feat(新增): 🚀 netty的 NioEventLoopGroup 的服务端消息向下传递

netty/service/src/main/java/cn/bunny/service/netty/demo1/StartClient01.java

@@ -3,9 +3,8 @@ package cn.bunny.service.netty.demo1;
 import io.netty.bootstrap.Bootstrap;
 import io.netty.channel.ChannelInitializer;
 import io.netty.channel.nio.NioEventLoopGroup;
-import io.netty.channel.socket.nio.NioServerSocketChannel;
 import io.netty.channel.socket.nio.NioSocketChannel;
-import io.netty.handler.codec.string.StringDecoder;
+import io.netty.handler.codec.string.StringEncoder;
 
 import java.net.InetSocketAddress;
 
@@ -19,14 +18,15 @@ public class StartClient01 {
                 // 添加 事件循环
                 .group(new NioEventLoopGroup())
                 // 选择客户端 channel 实现
-                .channel(NioServerSocketChannel.class)
+                .channel(NioSocketChannel.class)
                 // 添加处理器
                 .handler(new ChannelInitializer<NioSocketChannel>() {
                     // 连接后被调用
                     @Override
                     protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
-                        nioSocketChannel.pipeline().addLast(new StringDecoder());
+                        nioSocketChannel.pipeline().addLast(new StringEncoder());
                     }
+
                 })
                 .connect(new InetSocketAddress("localhost", 8080))
                 .sync()

netty/service/src/main/java/cn/bunny/service/netty/demo1/StartServer01.java

@@ -8,9 +8,9 @@ import io.netty.channel.nio.NioEventLoopGroup;
 import io.netty.channel.socket.nio.NioServerSocketChannel;
 import io.netty.channel.socket.nio.NioSocketChannel;
 import io.netty.handler.codec.string.StringDecoder;
+import lombok.extern.slf4j.Slf4j;
 
-import static java.lang.StringTemplate.STR;
-
+@Slf4j
 public class StartServer01 {
     /*
         服务器端处理内容
@@ -26,22 +26,22 @@ public class StartServer01 {
                 .childHandler(
                         // 代码客户端读写通道 添加别的 handler
                         new ChannelInitializer<NioSocketChannel>() {
-                    @Override
-                    protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
-                        // 添加解码，将传输过来的 ByteBuffer 转为字符串
-                        nioSocketChannel.pipeline().addLast(new StringDecoder());
-                        // 自定处理器
-                        nioSocketChannel.pipeline().addLast(new ChannelInboundHandlerAdapter() {
-                            // 发生读事件
                             @Override
-                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-                                // 打印上一步转化好的字符串
-                                System.out.println(STR."消息为\{msg}");
-                                super.channelRead(ctx, msg);
+                            protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
+                                // 添加解码，将传输过来的 ByteBuffer 转为字符串
+                                nioSocketChannel.pipeline().addLast(new StringDecoder());
+                                // 自定处理器
+                                nioSocketChannel.pipeline().addLast(new ChannelInboundHandlerAdapter() {
+                                    // 发生读事件
+                                    @Override
+                                    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                                        // 打印上一步转化好的字符串
+                                        System.out.println(STR."消息为\{msg}");
+                                        log.debug("消息：{}", msg);
+                                    }
+                                });
                             }
-                        });
-                    }
-                })
+                        })
                 // 绑定端口
                 .bind(8080);
     }

netty/service/src/main/java/cn/bunny/service/netty/demo2/EventLoopIoClient.java

@@ -0,0 +1,32 @@
+package cn.bunny.service.netty.demo2;
+
+import io.netty.bootstrap.Bootstrap;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import io.netty.handler.codec.string.StringEncoder;
+
+import java.net.InetSocketAddress;
+
+public class EventLoopIoClient {
+    public static void main(String[] args) throws InterruptedException {
+        Channel channel = new Bootstrap()
+                .group(new NioEventLoopGroup())
+                .channel(NioSocketChannel.class)
+                .handler(new ChannelInitializer<NioSocketChannel>() {
+                    @Override
+                    protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
+                        nioSocketChannel.pipeline().addLast(new StringEncoder());
+                    }
+                })
+                .connect(new InetSocketAddress("localhost", 8080))
+                .sync()
+                .channel();
+
+
+        System.out.println(channel);
+        channel.writeAndFlush("你好啊啊啊");
+        System.out.println();
+    }
+}

netty/service/src/main/java/cn/bunny/service/netty/demo2/EventLoopIoServer.java

@@ -0,0 +1,36 @@
+package cn.bunny.service.netty.demo2;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import lombok.extern.slf4j.Slf4j;
+
+import java.nio.charset.Charset;
+
+@Slf4j
+public class EventLoopIoServer {
+    public static void main(String[] args) {
+        new ServerBootstrap()
+                .group(new NioEventLoopGroup())
+                .channel(NioServerSocketChannel.class)
+
+                .childHandler(new ChannelInitializer<NioSocketChannel>() {
+                    @Override
+                    protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
+                        nioSocketChannel.pipeline().addLast(new ChannelInboundHandlerAdapter() {
+                            @Override
+                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                                ByteBuf buf = (ByteBuf) msg;
+                                log.debug(buf.toString(Charset.defaultCharset()));
+                            }
+                        });
+                    }
+                })
+                .bind(8080);
+    }
+}

netty/service/src/main/java/cn/bunny/service/netty/demo2/EventLoopIoServer向下传递.java

@@ -0,0 +1,45 @@
+package cn.bunny.service.netty.demo2;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.DefaultEventLoopGroup;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import lombok.extern.slf4j.Slf4j;
+
+import java.nio.charset.Charset;
+
+@Slf4j
+public class EventLoopIoServer向下传递 {
+    public static void main(String[] args) {
+        DefaultEventLoopGroup group = new DefaultEventLoopGroup();
+        new ServerBootstrap()
+                .group(new NioEventLoopGroup(), new NioEventLoopGroup(2))
+                .channel(NioServerSocketChannel.class)
+                .childHandler(new ChannelInitializer<NioSocketChannel>() {
+                    @Override
+                    protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
+                        nioSocketChannel.pipeline().addLast(group, "handler", new ChannelInboundHandlerAdapter() {
+                                    @Override
+                                    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                                        ByteBuf buf = (ByteBuf) msg;
+                                        log.debug(buf.toString(Charset.defaultCharset()));
+                                        // 让消息继续传递下去
+                                        ctx.fireChannelRead(msg);
+                                    }
+                                })
+                                .addLast(group, "handler2", new ChannelInboundHandlerAdapter() {
+                                    @Override
+                                    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                                        ByteBuf buf = (ByteBuf) msg;
+                                        log.debug(buf.toString(Charset.defaultCharset()));
+                                    }
+                                });
+                    }
+                }).bind(8080);
+    }
+}

netty/service/src/main/java/cn/bunny/service/netty/demo2/EventLoopIoThreadServer.java

@@ -0,0 +1,34 @@
+package cn.bunny.service.netty.demo2;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import lombok.extern.slf4j.Slf4j;
+
+import java.nio.charset.Charset;
+
+@Slf4j
+public class EventLoopIoThreadServer {
+    public static void main(String[] args) {
+        new ServerBootstrap()
+                .group(new NioEventLoopGroup(), new NioEventLoopGroup(2))
+                .channel(NioServerSocketChannel.class)
+                .childHandler(new ChannelInitializer<NioSocketChannel>() {
+                    @Override
+                    protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
+                        nioSocketChannel.pipeline().addLast(new ChannelInboundHandlerAdapter() {
+                            @Override
+                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                                ByteBuf buf = (ByteBuf) msg;
+                                log.debug(buf.toString(Charset.defaultCharset()));
+                            }
+                        });
+                    }
+                }).bind(8080);
+    }
+}