新增SOCKET
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23
cloud-common-socket/pom.xml
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23
cloud-common-socket/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>cm-cloud</artifactId>
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<groupId>com.cm</groupId>
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<version>1.0.1-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>cloud-common-socket</artifactId>
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<dependencies>
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<dependency>
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<groupId>io.netty</groupId>
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<artifactId>netty-all</artifactId>
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<version>4.1.50.Final</version>
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</dependency>
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</dependencies>
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</project>
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74
cloud-common-socket/src/main/java/com/cm/socket/Client.java
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74
cloud-common-socket/src/main/java/com/cm/socket/Client.java
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package com.cm.socket;
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import com.cm.socket.decoder.MessageDecoder;
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import com.cm.socket.encoder.MessageEncoder;
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import com.cm.socket.pojo.Message;
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import io.netty.bootstrap.Bootstrap;
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import io.netty.channel.*;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.SocketChannel;
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import io.netty.channel.socket.nio.NioSocketChannel;
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/**
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* When you feel like quitting. Think about why you started
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* 当你想要放弃的时候，想想当初你为何开始
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*
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* @ClassName: Client
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* @Description:
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* @Author: WangGeng
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* @Date: 2020/7/4 18:20
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* @Version: 1.0
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**/
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public class Client {
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public static void main(String[] args) {
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EventLoopGroup eventLoopGroup = new NioEventLoopGroup();
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Bootstrap bootstrap = new Bootstrap();
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final int[] sendCount = {0};
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try {
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bootstrap.group(eventLoopGroup);
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bootstrap.channel(NioSocketChannel.class);
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bootstrap.option(ChannelOption.SO_KEEPALIVE, true);
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bootstrap.handler(new ChannelInitializer<SocketChannel>() {
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@Override
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protected void initChannel(SocketChannel ch) throws Exception {
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ch.pipeline().addLast(new MessageEncoder());
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ch.pipeline().addLast(new MessageDecoder());
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ch.pipeline().addLast(new SimpleChannelInboundHandler<Message>() {
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@Override
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protected void channelRead0(ChannelHandlerContext ctx, Message msg) throws Exception {
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System.out.println(msg.getContent());
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if(sendCount[0] < 4) {
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Thread.sleep(5000);
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Message message = new Message();
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message.setStart((byte) 0x01);
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message.setType((byte) 0x02);
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message.setContent("你好服务器"+ sendCount[0] +"!");
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ctx.channel().writeAndFlush(message);
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sendCount[0]++;
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}
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
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cause.printStackTrace();
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ctx.close();
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}
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});
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}
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});
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ChannelFuture channelFuture = bootstrap.connect("localhost", 9999).sync();
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Message message = new Message();
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message.setStart((byte) 0x01);
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message.setType((byte) 0x02);
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message.setContent("你好服务器!");
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channelFuture.channel().writeAndFlush(message);
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channelFuture.channel().closeFuture().sync();
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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eventLoopGroup.shutdownGracefully();
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}
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}
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}
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package com.cm.socket.decoder;
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import com.cm.socket.pojo.Message;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.ByteToMessageDecoder;
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import java.nio.charset.Charset;
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import java.util.List;
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/**
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* When you feel like quitting. Think about why you started
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* 当你想要放弃的时候，想想当初你为何开始
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*
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* @ClassName: MessageDecoder
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* @Description: 消息解码器
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* @Author: WangGeng
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* @Date: 2020/7/4 16:11
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* @Version: 1.0
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**/
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public class MessageDecoder extends ByteToMessageDecoder {
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/**
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* 头部长度 1byte + 1byte + 4byte
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*/
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private static final int HEADER_LENGTH = 6;
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@Override
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protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
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if (in.readableBytes() < HEADER_LENGTH) {
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return;
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}
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in.markReaderIndex();
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byte start = in.readByte();
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byte type = in.readByte();
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// 消息体长度
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int contentBytesLength = in.readInt();
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if (contentBytesLength <= 0) {
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return;
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}
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if (in.readableBytes() < contentBytesLength) {
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in.resetReaderIndex();
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return;
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}
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byte[] contentBytes = new byte[contentBytesLength];
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in.readBytes(contentBytes);
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Message message = new Message();
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message.setStart(start);
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message.setType(type);
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message.setContent(new String(contentBytes, Charset.forName("UTF-8")));
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out.add(message);
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}
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}
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package com.cm.socket.encoder;
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import com.cm.socket.pojo.Message;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.MessageToByteEncoder;
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import java.nio.charset.Charset;
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/**
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* When you feel like quitting. Think about why you started
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* 当你想要放弃的时候，想想当初你为何开始
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*
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* @ClassName: MessageEncoder
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* @Description: 消息编码器
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* @Author: WangGeng
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* @Date: 2020/7/4 15:55
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* @Version: 1.0
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**/
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public class MessageEncoder extends MessageToByteEncoder<Message> {
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@Override
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protected void encode(ChannelHandlerContext ctx, Message msg, ByteBuf out) throws Exception {
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byte[] contentBytes = msg.getContent().getBytes(Charset.forName("UTF-8"));
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out.writeByte(msg.getStart());
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out.writeByte(msg.getType());
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out.writeInt(contentBytes.length);
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out.writeBytes(contentBytes);
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}
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}
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@ -0,0 +1,43 @@
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package com.cm.socket.pojo;
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/**
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* When you feel like quitting. Think about why you started
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* 当你想要放弃的时候，想想当初你为何开始
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*
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* @ClassName: Message
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* @Description: 消息
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* @Author: WangGeng
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* @Date: 2020/7/4 15:56
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* @Version: 1.0
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**/
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public class Message {
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private byte start;
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private byte type;
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private String content;
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public byte getStart() {
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return start;
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}
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public void setStart(byte start) {
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this.start = start;
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}
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public byte getType() {
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return type;
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}
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public void setType(byte type) {
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this.type = type;
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}
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public String getContent() {
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return content == null ? "" : content.trim();
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}
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public void setContent(String content) {
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this.content = content;
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}
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}
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