| package com.doumee.core.utils; | 
|   | 
|   | 
| import com.alibaba.fastjson.JSONObject; | 
| import com.doumee.dao.business.web.request.LocaltionDTO; | 
|   | 
| import java.awt.geom.GeneralPath; | 
| import java.awt.geom.Point2D; | 
| import java.util.ArrayList; | 
| import java.util.List; | 
|   | 
| /** | 
|  * 计算距离 | 
|  */ | 
| public class PositionUtil { | 
|   | 
|     public static String getTxMapAddrByLatAndLng(Double lat,Double lng,String host,String mapkey){ | 
|         try { | 
|             if(lat == null || lng ==null){ | 
|                 return null; | 
|             } | 
|             String url =host +"/ws/geocoder/v1/?key="+mapkey+"&location="+lat+","+lng; | 
|             String res = HttpsUtil.get(url,false); | 
|             JSONObject jsonObject = JSONObject.parseObject(res ); | 
|            String r = null; | 
|            if(jsonObject.getJSONObject("result")!=null){ | 
|                if(jsonObject.getJSONObject("result").getJSONObject("formatted_addresses")!=null){ | 
|                    r =jsonObject.getJSONObject("result").getJSONObject("formatted_addresses").getString("formatted_addresses"); | 
|                } | 
|                if(r!=null && !r.equals("")){ | 
|                    r =jsonObject.getJSONObject("result").getString("address"); | 
|                } | 
|            } | 
|            return r; | 
|   | 
|         }catch (Exception e){ | 
|             e.printStackTrace(); | 
|         } | 
|         return null; | 
|     } | 
|     /** | 
|      * 判断坐标点是否在多边形区域内 | 
|      * | 
|      * @param pointLon 要判断的点的经度 | 
|      * @param pointLat 要判断的点的纬度 | 
|      * @return true:范围内; false:范围外 | 
|      */ | 
|     public static boolean isInPolygon(double pointLon, double pointLat, List<LocaltionDTO> list) { | 
|         if(list==null ||list.size()==0){ | 
|             return false; | 
|         } | 
|         double[] lon = new double[list.size()]; | 
|         double[] lat = new double[list.size()]; | 
|         for (int i = 0; i < list.size(); i++) { | 
|             lon[i] = list.get(i).getLng() ==null?0:list.get(i).getLng(); | 
|             lat[i] = list.get(i).getLat() ==null?0:list.get(i).getLat(); | 
|         } | 
|         // 将要判断的横纵坐标组成一个点 | 
|         Point2D.Double point = new Point2D.Double(pointLon, pointLat); | 
|         // 将区域各顶点的横纵坐标放到一个点集合里面 | 
|         List<Point2D.Double> pointList = new ArrayList<>(); | 
|         double polygonPointToX; | 
|         double polygonPointToY; | 
|         for (int i = 0; i < lon.length; i++) { | 
|             polygonPointToX = lon[i]; | 
|             polygonPointToY = lat[i]; | 
|             Point2D.Double polygonPoint = new Point2D.Double(polygonPointToX, polygonPointToY); | 
|             pointList.add(polygonPoint); | 
|         } | 
|         return check(point, pointList); | 
|     } | 
|   | 
|     /** | 
|      * 坐标点是否在多边形内 | 
|      * | 
|      * @param point   要判断的点的横纵坐标 | 
|      * @param polygon 组成的顶点坐标集合 | 
|      */ | 
|     private static boolean check(Point2D.Double point, List<Point2D.Double> polygon) { | 
|         GeneralPath generalPath = new GeneralPath(); | 
|   | 
|         Point2D.Double first = polygon.get(0); | 
|         // 通过移动到指定坐标(以双精度指定),将一个点添加到路径中 | 
|         generalPath.moveTo(first.x, first.y); | 
|         polygon.remove(0); | 
|         for (Point2D.Double d : polygon) { | 
|             // 通过绘制一条从当前坐标到新指定坐标(以双精度指定)的直线,将一个点添加到路径中。 | 
|             generalPath.lineTo(d.x, d.y); | 
|         } | 
|         // 将几何多边形封闭 | 
|         generalPath.lineTo(first.x, first.y); | 
|         generalPath.closePath(); | 
|         // 测试指定的 Point2D 是否在 Shape 的边界内。 | 
|         return generalPath.contains(point); | 
|     } | 
|   | 
| } |