|  |  | 
 |  |  | import org.springframework.stereotype.Component; | 
 |  |  | import org.springframework.web.servlet.mvc.method.annotation.SseEmitter; | 
 |  |  | import java.io.IOException; | 
 |  |  | import java.util.Hashtable; | 
 |  |  | import java.util.Iterator; | 
 |  |  | import java.util.Map; | 
 |  |  |  | 
 |  |  | import org.slf4j.Logger; | 
 |  |  | import org.slf4j.LoggerFactory; | 
 |  |  |  | 
 |  |  | 
 |  |  |  | 
 |  |  |     private final static Logger logger = LoggerFactory.getLogger(AlarmEventListener.class); | 
 |  |  |  | 
 |  |  |     private static SseEmitter emitter = new SseEmitter(); | 
 |  |  |     private static Map<String, SseEmitter> sseEmitters = new Hashtable<>(); | 
 |  |  |  | 
 |  |  |     public void addSseEmitters(SseEmitter sseEmitter) { | 
 |  |  |         emitter = sseEmitter; | 
 |  |  |     public void addSseEmitters(String browserId, SseEmitter sseEmitter) { | 
 |  |  |         sseEmitters.put(browserId, sseEmitter); | 
 |  |  |     } | 
 |  |  |  | 
 |  |  |     @Override | 
 |  |  | 
 |  |  |             logger.debug("设备报警事件触发,deviceId:" + event.getAlarmInfo().getDeviceId() + ", " | 
 |  |  |                     + event.getAlarmInfo().getAlarmDescription()); | 
 |  |  |         } | 
 |  |  |         try { | 
 |  |  |             String msg = "<strong>设备编码:</strong> <i>" + event.getAlarmInfo().getDeviceId() + "</i>" | 
 |  |  |                         + "<br><strong>报警描述:</strong> <i>" + event.getAlarmInfo().getAlarmDescription() + "</i>" | 
 |  |  |                         + "<br><strong>报警时间:</strong> <i>" + event.getAlarmInfo().getAlarmTime() + "</i>" | 
 |  |  |                         + "<br><strong>定位经度:</strong> <i>" + event.getAlarmInfo().getLongitude() + "</i>" | 
 |  |  |                         + "<br><strong>定位纬度:</strong> <i>" + event.getAlarmInfo().getLatitude() + "</i>"; | 
 |  |  |             emitter.send(msg); | 
 |  |  |         } catch (IOException e) { | 
 |  |  |             if (logger.isDebugEnabled()) { | 
 |  |  |                 logger.debug("SSE 通道已关闭"); | 
 |  |  |         String msg = "<strong>设备编码:</strong> <i>" + event.getAlarmInfo().getDeviceId() + "</i>" | 
 |  |  |                     + "<br><strong>报警描述:</strong> <i>" + event.getAlarmInfo().getAlarmDescription() + "</i>" | 
 |  |  |                     + "<br><strong>报警时间:</strong> <i>" + event.getAlarmInfo().getAlarmTime() + "</i>" | 
 |  |  |                     + "<br><strong>报警位置:</strong> <i>" + event.getAlarmInfo().getLongitude() + "</i>" | 
 |  |  |                     + ", <i>" + event.getAlarmInfo().getLatitude() + "</i>"; | 
 |  |  |  | 
 |  |  |         for (Iterator<Map.Entry<String, SseEmitter>> it = sseEmitters.entrySet().iterator(); it.hasNext();) { | 
 |  |  |             Map.Entry<String, SseEmitter> emitter = it.next(); | 
 |  |  |             logger.info("推送到SSE连接,浏览器ID: " + emitter.getKey()); | 
 |  |  |             try { | 
 |  |  |                 emitter.getValue().send(msg); | 
 |  |  |             } catch (IOException | IllegalStateException e) { | 
 |  |  |                 if (logger.isDebugEnabled()) { | 
 |  |  |                     logger.debug("SSE连接已关闭"); | 
 |  |  |                 } | 
 |  |  |                 // 移除已关闭的连接 | 
 |  |  |                 it.remove(); | 
 |  |  |                 // e.printStackTrace(); | 
 |  |  |             } | 
 |  |  |             // e.printStackTrace(); | 
 |  |  |         } | 
 |  |  |     } | 
 |  |  | } |