netty4与netty5序列化问题记录

两个版本，序列化问题疑惑

在netty4上，使用序列化

Netty4.x实战(二) 对象传输 - 程序园
http://www.voidcn.com/article/p-hwrhqscn-bau.html

源码下载：

stevenlii/Socket_Netty
https://github.com/stevenlii/Socket_Netty

其中关键代码：

server.java

package bhz.netty.serial;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
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.serialization.ClassResolvers;
import io.netty.handler.codec.serialization.ObjectDecoder;
import io.netty.handler.codec.serialization.ObjectEncoder;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;

public class Server {

    public static void main(String[] args) throws Exception{
        
        EventLoopGroup pGroup = new NioEventLoopGroup();
        EventLoopGroup cGroup = new NioEventLoopGroup();
        
        ServerBootstrap b = new ServerBootstrap();
        b.group(pGroup, cGroup)
         .channel(NioServerSocketChannel.class)
         .option(ChannelOption.SO_BACKLOG, 1024)
         //设置日志
         .handler(new LoggingHandler(LogLevel.INFO))
         .childHandler(new ChannelInitializer<SocketChannel>() {
            protected void initChannel(SocketChannel sc) throws Exception {
                sc.pipeline().addLast(new ObjectDecoder(Integer.MAX_VALUE, ClassResolvers.cacheDisabled(null)));
                sc.pipeline().addLast(new ObjectEncoder());
                sc.pipeline().addLast(new ServerHandler());
            }
        });
        
        ChannelFuture cf = b.bind(8765).sync();
        
        cf.channel().closeFuture().sync();
        pGroup.shutdownGracefully();
        cGroup.shutdownGracefully();
        
    }
}

使用如下方式序列化

sc.pipeline().addLast(new ObjectDecoder(Integer.MAX_VALUE, ClassResolvers.cacheDisabled(null)));
                sc.pipeline().addLast(new ObjectEncoder());

而在netty5上，使用如下方式

sc.pipeline().addLast(MarshallingCodeCFactory.buildMarshallingDecoder());
                sc.pipeline().addLast(MarshallingCodeCFactory.buildMarshallingEncoder());

其中引用的是(https://github.com/stevenlii/Socket_Netty/blob/master/pom.xml)

<!-- https://mvnrepository.com/artifact/org.jboss.marshalling/jboss-marshalling -->
        <dependency>
            <groupId>org.jboss.marshalling</groupId>
            <artifactId>jboss-marshalling</artifactId>
            <version>2.0.4.Final</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.jboss.marshalling/jboss-marshalling-serial -->
        <dependency>
            <groupId>org.jboss.marshalling</groupId>
            <artifactId>jboss-marshalling-serial</artifactId>
            <version>2.0.4.Final</version>
            <scope>test</scope>
        </dependency>

详细方式在

基于netty的Marshalling序列化框架简单实现 - 简书
https://www.jianshu.com/p/bacdc610f557

也可以找到

疑惑：

如果在4上使用5的配置方式，则无法收到消息，非常奇怪。