feat(新增): 🚀 PipLineServer出栈顺序，进栈和出栈顺序

netty/service/src/main/java/cn/bunny/service/netty/demo5/PipLineServerOutbound.java

@@ -0,0 +1,90 @@
+package cn.bunny.service.netty.demo5;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.*;
+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 PipLineServerOutbound {
+    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 {
+                        // 通过 Channel 拿到pipLine
+                        ChannelPipeline pipeline = nioSocketChannel.pipeline();
+                        // handler 处理结果
+                        pipeline.addLast("h1", new ChannelInboundHandlerAdapter() {
+                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                                log.info("第一个");
+                                ByteBuf buf = (ByteBuf) msg;
+                                String name = buf.toString(Charset.defaultCharset());
+                                super.channelRead(ctx, name);
+                            }
+                        });
+
+                        // handler 第二个处理结果
+                        pipeline.addLast("h2", new ChannelInboundHandlerAdapter() {
+                            @Override
+                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                                log.info("第二个");
+                                // 将数据传输给下一个链，如果不使用下一个不会接受到相应内容
+                                super.channelRead(ctx, msg);
+                            }
+                        });
+
+
+                        // 第四个出栈内容
+                        pipeline.addLast("h4", new ChannelOutboundHandlerAdapter() {
+                            @Override
+                            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+                                log.info("第四个 出栈");
+                                super.write(ctx, msg, promise);
+                            }
+                        });
+
+                        // handler 第三个处理结果
+                        pipeline.addLast("h3", new ChannelInboundHandlerAdapter() {
+                            @Override
+                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+                                log.info("第三个 是否拿到上一个参数：{}", msg);
+                                ctx.writeAndFlush(ctx.alloc().buffer().writeBytes("服务。。。".getBytes()));
+                            }
+                        });
+
+                        // 第五个出栈内容
+                        pipeline.addLast("h5", new ChannelOutboundHandlerAdapter() {
+                            @Override
+                            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+                                log.info("第五个 出栈");
+                                super.write(ctx, msg, promise);
+                            }
+                        });
+
+                        // 第六个出栈内容
+                        pipeline.addLast("h6", new ChannelOutboundHandlerAdapter() {
+                            @Override
+                            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+                                log.info("第六个 出栈");
+                                super.write(ctx, msg, promise);
+                            }
+                        });
+                    }
+                }).bind(8080);
+
+        // 进栈：按照顺序进行
+        // 出栈：从后往前走
+        /**
+         *  ctx.writeAndFlush(ctx.alloc().buffer().writeBytes("服务。。。".getBytes())); 出栈
+         *  顺序和正常不一样，从当前调用的往前找，所以这个顺序是1234，因为4在3前面，当三执行完成后，4是出栈，所以之后才会执行4
+         */
+    }
+}