拥堵路段 距离计算

zc-business/src/main/java/com/zc/business/service/impl/DcTrafficStatisticsServiceImpl.java

@@ -43,6 +43,9 @@ import java.util.regex.Pattern;
 @Service
 public class DcTrafficStatisticsServiceImpl implements IDcTrafficStatisticsService {
 
+    // 地球平均半径，单位为公里
+    private static final double EARTH_RADIUS = 6371.0;
+
     // 日志记录器
     protected final Logger logger = LoggerFactory.getLogger(this.getClass());
 
@@ -928,8 +931,37 @@ public class DcTrafficStatisticsServiceImpl implements IDcTrafficStatisticsServi
             Integer asOneRoad = jsonObject.getInteger("as_one_road");
 
             if (asOneRoad == UniversalEnum.ONE.getNumber()){
-                String string = jsonObject.getString("road_name");
-                System.out.println(string);
+
+                String string = jsonObject.getString("list_link_info");
+                JSONArray jsonlist = JSON.parseArray(string);
+                JSONObject o = (JSONObject) jsonlist.get(0);
+
+                String string1 = o.getString("firstPoint");
+                String string2 = o.getString("lastPoint");
+                String lngLats = o.getString("lngLats");
+                String[] lngLatsString = lngLats.split(";");
+                double s = Double.parseDouble(lngLatsString[0].split(",")[0]);
+                double s2 = Double.parseDouble(lngLatsString[0].split(",")[1]);
+                double s3 = Double.parseDouble(lngLatsString[lngLatsString.length-1].split(",")[0]);
+                double s4 = Double.parseDouble(lngLatsString[lngLatsString.length-1].split(",")[1]);
+                double distanceM = calculateDistance(s2, s, s4, s3)* 1000;
+             //  System.out.printf("最大距离为: %.2f 米%n", distanceM);
+                jsonObject.put("max_jam_dist",distanceM);//最大拥堵距离
+                String[] split = string1.split(",");
+                double firstLon = Double.parseDouble(split[0]);
+                double firstLat = Double.parseDouble(split[1]);
+                String[] split2 = string2.split(",");
+                double lastLon = Double.parseDouble(split2[0]);
+                double lastLat = Double.parseDouble(split2[1]);
+                //double firstLat = 35.38524527319016;
+              //  double firstLon = 118.39808642864227;
+                //double lastLat = 35.386351346969604;
+               // double lastLon = 118.4038907289505;
+                double distanceKm = calculateDistance(firstLat, firstLon, lastLat, lastLon);
+                double distanceMeters = distanceKm * 1000; // 将距离转换为米
+                //System.out.printf("两点之间的距离为: %.2f 米%n", distanceMeters);
+                jsonObject.put("jam_dist",distanceMeters);//当前拥堵距离
+
                 return jsonObject;
             }else {
 
@@ -942,7 +974,7 @@ public class DcTrafficStatisticsServiceImpl implements IDcTrafficStatisticsServi
     }
 
     public DcFacility findNearestFacility(List<DcFacility> dcFacilityList, String stakeMarkCode) {
-        // 将目标桩号转换为整数，以便比较
+        // 将目标桩号转换为整数
         int targetCodeAsInt = Integer.parseInt(extract(stakeMarkCode));
 
         DcFacility nearestFacility = null;
@@ -950,11 +982,9 @@ public class DcTrafficStatisticsServiceImpl implements IDcTrafficStatisticsServi
 
         for (DcFacility facility : dcFacilityList) {
             // 假设每个DcFacility对象中有一个方法或直接字段可以获取处理后的桩号字符串
-            String stakeMark = facility.getStakeMark(); // 请替换为实际的getter方法名
-
+            String stakeMark = facility.getStakeMark();
             // 将当前设施的桩号转换为整数
             int currentCodeAsInt = Integer.parseInt(extract(stakeMark));
-
             // 计算与目标桩号的距离（差值的绝对值）
             int distance = Math.abs(targetCodeAsInt - currentCodeAsInt);
 
@@ -967,5 +997,30 @@ public class DcTrafficStatisticsServiceImpl implements IDcTrafficStatisticsServi
 
         return nearestFacility; // 返回最近的桩号信息
     }
+//经纬度计算距离
+
+    public static double calculateDistance(double startLat, double startLon, double endLat, double endLon) {
+
+        // 将角度转换为弧度
+        double startLatRad = Math.toRadians(startLat);
+        double startLonRad = Math.toRadians(startLon);
+        double endLatRad = Math.toRadians(endLat);
+        double endLonRad = Math.toRadians(endLon);
+
+        // 经纬度之差
+        double dLat = endLatRad - startLatRad;
+        double dLon = endLonRad - startLonRad;
+
+        // Haversine公式
+        double a = Math.pow(Math.sin(dLat / 2), 2) +
+                Math.cos(startLatRad) * Math.cos(endLatRad) *
+                        Math.pow(Math.sin(dLon / 2), 2);
+        double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+
+        // 计算两点间的距离
+        double distance = EARTH_RADIUS * c;
+
+        return distance;
+    }
 
 }