From 197a596d8787eaab061190dc66977e33b6bcee96 Mon Sep 17 00:00:00 2001
From: ‘liusuyi’ <1951119284@qq.com>
Date: Wed, 06 Sep 2023 14:27:00 +0800
Subject: [PATCH] 优化电子围栏报警触发条件

---
 ard-work/src/main/java/com/ruoyi/app/position/service/impl/ArdAppPositionServiceImpl.java |   83 ++++++++++++++++++++---------------------
 1 files changed, 41 insertions(+), 42 deletions(-)

diff --git a/ard-work/src/main/java/com/ruoyi/app/position/service/impl/ArdAppPositionServiceImpl.java b/ard-work/src/main/java/com/ruoyi/app/position/service/impl/ArdAppPositionServiceImpl.java
index 614f958..5c227bb 100644
--- a/ard-work/src/main/java/com/ruoyi/app/position/service/impl/ArdAppPositionServiceImpl.java
+++ b/ard-work/src/main/java/com/ruoyi/app/position/service/impl/ArdAppPositionServiceImpl.java
@@ -39,7 +39,14 @@
     private ArdAppPositionMapper ardAppPositionMapper;
     @Resource
     private ISysUserService iSysUserService;
+    @Resource
+    RedisCache redisCache;
+    @Resource
+    ArdWallMapper ardWallMapper;
+    @Resource
+    IArdAlarmWallService ardAlarmWallService;
 
+    Map<String, String> firstAlarmMap = new HashMap<>();//首次报警缓存key:用户id_围栏id value: 报警id
     /**
      * 查询app位置
      *
@@ -222,35 +229,27 @@
         return filteredList;
     }
 
-
-    @Resource
-    RedisCache redisCache;
-    @Resource
-    ArdWallMapper ardWallMapper;
-    @Resource
-    IArdAlarmWallService ardAlarmWallService;
-    Map<String, String> userInLastAlarm = new HashMap<>();
-    Map<String, String> userOutLastAlarm = new HashMap<>();
     /**
      * 实时位置检测围栏报警
      * 刘苏义
      * 2023/8/31 8:54:06
      */
     public List<ArdAlarmWall> DetectionWallAlarm(ArdAppPosition ardAppPosition) {
-        SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
-        List<ArdAlarmWall> ardAlarmWalls=new ArrayList<>();
+        List<ArdAlarmWall> ardAlarmWalls = new ArrayList<>();
         //获取当前用户的部门
         String userId = ardAppPosition.getUserId();
         SysUser sysUser = redisCache.getCacheObject("user_list:" + userId);
         Long deptId = sysUser.getDeptId();
-        //获取部门下的所有电子围栏
+        //获取当前部门及子部门下的所有电子围栏
         ArdWall ardWall = new ArdWall();
         ardWall.setDeptId(deptId);
         List<ArdWall> ardWalls = ardWallMapper.selectArdWallList(ardWall);
         if (ardWalls.size() > 0) {
+            //遍历所有电子围栏
             for (ArdWall wall : ardWalls) {
-                String wallPoi = wall.getWallPoi();
-                String wallType = wall.getType();
+                String wallId = wall.getId();//围栏ID
+                String wallType = wall.getType();//围栏类型
+                String wallPoi = wall.getWallPoi();//围栏坐标集合
                 //处理多边形的每个点的经纬度
                 String[] parts = wallPoi.split(",");
                 List<Point> pointList = new ArrayList<>();
@@ -260,8 +259,10 @@
                     point.setLatitude(Double.valueOf(parts[i + 1]));
                     pointList.add(point);
                 }
-                Point userPoint=new Point(ardAppPosition.getLongitude(),ardAppPosition.getLatitude());
-                boolean inPolygon = GisUtil.isInPolygon(userPoint, pointList);
+                //当前用户的位置
+                Point userPoint = new Point(ardAppPosition.getLongitude(), ardAppPosition.getLatitude());
+                boolean inPolygon = GisUtil.isInPolygon(userPoint, pointList);//判断是否在围栏内
+                //创建围栏报警实体对象
                 ArdAlarmWall ardAlarmWall = new ArdAlarmWall();
                 ardAlarmWall.setWallId(wall.getId());
                 ardAlarmWall.setWallName(wall.getWallName());
@@ -271,57 +272,55 @@
                 ardAlarmWall.setLongitude(ardAppPosition.getLongitude());
                 ardAlarmWall.setLatitude(ardAppPosition.getLatitude());
                 ardAlarmWall.setAltitude(ardAppPosition.getAltitude());
-                //禁入
-                if("1".equals(wallType)) {
-                    //判断当前用户位置是否在围栏内
+                String key = userId + "_" + wallId;//最后一次报警缓存key
+                //按类型区分围栏禁入或者禁出
+                if ("1".equals(wallType)) {
                     if (inPolygon) {
-                        String lastInAlarmId = userInLastAlarm.get(userId);
+                        //禁入围栏则若在围栏内,获取首次进入围栏报警ID
+                        String lastInAlarmId = firstAlarmMap.get(key);
+                        //判断当前用户是否首次进入围栏内
                         if (lastInAlarmId == null) {
+                            //当前用户首次进入生成报警
                             String uuid = IdUtils.simpleUUID();
-                            //当前用户上一次状态未进入,生成报警
                             ardAlarmWall.setId(uuid);
                             ardAlarmWallService.insertArdAlarmWall(ardAlarmWall);
-                            //更新最后报警id
-                            userInLastAlarm.put(userId, uuid);
+                            //记录首次报警id
+                            firstAlarmMap.put(key, uuid);
                         } else {
-                            //上一次用户状态已进入,更新最后报警
+                            //用户已进入更新最后报警
                             ardAlarmWall.setId(lastInAlarmId);
                             ardAlarmWallService.updateArdAlarmWall(ardAlarmWall);
                         }
                         ardAlarmWalls.add(ardAlarmWall);
+                    } else {
+                        //禁入围栏则若在围栏外则移除报警缓存
+                        firstAlarmMap.remove(key);
                     }
-                    else
-                    {
-                        //移除最后报警id
-                        userInLastAlarm.remove(userId);
-                    }
-                }
-                else//禁出
+                } else//禁出
                 {
                     //判断当前用户位置是否在围栏外
                     if (!inPolygon) {
-                        String lastAlarmId = userOutLastAlarm.get(userId);
+                        //禁出围栏则若在围栏外,获取首次走出围栏报警ID
+                        String lastAlarmId = firstAlarmMap.get(key);
+                        //判断当前用户是否首次在围栏外
                         if (lastAlarmId == null) {
                             String uuid = IdUtils.simpleUUID();
-                            //当前用户上一次状态未进入,生成报警
+                            //当前用户首次出围栏生成报警
                             ardAlarmWall.setId(uuid);
                             ardAlarmWallService.insertArdAlarmWall(ardAlarmWall);
-                            //更新最后报警id
-                            userOutLastAlarm.put(userId, uuid);
+                            //记录首次报警id
+                            firstAlarmMap.put(key, uuid);
                         } else {
-                            //上一次用户状态已进入,更新最后报警
+                            //用户已经在围栏外更新报警
                             ardAlarmWall.setId(lastAlarmId);
                             ardAlarmWallService.updateArdAlarmWall(ardAlarmWall);
                         }
                         ardAlarmWalls.add(ardAlarmWall);
-                    }
-                    else
-                    {
-                        //移除最后报警id
-                        userOutLastAlarm.remove(userId);
+                    } else {
+                        //移除首次报警缓存
+                        firstAlarmMap.remove(key);
                     }
                 }
-
             }
         }
         return ardAlarmWalls;

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