5、netty-java序列化(netty学习笔记)

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一：java序列化的缺点

1、无法跨语言。

2、序列化后的码流太大。

3、序列化性能提低。

Netty 对Pojo对象序列化.

Model

package com.play.netty.serializable.model;

import java.io.Serializable;

/**
* Created by IntelliJ IDEA.
* User: GongQi
* Date: 2017/9/15
*/
public class MsgReq implements Serializable {

    private static final long serialVersionUID=1L;

    private int reqId;

    private String userName;

    private String productname;

    private String phoneNo;

    public int getReqId() {
        return reqId;
    }

    public void setReqId(int reqId) {
        this.reqId = reqId;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getProductname() {
        return productname;
    }

    public void setProductname(String productname) {
        this.productname = productname;
    }

    public String getPhoneNo() {
        return phoneNo;
    }

    public void setPhoneNo(String phoneNo) {
        this.phoneNo = phoneNo;
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder("MsgReq{");
        sb.append("reqId=").append(reqId);
        sb.append(", userName='").append(userName).append('\'');
        sb.append(", productname='").append(productname).append('\'');
        sb.append(", phoneNo='").append(phoneNo).append('\'');
        sb.append('}');
        return sb.toString();
    }
}

package com.play.netty.serializable.model;

import java.io.Serializable;

/**
* Created by IntelliJ IDEA.
* User: GongQi
* Date: 2017/9/15
*/
public class MsgResp implements Serializable {
    private static final long serialVersionUID=1L;

    private String code;

    private String msg;

    private String productmsg;

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public String getProductmsg() {
        return productmsg;
    }

    public void setProductmsg(String productmsg) {
        this.productmsg = productmsg;
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder("MsgResp{");
        sb.append("code='").append(code).append('\'');
        sb.append(", msg='").append(msg).append('\'');
        sb.append(", productmsg='").append(productmsg).append('\'');
        sb.append('}');
        return sb.toString();
    }
}

Server

package com.play.netty.serializable.server;

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;

/**
* Created by IntelliJ IDEA.
* User: GongQi
* Date: 2017/9/15
*/
public class SeriMsgServer {

    public void bind(Integer port) throws InterruptedException {

        EventLoopGroup bossGrop = new NioEventLoopGroup();
        EventLoopGroup workGrop = new NioEventLoopGroup();

        try {
            ServerBootstrap bootstrap = new ServerBootstrap();
            bootstrap.group(bossGrop, workGrop)
                    .channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 100)
                    .childHandler(new ChannelInitializer<SocketChannel>() {
                        protected void initChannel(SocketChannel socketChannel) throws Exception {
                            socketChannel.pipeline().addLast(
                                    new ObjectDecoder(1024 * 1024,
                                            ClassResolvers.weakCachingConcurrentResolver(
                                                    this.getClass().getClassLoader()
                                            )));
                            //
                            socketChannel.pipeline().addLast(new ObjectEncoder());
                            socketChannel.pipeline().addLast(new SeriMsgServerHandler());
                        }
                    });

            //
            ChannelFuture channelFuture = bootstrap.bind(port).sync();

            channelFuture.channel().closeFuture().sync();
        } finally {
            bossGrop.shutdownGracefully();
            workGrop.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws InterruptedException {
        new SeriMsgServer().bind(7001);
    }
}

package com.play.netty.serializable.server;

import com.play.netty.serializable.model.MsgReq;
import com.play.netty.serializable.model.MsgResp;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

/**
* Created by IntelliJ IDEA.
* User: GongQi
* Date: 2017/9/15
*/
public class SeriMsgServerHandler extends ChannelHandlerAdapter {

    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        MsgReq  req= (MsgReq) msg;
        MsgResp msgResp=new MsgResp();
        if(req!=null){
            System.out.println(String.format("收到的信息为[%s]",req.toString()));

        msgResp.setCode("OK200");
        msgResp.setMsg("交互成功");
        msgResp.setProductmsg("当前产品编号"+req.getReqId()+"");
        }
        //
        ctx.writeAndFlush(msgResp);
    }
}

client

package com.play.netty.serializable.client;

import io.netty.bootstrap.Bootstrap;
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.NioSocketChannel;
import io.netty.handler.codec.serialization.ClassResolvers;
import io.netty.handler.codec.serialization.ObjectDecoder;
import io.netty.handler.codec.serialization.ObjectEncoder;

/**
* Created by IntelliJ IDEA.
* User: GongQi
* Date: 2017/9/15
*/
public class SeriMsgClient {

    public void connect(String host, Integer port) throws InterruptedException {
        EventLoopGroup group = new NioEventLoopGroup();

        try {
            Bootstrap bootstrap = new Bootstrap();
            bootstrap.group(group).channel(NioSocketChannel.class)
                    .option(ChannelOption.TCP_NODELAY, true)
                    .handler(new ChannelInitializer<SocketChannel>() {

                        protected void initChannel(SocketChannel socketChannel) throws Exception {
                            socketChannel.pipeline().addLast(new ObjectDecoder(
                                    1024, ClassResolvers.cacheDisabled(
                                    this.getClass().getClassLoader()
                            )));
                            socketChannel.pipeline().addLast(new ObjectEncoder());
                            socketChannel.pipeline().addLast(new SeriMsgClientHandler());
                        }
                    });

            ChannelFuture channelFuture = bootstrap.connect(host, port).sync();

            channelFuture.channel().closeFuture().sync();
        } finally {
            group.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws InterruptedException {
        new SeriMsgClient().connect("127.0.0.1", 7001);
    }
}

package com.play.netty.serializable.client;

import com.play.netty.serializable.model.MsgReq;
import com.sun.scenario.effect.impl.sw.sse.SSEBlend_SRC_OUTPeer;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

/**
* Created by IntelliJ IDEA.
* User: GongQi
* Date: 2017/9/15
*/
public class SeriMsgClientHandler extends ChannelHandlerAdapter {

    public void channelActive(ChannelHandlerContext ctx) throws Exception {
      for(int i=0;i<10;i++){
          ctx.write(subreq(i));
      }
      ctx.flush();
    }

    private MsgReq subreq(Integer integer){
        MsgReq req=new MsgReq();
        req.setPhoneNo("12345"+integer);
        req.setProductname("xiaohua");
        req.setReqId(integer);

        return req;
    }

    public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
        ctx.flush();
    }

    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        ctx.close();
    }

    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        System.out.println("收到数据"+msg);
    }
}