SpringBoot 整合 Socket 实战案例
大约 7 分钟约 1972 字
SpringBoot 整合 Socket 实战案例
功能场景点
- 群发,所有人都能收到
- 局部群发,部分人群都能收到
- 单点推送, 指定某个人的页面
惯例,先看看本次实战示例项目结构:
可以看到内容不多,也就是说,springboot 整合 socket, 跟着我学,轻轻松松。
不多说,开始:
① pom 引入核心依赖
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.75</version>
</dependency>
<dependency>
<groupId>com.corundumstudio.socketio</groupId>
<artifactId>netty-socketio</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
② yml 加上配置项
server:
port: 8089
socketio:
host: localhost
port: 8503
maxFramePayloadLength: 1048576
maxHttpContentLength: 1048576
bossCount: 1
workCount: 100
allowCustomRequests: true
upgradeTimeout: 10000
pingTimeout: 60000
pingInterval: 25000
③ 创建 socket 配置加载类 MySocketConfig.java
import com.corundumstudio.socketio.SocketConfig;
import com.corundumstudio.socketio.SocketIOServer;
import com.corundumstudio.socketio.annotation.SpringAnnotationScanner;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* @Author: JCccc
* @Description:
* @Date: 2022/06/13 21:50
*/
@Configuration
public class MySocketConfig{
@Value("${socketio.host}")
private String host;
@Value("${socketio.port}")
private Integer port;
@Value("${socketio.bossCount}")
private int bossCount;
@Value("${socketio.workCount}")
private int workCount;
@Value("${socketio.allowCustomRequests}")
private boolean allowCustomRequests;
@Value("${socketio.upgradeTimeout}")
private int upgradeTimeout;
@Value("${socketio.pingTimeout}")
private int pingTimeout;
@Value("${socketio.pingInterval}")
private int pingInterval;
@Bean
public SocketIOServer socketIOServer() {
SocketConfig socketConfig = new SocketConfig();
socketConfig.setTcpNoDelay(true);
socketConfig.setSoLinger(0);
com.corundumstudio.socketio.Configuration config = new com.corundumstudio.socketio.Configuration();
buildSocketConfig(socketConfig, config);
return new SocketIOServer(config);
}
/**
* 扫描netty-socketIo的注解( @OnConnect、@OnEvent等)
*/
@Bean
public SpringAnnotationScanner springAnnotationScanner() {
return new SpringAnnotationScanner(socketIOServer());
}
private void buildSocketConfig(SocketConfig socketConfig, com.corundumstudio.socketio.Configuration config) {
config.setSocketConfig(socketConfig);
config.setHostname(host);
config.setPort(port);
config.setBossThreads(bossCount);
config.setWorkerThreads(workCount);
config.setAllowCustomRequests(allowCustomRequests);
config.setUpgradeTimeout(upgradeTimeout);
config.setPingTimeout(pingTimeout);
config.setPingInterval(pingInterval);
}
}
④创建消息实体 MyMessage.java
/**
* @Author: JCccc
* @Date: 2022-07-23 9:05
* @Description:
*/
public class MyMessage {
private String type;
private String content;
private String from;
private String to;
private String channel;
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public String getFrom() {
return from;
}
public void setFrom(String from) {
this.from = from;
}
public String getTo() {
return to;
}
public void setTo(String to) {
this.to = to;
}
public String getChannel() {
return channel;
}
public void setChannel(String channel) {
this.channel = channel;
}
}
代码简析:
⑤创建 socket handler 负责记录客户端 连接、下线
MySocketHandler.java
import com.corundumstudio.socketio.SocketIOClient;
import com.corundumstudio.socketio.SocketIOServer;
import com.corundumstudio.socketio.annotation.OnConnect;
import com.corundumstudio.socketio.annotation.OnDisconnect;
import com.socket.mysocket.util.SocketUtil;
import org.springframework.beans.factory.annotation.Autowired;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
/**
* @Author: JCccc
* @Description:
* @Date: 2022/6/23 21:21
*/
@Component
public class MySocketHandler {
private final Logger log = LoggerFactory.getLogger(this.getClass());
@Autowired
private SocketIOServer socketIoServer;
@PostConstruct
private void start(){
try {
socketIoServer.start();
}catch (Exception e){
e.printStackTrace();
}
}
@PreDestroy
private void destroy(){
try {
socketIoServer.stop();
}catch (Exception e){
e.printStackTrace();
}
}
@OnConnect
public void connect(SocketIOClient client) {
String userFlag = client.getHandshakeData().getSingleUrlParam("userFlag");
SocketUtil.connectMap.put(userFlag, client);
log.info("客户端userFlag: "+ userFlag+ "已连接");
}
@OnDisconnect
public void onDisconnect(SocketIOClient client) {
String userFlag = client.getHandshakeData().getSingleUrlParam("userFlag");
log.info("客户端userFlag:" + userFlag + "断开连接");
SocketUtil.connectMap.remove(userFlag, client);
}
}
代码简析:
⑥ 封装的 socket 小函数
SocketUtil.java
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.corundumstudio.socketio.AckRequest;
import com.corundumstudio.socketio.SocketIOClient;
import com.corundumstudio.socketio.annotation.OnEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
/**
* @Author: JCccc
* @Description:
* @Date: 2022/6/23 21:28
*/
@Component
public class SocketUtil {
private final Logger log = LoggerFactory.getLogger(this.getClass());
//暂且把用户&客户端信息存在缓存
public static ConcurrentMap<String, SocketIOClient> connectMap = new ConcurrentHashMap<>();
@OnEvent(value = "CHANNEL_SYSTEM")
public void systemDataListener(String receiveMsg) {
if (!StringUtils.hasLength(receiveMsg)){
return;
}
JSONObject msgObject = (JSONObject) JSON.parse(receiveMsg);
String userFlag = String.valueOf(msgObject.get("from"));
String content = String.valueOf(msgObject.get("content"));
log.info("收到用户 : {} 推送到系统频道的一条消息 :{}",userFlag,content );
}
public void sendToAll(Map<String, Object> msg,String sendChannel) {
if (connectMap.isEmpty()){
return;
}
//给在这个频道的每个客户端发消息
for (Map.Entry<String, SocketIOClient> entry : connectMap.entrySet()) {
entry.getValue().sendEvent(sendChannel, msg);
}
}
public void sendToOne(String userFlag, Map<String, Object> msg,String sendChannel) {
//拿出某个客户端信息
SocketIOClient socketClient = getSocketClient(userFlag);
if (Objects.nonNull(socketClient) ){
//单独给他发消息
socketClient.sendEvent(sendChannel,msg);
}
}
/**
* 识别出客户端
* @param userFlag
* @return
*/
public SocketIOClient getSocketClient(String userFlag){
SocketIOClient client = null;
if (StringUtils.hasLength(userFlag) && !connectMap.isEmpty()){
for (String key : connectMap.keySet()) {
if (userFlag.equals(key)){
client = connectMap.get(key);
}
}
}
return client;
}
}
代码简析:
⑦写 1 个接口,模拟场景,前端页面调用后端接口,做消息推送
TestController.java
import com.socket.mysocket.dto.MyMessage;
import com.socket.mysocket.util.SocketUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.HashMap;
import java.util.Map;
/**
* @Author: JCccc
* @Description:
* @Date: 2022/06/13 21:50
*/
@RestController
public class TestController {
public final static String SEND_TYPE_ALL = "ALL";
public final static String SEND_TYPE_ALONE = "ALONE";
@Autowired
SocketUtil socketUtil;
@PostMapping("/testSendMsg")
public String testSendMsg(@RequestBody MyMessage myMessage){
Map<String, Object> map = new HashMap<>();
map.put("msg",myMessage.getContent());
//群发
if (SEND_TYPE_ALL.equals(myMessage.getType())){
socketUtil.sendToAll( map,myMessage.getChannel());
return "success";
}
//指定单人
if (SEND_TYPE_ALONE.equals(myMessage.getType())){
socketUtil.sendToOne(myMessage.getTo(), map, myMessage.getChannel());
return "success";
}
return "fail";
}
}
代码简析:
好了,7 步了。一切已经就绪了。
前端简单页面
接下来搞点前端 HTML 页面, 玩一玩看看效果:
第一个页面:
TestClientStudentJC.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>我要连SOCKET</title>
<base>
<script src="https://cdn.bootcss.com/jquery/3.4.0/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/socket.io/2.2.0/socket.io.js"></script>
<style>
body {
padding: 20px;
}
#console {
height: 450px;
overflow: auto;
}
.msg-color {
color: green;
}
</style>
</head>
<body>
<div id="console" class="well"></div>
<div id="conversationDiv">
<labal>给系统推消息</labal>
<input type="text" id="content"/>
<button id="btnSendToSystem" onclick="sendSys();">发送</button>
</div>
</body>
<script type="text/javascript">
var socket;
connect();
function connect() {
var userFlag = 'user_JC';
var opts = {
query: 'userFlag=' + userFlag
};
socket = io.connect('http://localhost:8503', opts);
socket.on('connect', function () {
console.log("连接成功");
output('当前用户是:' + userFlag );
output('<span class="msg-color">连接成功了。</span>');
});
socket.on('disconnect', function () {
output('<span class="msg-color">下线了。 </span>');
});
socket.on('CHANNEL_STUDENT', function (data) {
let msg= JSON.stringify(data)
output('收到学生频道消息了:' + msg );
console.log(data);
});
socket.on('CHANNEL_SYSTEM', function (data) {
let msg= JSON.stringify(data)
output('收到系统全局消息了:' + msg );
console.log(data);
});
}
function sendSys() {
console.log('发送消息给服务端');
var content = document.getElementById('content').value;
socket.emit('CHANNEL_SYSTEM',JSON.stringify({
'content': content,
'from': 'user_JC'
}));
}
function output(message) {
var element = $("<div>" + message + "</div>");
$('#console').prepend(element);
}
</script>
</html>
代码简析:
第二个页面,跟第一个基本一样,改一下用户唯一标识:
TestClientStudentPU.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>我要连SOCKET</title>
<base>
<script src="https://cdn.bootcss.com/jquery/3.4.0/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/socket.io/2.2.0/socket.io.js"></script>
<style>
body {
padding: 20px;
}
#console {
height: 450px;
overflow: auto;
}
.msg-color {
color: green;
}
</style>
</head>
<body>
<div id="console" class="well"></div>
<div id="conversationDiv">
<labal>给系统推消息</labal>
<input type="text" id="content"/>
<button id="btnSendToSystem" onclick="sendSys();">发送</button>
</div>
</body>
<script type="text/javascript">
var socket;
connect();
function connect() {
var userFlag = 'user_PU';
var opts = {
query: 'userFlag=' + userFlag
};
socket = io.connect('http://localhost:8503', opts);
socket.on('connect', function () {
console.log("连接成功");
output('当前用户是:' + userFlag );
output('<span class="msg-color">连接成功了。</span>');
});
socket.on('disconnect', function () {
output('<span class="msg-color">下线了。 </span>');
});
socket.on('CHANNEL_STUDENT', function (data) {
let msg= JSON.stringify(data)
output('收到学生频道消息了:' + msg );
console.log(data);
});
socket.on('CHANNEL_SYSTEM', function (data) {
let msg= JSON.stringify(data)
output('收到系统全局消息了:' + msg );
console.log(data);
});
}
function sendSys() {
console.log('发送消息给服务端');
var content = document.getElementById('content').value;
socket.emit('CHANNEL_SYSTEM',JSON.stringify({
'content': content,
'from': 'user_PU'
}));
}
function output(message) {
var element = $("<div>" + message + "</div>");
$('#console').prepend(element);
}
</script>
</html>
OK,把项目跑起来,开始玩。
直接访问客户端页面 模拟学生 JC 连接 socket:
可以看到服务端有监测到:
这里监测的:
先试试客户端给系统推消息先:
可以看到服务端成功收到消息:
这种方式,其实是因为服务监听了相关的频道:
前端使用 JS 推到这个系统频道:
ps: 其实前端给服务端推消息,其实调用接口就可以。
OK,进入核心应用场景 1:
群发,所有人都能收到
系统给连上的客户端都推送消息
{
"type": "ALL",
"content":"你们好,这是一条广播消息,全部人都能收到",
"channel":"CHANNEL_SYSTEM"
}
看看效果:
然后是场景 2,局部群发,部分人群都能收到
其实也就是通过 HTML 客户端监听主题做区分就好:
直接拉人口,升 3 :
模拟 2 个学生,1 个老师都连接上了 socket
当然,老师监听的是 老师频道:
然后我们模拟推送一下消息到指定的老师频道:
{
"type": "ALL",
"content":"给老师们推一条消息!!!",
"channel":"CHANNEL_TEACHER"
}
最后一个场景,也就是单点推送,指定某个人收到
模拟 学生 PU 给 学生 JC 推消息:
可以看到在学生频道的 JC 正常收到了 PU 的消息:
好了,该篇就到这吧。