netty粘包半包自定义填充长度解码

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package com.io.netty.netty.netty12;   import io.netty.bootstrap.Bootstrap; import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelFuture; 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.SocketChannel; import io.netty.channel.socket.nio.NioSocketChannel; import io.netty.handler.logging.LogLevel; import io.netty.handler.logging.LoggingHandler; import lombok.extern.slf4j.Slf4j;   import java.util.Arrays; import java.util.Random;   @Slf4j public class HelloWorldClient {         //填充，每次填充10个字节，不足10字节填满到10字节     public static byte[] fill0Bytes(char c, int len) {         byte[] result = new byte[10];         Arrays.fill(result, (byte) '_');         byte charByte = (byte) c;         for (int i = 0; i < len; i++) {             result[i] = charByte;         }         return result;     }       static void start() {         NioEventLoopGroup worker = new NioEventLoopGroup();         try {             Bootstrap bootstrap = new Bootstrap();             bootstrap.channel(NioSocketChannel.class);             bootstrap.group(worker);             bootstrap.handler(new ChannelInitializer<SocketChannel>() {                 @Override                 protected void initChannel(SocketChannel ch) {                     ch.pipeline().addLast(new LoggingHandler(LogLevel.DEBUG));                     ch.pipeline().addLast(new ChannelInboundHandlerAdapter() {                         @Override                         public void channelActive(ChannelHandlerContext ctx) throws Exception {                             ByteBuf buf=ctx.alloc().buffer();                             char c = '0';                             Random random = new Random();                             for (int i = 0; i < 10; i++) {                                 byte[] bytes = fill0Bytes(c, random.nextInt(10) + 1);                                 c++;                                 buf.writeBytes(bytes);                             }                             ctx.writeAndFlush(buf);                         }                     });                 }             });             ChannelFuture localhost = bootstrap.connect("localhost", 9091).sync();             localhost.channel().closeFuture().sync();         } catch (InterruptedException e) {             log.debug("server error", e);         } finally {             worker.shutdownGracefully();         }         }       public static void main(String[] args) {             start();     } }

　　

 

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package com.io.netty.netty.netty12;   import io.netty.bootstrap.Bootstrap; import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelFuture; 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.SocketChannel; import io.netty.channel.socket.nio.NioSocketChannel; import io.netty.handler.logging.LogLevel; import io.netty.handler.logging.LoggingHandler; import lombok.extern.slf4j.Slf4j;   import java.util.Arrays; import java.util.Random;   @Slf4j public class HelloWorldClient {         //填充，每次填充10个字节，不足10字节填满到10字节     public static byte[] fill0Bytes(char c, int len) {         byte[] result = new byte[10];         Arrays.fill(result, (byte) '_');         byte charByte = (byte) c;         for (int i = 0; i < len; i++) {             result[i] = charByte;         }         return result;     }       static void start() {         NioEventLoopGroup worker = new NioEventLoopGroup();         try {             Bootstrap bootstrap = new Bootstrap();             bootstrap.channel(NioSocketChannel.class);             bootstrap.group(worker);             bootstrap.handler(new ChannelInitializer<SocketChannel>() {                 @Override                 protected void initChannel(SocketChannel ch) {                     ch.pipeline().addLast(new LoggingHandler(LogLevel.DEBUG));                     ch.pipeline().addLast(new ChannelInboundHandlerAdapter() {                         @Override                         public void channelActive(ChannelHandlerContext ctx) throws Exception {                             ByteBuf buf=ctx.alloc().buffer();                             char c = '0';                             Random random = new Random();                             for (int i = 0; i < 10; i++) {                                 byte[] bytes = fill0Bytes(c, random.nextInt(10) + 1);                                 c++;                                 buf.writeBytes(bytes);                             }                             ctx.writeAndFlush(buf);                         }                     });                 }             });             ChannelFuture localhost = bootstrap.connect("localhost", 9091).sync();             localhost.channel().closeFuture().sync();         } catch (InterruptedException e) {             log.debug("server error", e);         } finally {             worker.shutdownGracefully();         }         }       public static void main(String[] args) {             start();     } }