设置电子围栏 高德地图_Java实现高德地图地理围栏设置功能工具类
时间: 2023-11-28 10:04:19 浏览: 192
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。
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