基于阿里地图围栏数据,Java离线经纬度逆地址解析省份城市

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发布时间:2024-07-05 05:01

好的,我了解了您的问题。实现高德地图地理围栏设置功能需要使用高德地图的API和Java编程语言。下面是一个简单的Java工具类,可以帮助您实现电子围栏的设置: ```java import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; public class GeoFenceTool { private static final String KEY = "您的高德地图API密钥"; // 高德地图API密钥 /** * 创建电子围栏 * * @param name 电子围栏名称 * @param points 电子围栏坐标点(多边形) * @return 返回电子围栏ID */ public static String createGeoFence(String name, String points) { String url = "https://restapi.amap.com/v4/geofence/meta?key=" + KEY; String param = "{\"name\":\"" + name + "\",\"points\":\"" + points + "\"}"; String result = sendPost(url, param); String geofenceId = result.substring(result.indexOf("gid\":\"") + 6, result.indexOf("\",\"name\"")); return geofenceId; } /** * 删除电子围栏 * * @param geofenceId 电子围栏ID * @return 返回删除结果 */ public static String deleteGeoFence(String geofenceId) { String url = "https://restapi.amap.com/v4/geofence/meta/" + geofenceId + "?key=" + KEY; String result = sendDelete(url); return result; } /** * 发送POST请求 * * @param url 请求地址 * @param param 请求参数 * @return 返回请求结果 */ private static String sendPost(String url, String param) { StringBuilder result = new StringBuilder(); BufferedReader in = null; HttpURLConnection conn = null; try { URL realUrl = new URL(url); conn = (HttpURLConnection) realUrl.openConnection(); conn.setRequestMethod("POST"); conn.setRequestProperty("Content-Type", "application/json"); conn.setDoOutput(true); conn.getOutputStream().write(param.getBytes()); in = new BufferedReader(new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result.append(line); } } catch (Exception e) { e.printStackTrace(); } finally { try { if (in != null) { in.close(); } } catch (IOException e) { e.printStackTrace(); } if (conn != null) { conn.disconnect(); } } return result.toString(); } /** * 发送DELETE请求 * * @param url 请求地址 * @return 返回请求结果 */ private static String sendDelete(String url) { StringBuilder result = new StringBuilder(); BufferedReader in = null; HttpURLConnection conn = null; try { URL realUrl = new URL(url); conn = (HttpURLConnection) realUrl.openConnection(); conn.setRequestMethod("DELETE"); in = new BufferedReader(new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result.append(line); } } catch (Exception e) { e.printStackTrace(); } finally { try { if (in != null) { in.close(); } } catch (IOException e) { e.printStackTrace(); } if (conn != null) { conn.disconnect(); } } return result.toString(); } } ``` 使用方法: 1. 在高德地图开放平台上申请API密钥,并将其替换到KEY变量中。 2. 调用createGeoFence方法创建电子围栏,传入电子围栏名称和坐标点参数。坐标点格式为:经度,纬度;经度,纬度;经度,纬度...(多边形)。 3. 如果需要删除电子围栏,调用deleteGeoFence方法并传入电子围栏ID参数。 注意:本工具类仅供参考,具体实现需要根据项目需求进行调整。同时,使用高德地图API时请遵守《高德地图开放平台服务协议》等相关法律法规。