添加浏览器ID，确保SSE可同时推送到不同的前端

src/main/java/com/genersoft/iot/vmp/gb28181/event/alarm/AlarmEventListener.java

@@ -4,6 +4,10 @@ import org.springframework.context.ApplicationListener;
 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;
 
@@ -18,10 +22,10 @@ public class AlarmEventListener implements ApplicationListener<AlarmEvent> {
 
     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) {
+    public void addSseEmitters(String browserId, SseEmitter sseEmitter) {
-        emitter = sseEmitter;
+        sseEmitters.put(browserId, sseEmitter);
     }
 
     @Override
@@ -30,18 +34,25 @@ public class AlarmEventListener implements ApplicationListener<AlarmEvent> {
             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>报警位置：</strong> <i>" + event.getAlarmInfo().getLongitude() + "</i>"
-                        + "<br><strong>定位纬度：</strong> <i>" + event.getAlarmInfo().getLatitude() + "</i>";
+                    + ", <i>" + event.getAlarmInfo().getLatitude() + "</i>";
-            emitter.send(msg);
+
-        } catch (IOException e) {
+        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 通道已关闭");
+                    logger.debug("SSE连接已关闭");
                 }
+                // 移除已关闭的连接
+                it.remove();
                 // e.printStackTrace();
             }
         }
     }
+}

src/main/java/com/genersoft/iot/vmp/vmanager/SseController/SseController.java

@@ -1,9 +1,10 @@
-package com.genersoft.iot.vmp.vmanager.SEEController;
+package com.genersoft.iot.vmp.vmanager.SseController;
 
 import com.genersoft.iot.vmp.gb28181.event.alarm.AlarmEventListener;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 
 /**
@@ -14,16 +15,16 @@ import org.springframework.web.servlet.mvc.method.annotation.SseEmitter;
 
 @Controller
 @RequestMapping("/api")
-public class SEEController {
+public class SseController {
     @Autowired 
     AlarmEventListener alarmEventListener;
     
    	//设置响应
     @RequestMapping("/emit")
-    public SseEmitter emit() {
+    public SseEmitter emit(@RequestParam String browserId) {
-        SseEmitter sseEmitter = new SseEmitter(0L);
+        final SseEmitter sseEmitter = new SseEmitter(0L);
         try {
-            alarmEventListener.addSseEmitters(sseEmitter);
+            alarmEventListener.addSseEmitters(browserId, sseEmitter);
         }catch (Exception e){
             sseEmitter.completeWithError(e);
         }

web_src/package-lock.json

@@ -99,7 +99,6 @@
       "version": "3.2.1",
       "resolved": "https://registry.npm.taobao.org/ansi-styles/download/ansi-styles-3.2.1.tgz",
       "integrity": "sha1-QfuyAkPlCxK+DwS43tvwdSDOhB0=",
-      "dev": true,
       "requires": {
         "color-convert": "^1.9.0"
       }
@@ -1645,7 +1644,6 @@
       "version": "2.4.2",
       "resolved": "https://registry.npm.taobao.org/chalk/download/chalk-2.4.2.tgz",
       "integrity": "sha1-zUJUFnelQzPPVBpJEIwUMrRMlCQ=",
-      "dev": true,
       "requires": {
         "ansi-styles": "^3.2.1",
         "escape-string-regexp": "^1.0.5",
@@ -1847,7 +1845,6 @@
       "version": "1.9.3",
       "resolved": "https://registry.npm.taobao.org/color-convert/download/color-convert-1.9.3.tgz",
       "integrity": "sha1-u3GFBpDh8TZWfeYp0tVHHe2kweg=",
-      "dev": true,
       "requires": {
         "color-name": "1.1.3"
       }
@@ -1855,8 +1852,7 @@
     "color-name": {
       "version": "1.1.3",
       "resolved": "https://registry.npm.taobao.org/color-name/download/color-name-1.1.3.tgz",
-      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
-      "dev": true
     },
     "color-string": {
       "version": "0.3.0",
@@ -3713,8 +3709,7 @@
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npm.taobao.org/escape-string-regexp/download/escape-string-regexp-1.0.5.tgz",
-      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=",
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
-      "dev": true
     },
     "escope": {
       "version": "3.6.0",
@@ -4150,6 +4145,11 @@
         "locate-path": "^2.0.0"
       }
     },
+    "fingerprintjs2": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/fingerprintjs2/-/fingerprintjs2-2.1.2.tgz",
+      "integrity": "sha512-ZPsLgjziFRbUb5tXWpEMtWp4XFnzSah8SiNfl3aoURDZ+2zi2tuIOYUULqDBV+Cb6paN+raWT+Q2qpOaCbX/Yw=="
+    },
     "flatten": {
       "version": "1.0.3",
       "resolved": "https://registry.npm.taobao.org/flatten/download/flatten-1.0.3.tgz",
@@ -4403,8 +4403,7 @@
     "has-flag": {
       "version": "3.0.0",
       "resolved": "https://registry.npm.taobao.org/has-flag/download/has-flag-3.0.0.tgz",
-      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
-      "dev": true
     },
     "has-symbols": {
       "version": "1.0.1",
@@ -8437,6 +8436,34 @@
         }
       }
     },
+    "postcss-pxtorem": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/postcss-pxtorem/-/postcss-pxtorem-5.1.1.tgz",
+      "integrity": "sha512-uvgIujL/pn0GbZ+rczESD2orHsbXrrCqi+q9wJO8PCk3ZGCoVVtu5hZTbtk+tbZHZP5UkTfCvqOrTZs9Ncqfsg==",
+      "requires": {
+        "postcss": "^7.0.27"
+      },
+      "dependencies": {
+        "postcss": {
+          "version": "7.0.35",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.35.tgz",
+          "integrity": "sha512-3QT8bBJeX/S5zKTTjTCIjRF3If4avAT6kqxcASlTWEtAFCb9NH0OUxNDfgZSWdP5fJnBYCMEWkIFfWeugjzYMg==",
+          "requires": {
+            "chalk": "^2.4.2",
+            "source-map": "^0.6.1",
+            "supports-color": "^6.1.0"
+          }
+        },
+        "supports-color": {
+          "version": "6.1.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
+          "integrity": "sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==",
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
+      }
+    },
     "postcss-reduce-idents": {
       "version": "2.4.0",
       "resolved": "https://registry.npm.taobao.org/postcss-reduce-idents/download/postcss-reduce-idents-2.4.0.tgz?cache=0&sync_timestamp=1599672339373&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fpostcss-reduce-idents%2Fdownload%2Fpostcss-reduce-idents-2.4.0.tgz",
@@ -9893,8 +9920,7 @@
     "source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npm.taobao.org/source-map/download/source-map-0.6.1.tgz",
-      "integrity": "sha1-dHIq8y6WFOnCh6jQu95IteLxomM=",
+      "integrity": "sha1-dHIq8y6WFOnCh6jQu95IteLxomM="
-      "dev": true
     },
     "source-map-resolve": {
       "version": "0.5.3",
@@ -10290,7 +10316,6 @@
       "version": "5.5.0",
       "resolved": "https://registry.npm.taobao.org/supports-color/download/supports-color-5.5.0.tgz?cache=0&sync_timestamp=1598611719015&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsupports-color%2Fdownload%2Fsupports-color-5.5.0.tgz",
       "integrity": "sha1-4uaaRKyHcveKHsCzW2id9lMO/I8=",
-      "dev": true,
       "requires": {
         "has-flag": "^3.0.0"
       }

web_src/package.json

@@ -15,7 +15,9 @@
     "core-js": "^2.6.5",
     "echarts": "^4.7.0",
     "element-ui": "2.10.1",
+    "fingerprintjs2": "^2.1.2",
     "moment": "^2.29.1",
+    "postcss-pxtorem": "^5.1.1",
     "vue": "^2.6.11",
     "vue-clipboard2": "^0.3.1",
     "vue-cookies": "^1.7.4",

web_src/src/components/UiHeader.vue

@@ -34,7 +34,8 @@ export default {
         sseControl() {
             let that = this;
             if (this.alarmNotify) {
-                this.sseSource = new EventSource('/api/emit'); 
+                console.log("申请SSE推送API调用，浏览器ID: " + this.$browserId);
+                this.sseSource = new EventSource('/api/emit?browserId=' + this.$browserId); 
         	    this.sseSource.addEventListener('message', function(evt) {
                     that.$notify({
                         title: '收到报警信息',

web_src/src/main.js

@@ -8,10 +8,28 @@ import axios from 'axios';
 import VueCookies from 'vue-cookies';
 import echarts from 'echarts';
 
-import VueClipboard from 'vue-clipboard2'
+import VueClipboard from 'vue-clipboard2';
 import { Notification } from 'element-ui';
+import Fingerprint2 from 'fingerprintjs2';
 
-Vue.use(VueClipboard)
+// 生成唯一ID
+Fingerprint2.get(function(components) {
+  const values = components.map(function(component,index) {
+    if (index === 0) { //把微信浏览器里UA的wifi或4G等网络替换成空,不然切换网络会ID不一样
+      return component.value.replace(/\bNetType\/\w+\b/, '');
+    }
+    return component.value;
+  })
+  //console.log(values)  //使用的浏览器信息npm 
+  // 生成最终id
+  let port = window.location.port;
+  console.log(port);
+  const fingerPrint = Fingerprint2.x64hash128(values.join(port), 31)
+  Vue.prototype.$browserId = fingerPrint;
+  console.log("唯一标识码：" + fingerPrint);
+});
+
+Vue.use(VueClipboard);
 Vue.use(ElementUI);
 Vue.use(VueCookies);
 Vue.prototype.$axios = axios;