spring+netty服务器搭建的方法
作者：病毒先生
本篇文章主要介绍了spring+netty服务器搭建的方法，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧
游戏一般是长连接，自定义协议，不用http协议，BIO,NIO,AIO这些我就不说了，自己查资料
我现在用spring+netty搭起简单的游戏服
思路：1自定义协议和协议包；2spring+netty整合；3半包粘包处理，心跳机制等；4请求分发（目前自己搞的都是单例模式）
下个是测试用的，结构如下
首先自定义包头
Header.java
package com.test.netty.message;
/**
* Header.java
* 自定义协议包头
* @author janehuang
* @version 1.0
*/
public class Header {
private byte tag;
/* 编码*/
private byte encode;
/*加密*/
private byte encrypt;
/*其他字段*/
private byte extend1;
/*其他2*/
private byte extend2;
/*会话id*/
private String sessionid;
/*包的长度*/
private int length = 1024;
/*命令*/
private int cammand;
public Header() {
}
public Header(String sessionid) {
this.encode = 0;
this.encrypt = 0;
this.sessionid = sessionid;
}
public Header(byte tag, byte encode, byte encrypt, byte extend1, byte extend2, String sessionid, int length, int cammand) {
this.tag = tag;
this.encode = encode;
this.encrypt = encrypt;
this.extend1 = extend1;
this.extend2 = extend2;
this.sessionid = sessionid;
this.length = length;
this.cammand = cammand;
}
@Override
public String toString() {
return "header [tag=" + tag + "encode=" + encode + ",encrypt=" + encrypt + ",extend1=" + extend1 + ",extend2=" + extend2 + ",sessionid=" + sessionid + ",length=" + length + ",cammand="
+ cammand + "]";
}
public byte getTag() {
return tag;
}
public void setTag(byte tag) {
this.tag = tag;
}
public byte getEncode() {
return encode;
}
public void setEncode(byte encode) {
this.encode = encode;
}
public byte getEncrypt() {
return encrypt;
}
public void setEncrypt(byte encrypt) {
this.encrypt = encrypt;
}
public byte getExtend1() {
return extend1;
}
public void setExtend1(byte extend1) {
this.extend1 = extend1;
}
public byte getExtend2() {
return extend2;
}
public void setExtend2(byte extend2) {
this.extend2 = extend2;
}
public String getSessionid() {
return sessionid;
}
public void setSessionid(String sessionid) {
this.sessionid = sessionid;
}
public int getLength() {
return length;
}
public void setLength(int length) {
this.length = length;
}
public int getCammand() {
return cammand;
}
public void setCammand(int cammand) {
this.cammand = cammand;
}
}
包体，我简单处理用字符串转字节码，一般好多游戏用probuf系列化成二进制
Message.java
package com.test.netty.message;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import com.test.netty.decoder.MessageDecoder;
/**
* Message.java
*
* @author janehuang
* @version 1.0
*/
public class Message {
private Header header;
private String data;
public Header getHeader() {
return header;
}
public void setHeader(Header header) {
this.header = header;
}
public String getData() {
return data;
}
public void setData(String data) {
this.data = data;
}
public Message(Header header) {
this.header = header;
}
public Message(Header header, String data) {
this.header = header;
this.data = data;
}
public byte[] toByte() {
ByteArrayOutputStream out = new ByteArrayOutputStream();
out.write(MessageDecoder.PACKAGE_TAG);
out.write(header.getEncode());
out.write(header.getEncrypt());
out.write(header.getExtend1());
out.write(header.getExtend2());
byte[] bb = new byte[32];
byte[] bb2 = header.getSessionid().getBytes();
for (int i = 0; i < bb2.length; i++) {
bb[i] = bb2[i];
}
try {
out.write(bb);
byte[] bbb = data.getBytes("UTF-8");
out.write(intToBytes2(bbb.length));
out.write(intToBytes2(header.getCammand()));
out.write(bbb);
out.write('\n');
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return out.toByteArray();
}
public static byte[] intToByte(int newint) {
byte[] intbyte = new byte[4];
intbyte[3] = (byte) ((newint >> 24) & 0xFF);
intbyte[2] = (byte) ((newint >> 16) & 0xFF);
intbyte[1] = (byte) ((newint >> 8) & 0xFF);
intbyte[0] = (byte) (newint & 0xFF);
return intbyte;
}
public static int bytesToInt(byte[] src, int offset) {
int value;
value = (int) ((src[offset] & 0xFF) | ((src[offset + 1] & 0xFF) << 8) | ((src[offset + 2] & 0xFF) << 16) | ((src[offset + 3] & 0xFF) << 24));
return value;
}
public static byte[] intToBytes2(int value) {
byte[] src = new byte[4];
src[0] = (byte) ((value >> 24) & 0xFF);
src[1] = (byte) ((value >> 16) & 0xFF);
src[2] = (byte) ((value >> 8) & 0xFF);
src[3] = (byte) (value & 0xFF);
return src;
}
public static void main(String[] args) {
ByteBuf heapBuffer = Unpooled.buffer(8);
System.out.println(heapBuffer);
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
out.write(intToBytes2(1));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
byte[] data = out.toByteArray();
heapBuffer.writeBytes(data);
System.out.println(heapBuffer);
int a = heapBuffer.readInt();
System.out.println(a);
}
}
解码器
MessageDecoder.java
package com.test.netty.decoder;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.CorruptedFrameException;
import java.util.List;
import com.test.netty.message.Header;
import com.test.netty.message.Message;
/**
* HeaderDecoder.java
*
* @author janehuang
* @version 1.0
*/
public class MessageDecoder extends ByteToMessageDecoder {
/**包长度志头**/
public static final int HEAD_LENGHT = 45;
/**标志头**/
public static final byte PACKAGE_TAG = 0x01;
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf buffer, List<Object> out) throws Exception {
buffer.markReaderIndex();
if (buffer.readableBytes() < HEAD_LENGHT) {
throw new CorruptedFrameException("包长度问题");
}
byte tag = buffer.readByte();
if (tag != PACKAGE_TAG) {
throw new CorruptedFrameException("标志错误");
}
byte encode = buffer.readByte();
byte encrypt = buffer.readByte();
byte extend1 = buffer.readByte();
byte extend2 = buffer.readByte();
byte sessionByte[] = new byte[32];
buffer.readBytes(sessionByte);
String sessionid = new String(sessionByte,"UTF-8");
int length = buffer.readInt();
int cammand=buffer.readInt();
Header header = new Header(tag,encode, encrypt, extend1, extend2, sessionid, length, cammand);
byte[] data=new byte[length];
buffer.readBytes(data);
Message message = new Message(header,new String(data,"UTF-8"));
out.add(message);
}
}
编码器
MessageEncoder.java
package com.test.netty.encoder;
import com.test.netty.decoder.MessageDecoder;
import com.test.netty.message.Header;
import com.test.netty.message.Message;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;
/**
* MessageEncoder.java
*
* @author janehuang
* @version 1.0
*/
public class MessageEncoder extends MessageToByteEncoder<Message> {
@Override
protected void encode(ChannelHandlerContext ctx, Message msg, ByteBuf out) throws Exception {
Header header = msg.getHeader();
out.writeByte(MessageDecoder.PACKAGE_TAG);
out.writeByte(header.getEncode());
out.writeByte(header.getEncrypt());
out.writeByte(header.getExtend1());
out.writeByte(header.getExtend2());
out.writeBytes(header.getSessionid().getBytes());
out.writeInt(header.getLength());
out.writeInt(header.getCammand());
out.writeBytes(msg.getData().getBytes("UTF-8"));
}
}
服务器
TimeServer.java
package com.test.netty.server;
import org.springframework.stereotype.Component;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
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.LineBasedFrameDecoder;
import com.test.netty.decoder.MessageDecoder;
import com.test.netty.encoder.MessageEncoder;
import com.test.netty.handler.ServerHandler;
/**
* ChatServer.java
*
* @author janehuang
* @version 1.0
*/
@Component
public class TimeServer {
private int port=88888;
public void run() throws InterruptedException {
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
ByteBuf heapBuffer = Unpooled.buffer(8);
heapBuffer.writeBytes("\r".getBytes());
try {
ServerBootstrap b = new ServerBootstrap(); // (2)
b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class) // (3)
.childHandler(new ChannelInitializer<SocketChannel>() { // (4)
@Override
public void initChannel(SocketChannel ch) throws Exception {
ch.pipeline().addLast("encoder", new MessageEncoder()).addLast("decoder", new MessageDecoder()).addFirst(new LineBasedFrameDecoder(65535))
.addLast(new ServerHandler());
}
}).option(ChannelOption.SO_BACKLOG, 1024) // (5)
.childOption(ChannelOption.SO_KEEPALIVE, true); // (6)
ChannelFuture f = b.bind(port).sync(); // (7)
f.channel().closeFuture().sync();
} finally {
workerGroup.shutdownGracefully();
bossGroup.shutdownGracefully();
}
}
public void start(int port) throws InterruptedException{
this.port=port;
this.run();
}
}
处理器并分发
ServerHandler.java
package com.test.netty.handler;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import com.test.netty.invote.ActionMapUtil;
import com.test.netty.message.Header;
import com.test.netty.message.Message;
/**
*
* @author janehuang
*
*/
public class ServerHandler extends ChannelHandlerAdapter {
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
String content="我收到连接";
Header header=new Header((byte)0, (byte)1, (byte)1, (byte)1, (byte)0, "713f17ca614361fb257dc6741332caf2",content.getBytes("UTF-8").length, 1);
Message message=new Message(header,content);
ctx.writeAndFlush(message);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.close();
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
Message m = (Message) msg; // (1)
/* 请求分发*/
ActionMapUtil.invote(header.getCammand(),ctx, m);
}
}
分发工具类
ActionMapUtil.java
package com.test.netty.invote;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
public class ActionMapUtil {
private static Map<Integer, Action> map = new HashMap<Integer, Action>();
public static Object invote(Integer key, Object... args) throws Exception {
Action action = map.get(key);
if (action != null) {
Method method = action.getMethod();
try {
return method.invoke(action.getObject(), args);
} catch (Exception e) {
throw e;
}
}
return null;
}
public static void put(Integer key, Action action) {
map.put(key, action);
}
}
为分发创建的对象
Action.java
package com.test.netty.invote;
import java.lang.reflect.Method;
public class Action {
private Method method;
private Object object;
public Method getMethod() {
return method;
}
public void setMethod(Method method) {
this.method = method;
}
public Object getObject() {
return object;
}
public void setObject(Object object) {
this.object = object;
}
}
自定义注解，类似springmvc 里面的@Controller
NettyController.java
package com.test.netty.core;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.springframework.stereotype.Component;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Documented
@Component
public @interface NettyController {
}
类型spring mvc里面的@ReqestMapping
ActionMap.java
package com.test.netty.core;
import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@Documented
public @interface ActionMap {
int key();
}
加了这些注解是为了spring初始化bean后把这些对象存到容器,此bean需要在spring配置，spring bean 实例化后会调用
ActionBeanPostProcessor.java
package com.test.netty.core;
import java.lang.reflect.Method;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import com.test.netty.invote.Action;
import com.test.netty.invote.ActionMapUtil;
public class ActionBeanPostProcessor implements BeanPostProcessor {
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
Method[] methods=bean.getClass().getMethods();
for (Method method : methods) {
ActionMap actionMap=method.getAnnotation(ActionMap.class);
if(actionMap!=null){
Action action=new Action();
action.setMethod(method);
action.setObject(bean);
ActionMapUtil.put(actionMap.key(), action);
}
}
return bean;
}
}
controller实例
UserController.java
package com.test.netty.controller;
import io.netty.channel.ChannelHandlerContext;
import org.springframework.beans.factory.annotation.Autowired;
import com.test.model.UserModel;
import com.test.netty.core.ActionMap;
import com.test.netty.core.NettyController;
import com.test.netty.message.Message;
import com.test.service.UserService;
@NettyController()
public class UserAction {
@Autowired
private UserService userService;
@ActionMap(key=1)
public String login(ChannelHandlerContext ct,Message message){
UserModel userModel=this.userService.findByMasterUserId(1000001);
System.out.println(String.format("用户昵称:%s;密码%d;传人内容%s", userModel.getNickname(),userModel.getId(),message.getData()));
return userModel.getNickname();
}
}
applicationContext.xml配置文件记得加入这个
<bean class="com.test.netty.core.ActionBeanPostProcessor"/>
测试代码
package test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.test.netty.server.TimeServer;
public class Test {
public static void main(String[] args) {
ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
TimeServer timeServer= ac.getBean(TimeServer.class);
try {
timeServer.start(8888);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
测试开关端
package test;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Scanner;
import com.test.netty.message.Header;
import com.test.netty.message.Message;
public class ClientTest {
public static void main(String[] args) {
try {
// 连接到服务器
Socket socket = new Socket("127.0.0.1", 8888);
try {
// 向服务器端发送信息的DataOutputStream
OutputStream out = socket.getOutputStream();
// 装饰标准输入流，用于从控制台输入
Scanner scanner = new Scanner(System.in);
while (true) {
String send = scanner.nextLine();
System.out.println("客户端：" + send);
byte[] by = send.getBytes("UTF-8");
Header header = new Header((byte) 1, (byte) 1, (byte) 1, (byte) 1, (byte) 1, "713f17ca614361fb257dc6741332caf2", by.length, 1);
Message message = new Message(header, send);
out.write(message.toByte());
out.flush();
// 把从控制台得到的信息传送给服务器
// out.writeUTF("客户端：" + send);
// 读取来自服务器的信息
}
} finally {
socket.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
测试结果，ok了
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。