netty: Marshalling序列化示例

一、请求对象和响应对象，分别要实现Serializable接口

package cn.edu.tju;

import java.io.Serializable;

public class UserRequest implements Serializable {
    private String username;
    private String password;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public String toString() {
        return "UserRequest{" +
                "username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

package cn.edu.tju;

import java.io.Serializable;

public class UserResponse implements Serializable {
    private String username;
    private int age;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    @Override
    public String toString() {
        return "UserResponse{" +
                "username='" + username + '\'' +
                ", age=" + age +
                '}';
    }
}

二、返回Marshalling Encoder和Decoder的工厂类：

package cn.edu.tju;


import io.netty.handler.codec.marshalling.DefaultMarshallerProvider;
import io.netty.handler.codec.marshalling.DefaultUnmarshallerProvider;
import io.netty.handler.codec.marshalling.MarshallerProvider;
import io.netty.handler.codec.marshalling.MarshallingDecoder;
import io.netty.handler.codec.marshalling.MarshallingEncoder;
import io.netty.handler.codec.marshalling.UnmarshallerProvider;

import org.jboss.marshalling.MarshallerFactory;
import org.jboss.marshalling.Marshalling;
import org.jboss.marshalling.MarshallingConfiguration;


public final class MarshallingCodeCFactory {

    public static MarshallingDecoder buildMarshallingDecoder() {
        final MarshallerFactory marshallerFactory = Marshalling.getProvidedMarshallerFactory("serial");
        final MarshallingConfiguration configuration = new MarshallingConfiguration();
        configuration.setVersion(5);
        UnmarshallerProvider provider = new DefaultUnmarshallerProvider(marshallerFactory, configuration);
        MarshallingDecoder decoder = new MarshallingDecoder(provider, 1024);
        return decoder;
    }


    public static MarshallingEncoder buildMarshallingEncoder() {
        final MarshallerFactory marshallerFactory = Marshalling.getProvidedMarshallerFactory("serial");
        final MarshallingConfiguration configuration = new MarshallingConfiguration();
        configuration.setVersion(5);
        MarshallerProvider provider = new DefaultMarshallerProvider(marshallerFactory, configuration);
        MarshallingEncoder encoder = new MarshallingEncoder(provider);
        return encoder;
    }
}

三、服务器端handler和启动类

package cn.edu.tju;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

public class MyObjectServerHandler extends ChannelInboundHandlerAdapter {
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        UserRequest userRequest = (UserRequest) msg;
        System.out.println("server received message.....");
        System.out.println(userRequest);

        UserResponse userResponse = new UserResponse();
        userResponse.setUsername("amadeus liu");
        userResponse.setAge(32);
        ctx.writeAndFlush(userResponse);

    }
}

package cn.edu.tju;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
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.LengthFieldBasedFrameDecoder;
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.codec.string.StringDecoder;

import java.net.InetSocketAddress;

public class NettyTcpObjectServer2 {
    public static void main(String[] args) {
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup(16);

        try {
            ServerBootstrap serverBootstrap = new ServerBootstrap();
            serverBootstrap.group(bossGroup, workerGroup);
            serverBootstrap.channel(NioServerSocketChannel.class);



            serverBootstrap.childHandler(new ChannelInitializer() {
                @Override
                protected void initChannel(SocketChannel ch) throws Exception {
                    ChannelPipeline pipeline = ch.pipeline();
                    pipeline.addLast(MarshallingCodeCFactory.buildMarshallingDecoder());
                    pipeline.addLast(MarshallingCodeCFactory.buildMarshallingEncoder());



                    pipeline.addLast(new MyObjectServerHandler());
                }
            });

            ChannelFuture channelFuture = serverBootstrap.bind(new InetSocketAddress(8899))
                    .sync();
            channelFuture.channel().closeFuture().sync();
        } catch (Exception ex){
            System.out.println(ex.getMessage());
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }

    }
}

四、客户端handler和启动类：

package cn.edu.tju;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

public class MyObjectClientHandler extends ChannelInboundHandlerAdapter {
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("channel active......");
        UserRequest userRequest = new UserRequest();
        userRequest.setUsername("amadeus liu");
        userRequest.setPassword("123456");
        ctx.writeAndFlush(userRequest);
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        System.out.println("client received message......");
        UserResponse userResponse = (UserResponse) msg;
        System.out.println(userResponse);
    }
}

package cn.edu.tju;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
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.codec.string.StringEncoder;

import java.net.InetSocketAddress;

public class NettyTcpObjectClient2 {
    public static void main(String[] args) throws Exception {
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap bootStrap = new Bootstrap();

            bootStrap.group(group);
            bootStrap.channel(NioSocketChannel.class);
            bootStrap.handler(new ChannelInitializer() {
                @Override
                protected void initChannel(SocketChannel ch) throws Exception {
                    ChannelPipeline pipeline = ch.pipeline();
                    pipeline.addLast(MarshallingCodeCFactory.buildMarshallingDecoder());
                    pipeline.addLast(MarshallingCodeCFactory.buildMarshallingEncoder());
                    pipeline.addLast(new MyObjectClientHandler());
                }
            });
            ChannelFuture channelFuture = bootStrap.connect(new InetSocketAddress(8899)).sync();
            channelFuture.channel().closeFuture().sync();
        }catch (Exception ex){
            System.out.println(ex.getMessage());
            group.shutdownGracefully();
        }

    }
}