**
     * 主线程组数量
     */
    @Value("${spring.netty.bossThread:1}")
    private int bossThread;
    private ServerBootstrap serverBootstrap = new ServerBootstrap();
    // 创建两个线程组，bossGroup为接收请求的线程组，一般1-2个就行
    private NioEventLoopGroup bossGroup = new NioEventLoopGroup(this.bossThread);
    // 实际工作的线程组
    private NioEventLoopGroup workerGroup = new NioEventLoopGroup();


    /**
     * 初始化netty配置
     */
    private void init() {
        this.serverBootstrap.group(bossGroup, workerGroup) // 两个线程组加入进来
                .channel(NioServerSocketChannel.class)  // 配置为nio类型
                .childHandler(this.socketInitializer); // 加入自己的初始化器
        //对关闭通道进行监听
        ChannelFuture cf = this.serverBootstrap.bind(this.port);
        //对关闭通道进行监听
        try {
            cf.channel().closeFuture().sync();
        } catch (InterruptedException e) {
        }
    }
    /**
     * 启动netty服务器
     */
    @Override
    public void run() {
        init();
    }

    @Override
    public void close() {
        //优雅关闭
        log.info("netty closing");
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
        log.info("netty close");
    }
}