Netty-Socketio整合Spring Cloud Gateway
首先搭建一个Netty-Socketio服务器
基于SpringBoot添加以下依赖：
<dependency>
<groupId>com.corundumstudio.socketio</groupId>
<artifactId>netty-socketio</artifactId>
<version>1.7.11</version>
</dependency>
编写启动类：
@SpringBootApplication
@Order(1)
public class ChatApplication implements CommandLineRunner {
private SocketIOServer server;
public static void main(String[] args){
SpringApplication.run(ChatApplication.class,args);
}
@Bean
public SocketIOServer socketIOServer() {
Configuration config = new Configuration();
config.setPort(8083); //Netty-Socketio服务器端口
this.server = new SocketIOServer(config);
return server;
}
@Bean
public SpringAnnotationScanner springAnnotationScanner(SocketIOServer socketServer) {
return new SpringAnnotationScanner(socketServer);
}
@Override
public void run(String... args) throws Exception {
server.start();
}
}
编写实体类：
public class MessageEntity {
private String message;
private String username;
//...此处省略set和get方法
}
编写MessageEventHandler：
@Component
public class MessageEventHandler {
public static SocketIOServer socketIoServer;
private Map<UUID,String> clientMap = new ConcurrentHashMap<>(16);
@Autowired
public MessageEventHandler(SocketIOServer server) {
MessageEventHandler.socketIoServer = server;
}
@OnConnect
public void onConnect(SocketIOClient client) {
UUID socketSessionId = client.getSessionId(); //获取SessionId
String ip = client.getRemoteAddress().toString(); //获取Ip
clientMap.put(socketSessionId,ip); //添加到客户端map
client.sendEvent("getip",ip); //发送客户端ip给前端
//发送上线通知给所有用户
clientMap.forEach((k,v)-> socketIoServer.getClient(k).sendEvent("refresh",clientMap.values()));
}
@OnDisconnect
public void onDisconnect(SocketIOClient client) {
UUID socketSessionId = client.getSessionId(); //获取SessionId
String ip = client.getRemoteAddress().toString(); //获取Ip
clientMap.remove(socketSessionId); //从客户端map中移除
//发送下线通知给所有用户
clientMap.forEach((k,v)-> socketIoServer.getClient(k).sendEvent("refresh",clientMap.values()));
}
@OnEvent("message")
public void message(SocketIOClient client, AckRequest request, MessageEntity message){
message.setUsername(client.getRemoteAddress().toString());
clientMap.forEach((k,v)-> socketIoServer.getClient(k).sendEvent("receiveMsg",message));
}
编写前端页面：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>NETTY SOCKET.IO DEMO</title>
<base>
<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<script src="https://cdn.bootcss.com/socket.io/2.2.0/socket.io.js"></script>
<style>
body {
padding:20px;
}
#console {
overflow: auto;
}
</style>
</head>
<body>
<div id="console">未连接</div><br/>
ip:<div id="myip"></div>
<br/>
<div style="float: left;">
<div style="width: 500px;height: 300px;border:1px solid black;overflow-y:auto;"><div id = "view"></div></div>
<input type="text" id="message"/>
<input type="submit" id="submit" onclick="send()"/>
<button onclick="connect(this)">上线</button>
</div>
<div style="float: left;margin-left: 30px">在线用户：<br>
<ul id="all_users">
</ul>
</div>
</body>
<script type="text/javascript">
var socket;
var ip = null;
// 获取当前时间
function NowTime() {
var time=new Date();
var year=time.getFullYear();//获取年
var month=time.getMonth()+1;//或者月
var day=time.getDate();//或者天
var hour=time.getHours();//获取小时
var minu =time.getMinutes();//获取分钟
var second=time.getSeconds();//或者秒
var data=year+"-";
if(month<10){
data+="0";
}
data+=month+"-";
if(day<10){
data+="0"
}
data+=day+" ";
if(hour<10){
data+="0"
}
data+=hour+":";
if(minu<10){
data+="0"
}
data+=minu+":";
if(second<10){
data+="0"
}
data+=second;
return data;
}
function connect(btn) {
//这里填写之前设置的Netty-Socketio服务器端口，整合网关后需要把这里的8083端口改成网关的端口
socket = io.connect('http://localhost:8083', {
transports:['websocket']
});
socket.on('connect', function(data) {
$('#console').text(NowTime() +"客户端连接到服务端");
});
socket.on('getip',function (data) {
$('#myip').text(data);
ip = data;
});
socket.on('receiveMsg', function(data) {
var element = $(""
+data.username+":"+data.message+"");
$('#view').prepend(element);
});
socket.on('refresh', function(data) {
$('#all_users').html("");
for (var i = 0;i < data.length;i++){
var element = $("" +data[i]+"");
$('#all_users').append(element);
}
});
$(btn).text("下线");
$(btn).attr("onclick","disconnect(this)");
}
function disconnect(btn) {
socket.disconnect();
$('#console').text("未连接");
$('#myip').text("");
$("#all_users").html("");
$(btn).text("上线");
$(btn).attr("onclick","connect(this)");
}
function send() {
socket.emit('message',{message:$("#message").val()});
}
</script>
</html>
搭建一个简单的Spring Cloud Gateway项目
pom文件内容：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>spring-cloud-gateway-example</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-cloud-gateway-example</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.RELEASE</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.youyuan.core.customer</groupId>
<artifactId>log4j2</artifactId>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
</project>
编写启动类：
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
application.yml文件内容：
spring:
cloud:
gateway:
routes:
- predicates:
- Path=/socket.io/**
uri: "http://localhost:8083/"