系列文章目录
一、SpringBoot连接MySQL数据库实例【tk.mybatis连接mysql数据库】
二、SpringBoot连接Redis与Redisson【代码】
文章目录
代码下载地址
一、效果演示
二、引入依赖
xml
<!-- websocket -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
<version>2.1.1.RELEASE</version>
</dependency>
三、WebSocketConfig
java
@Configuration
public class WebSocketConfig {
@Bean
public ServerEndpointExporter serverEndpointExporter() {
return new ServerEndpointExporter();
}
}
四、SessionWrap
SessionWrap 可根据具体需求自定义
java
@Data
public class SessionWrap {
private String from; // 连接Id
private String type; // 来凝结类型
private Session session;
private Date lastTime;
}
五、WebSocketServer
java
@Slf4j
@Component
@ServerEndpoint(value = "/api/websocket/{from}/{type}")
public class WebSocketServer {
@Autowired
private MessageService messageService;
public static WebSocketServer webSocketServer;
// 所有的连接会话
private static CopyOnWriteArraySet<SessionWrap> sessionList = new CopyOnWriteArraySet<>();
private String from;
private String type;
@PostConstruct
public void init() {
webSocketServer = this;
webSocketServer.messageService = this.messageService;
}
/**
* @author Lee
* @date 2023/7/18 13:57
* @description 创建连接
*/
@OnOpen
public void onOpen(Session session, @PathParam(value = "from") String from, @PathParam(value = "type") String type) {
this.from = from;
this.type = type;
try {
// 遍历list,如果有会话,更新,如果没有,创建一个新的
for (SessionWrap item : sessionList) {
if (item.getFrom().equals(from) && item.getType().equals(type)) {
item.setSession(session);
item.setLastTime(new Date());
log.info("【websocket消息】更新连接,总数为:" + sessionList.size());
return;
}
}
SessionWrap sessionWrap = new SessionWrap();
sessionWrap.setFrom(from);
sessionWrap.setType(type);
sessionWrap.setSession(session);
sessionWrap.setLastTime(new Date());
sessionList.add(sessionWrap);
log.info("【websocket消息】有新的连接,总数为:" + sessionList.size());
} catch (Exception e) {
log.info("【websocket消息】连接失败!错误信息:" + e.getMessage());
}
}
/**
* @author Lee
* @date 2023/7/18 13:57
* @description 关闭连接
*/
@OnClose
public void onClose() {
try {
sessionList.removeIf(item -> item.getFrom().equals(from) && item.getType().equals(type));
log.info("【websocket消息】连接断开,总数为:" + sessionList.size());
} catch (Exception e) {
log.info("【websocket消息】连接断开失败!错误信息:" + e.getMessage());
}
}
/**
* @author Lee
* @date 2023/7/18 14:04
* @description 发送消息
*/
@OnMessage
public void onMessage(String message, Session session) {
try {
// 对消息进行处理
JSONObject r = webSocketServer.messageService.insertMessage(message);
String userId = r.getString("userId");
for (SessionWrap item : sessionList) {
// 发送消息的判断逻辑可根据需求修改
if (item.getFrom().equals(userId) && item.getType().equals("test")) {
item.getSession().getBasicRemote().sendText(r.toJSONString());
log.info("【websocket消息】发送消息成功:" + r.toJSONString());
}
}
} catch (Exception e) {
log.info("【websocket消息】发送消息失败!错误信息:" + e.getMessage());
}
}
@OnError
public void onError(Session session, Throwable error) {
log.error("用户错误,原因:"+error.getMessage());
error.printStackTrace();
}
}