维帝博客 - Java实现高德地图地理围栏设置功能工具类

前两天做项目需要用到高德地图的<span>地理围栏</span>功能，想从网上找一下教程，看见全是前端或者php的教程没有Java的教程，这边研究了一下特地写了一个工具类来实现。

**准备工作**

需要导入HttpClient的Jar包来实现http请求，这边就不放jar包了，网上搜HttpClient maven是可以搜到的。

```java
import com.alibaba.fastjson.JSONObject;
import org.apache.http.client.methods.*;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.net.URI;
import java.nio.charset.Charset;

/**
 * @Description 高德电子围栏工具类
 * @Author Veddy
 * @Date 2020-07-10
 */
public class AMapFenceUtils {

/**
     * 高德地图地理围栏创建
     * @param key 高德地图Web服务API类型Key
     * @param name 围栏名称
     * @param points 电子围栏经纬度 例"117.317159,31.852989;117.297525,31.847862;117.296071,31.86483"
     * @param desc 电子围栏描述
     * @return
     */
    public static String createFence(String key,String name,String points,String desc){

//组装url
        String url = "https://restapi.amap.com/v4/geofence/meta?key=" + key;

// 创建httpClient
        CloseableHttpClient httpClient = HttpClients.createDefault();
        // 创建post请求方式实例
        HttpPost httpPost = new HttpPost(url);
        // 设置请求头 发送的是json数据格式
        httpPost.setHeader("Content-type", "application/json;charset=utf-8");
        httpPost.setHeader("Connection", "Close");

JSONObject jsonObject = new JSONObject();
        //围栏名称
        jsonObject.put("name",name);
        //围栏经纬度
        jsonObject.put("points",points);
        //电子围栏有效期
        jsonObject.put("valid_time","2050-12-30");
        //电子围栏监控频率
        jsonObject.put("repeat","Mon,Tues,Wed,Thur,Fri,Sat,Sun");
        //备注
        if (desc != null){
            jsonObject.put("desc",desc);
        }

// 设置参数---设置消息实体 也就是携带的数据
        StringEntity entity = new StringEntity(jsonObject.toString(), Charset.forName("UTF-8"));
        // 设置编码格式
        entity.setContentEncoding("UTF-8");
        // 发送Json格式的数据请求
        entity.setContentType("application/json");
        // 把请求消息实体塞进去
        httpPost.setEntity(entity);

// 执行http的post请求
        CloseableHttpResponse httpResponse;
        String result = null;
        try {
            httpResponse = httpClient.execute(httpPost);
            result = EntityUtils.toString(httpResponse.getEntity(), "UTF-8");
        } catch (IOException e) {
            e.printStackTrace();
        }

return result;
    }

/**
     * 更新电子围栏的经纬度
     * @param key 高德地图Web服务API类型key
     * @param gid 围栏全局ID 创建围栏后返回
     * @param name 围栏名称
     * @param points 电子围栏经纬度 例"117.317159,31.852989;117.297525,31.847862;117.296071,31.86483"
     * @return
     */
    public static String updateFence(String key,String gid,String name,String points){

//组装URL
        String url = "https://restapi.amap.com/v4/geofence/meta?key="+ key +"&gid=" + gid;

// 创建httpClient
        CloseableHttpClient httpClient = HttpClients.createDefault();
        // 创建post请求方式实例
//        HttpPost httpPost = new HttpPost(url);
        HttpPatch httpPatch = new HttpPatch(url);
        // 设置请求头 发送的是json数据格式
        httpPatch.setHeader("Content-type", "application/json;charset=utf-8");
        httpPatch.setHeader("Connection", "Close");

JSONObject jsonObject = new JSONObject();
        //围栏名称
        jsonObject.put("name",name);
        //围栏经纬度数组
        jsonObject.put("points",points);
        //电子围栏有效期
        jsonObject.put("valid_time","2050-12-30");
        //电子围栏监控频率
        jsonObject.put("repeat","Mon,Tues,Wed,Thur,Fri,Sat,Sun");

// 执行http的post请求
        CloseableHttpResponse httpResponse;
        String result = null;
        try {
            httpResponse = httpClient.execute(httpPatch);
            result = EntityUtils.toString(httpResponse.getEntity(), "UTF-8");
        } catch (IOException e) {
            e.printStackTrace();
        }

return result;

}

/**
     * 验证是否在电子围栏内部
     * @param key 高德地图Web服务Api类型Key
     * @param diu 设备唯一标识
     * @param locations 设备经纬度
     * @return
     */
    public static String checkFence(String key,String diu,String locations){

//获取unix时间戳
        String dateStr = Long.toString(System.currentTimeMillis()/1000L);
        String url = "https://restapi.amap.com/v4/geofence/status?key="+ key +"&diu="+ diu +"&locations=" + locations+","+dateStr;

String result = null;
        CloseableHttpResponse response = null;
        CloseableHttpClient httpclient = HttpClients.createDefault();
        try {
            // 创建uri
            URIBuilder builder = new URIBuilder(url);
            URI uri = builder.build();
            // 创建http GET请求
            HttpGet httpGet = new HttpGet(uri);
            // 执行请求
            response = httpclient.execute(httpGet);
            if (response.getStatusLine().getStatusCode() == 200) {
                result = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;

}

/**
     * 删除地理围栏
     * @param key 高德地图Web服务Api类型Key
     * @param gid 地理围栏全局ID 创建围栏后返回
     * @return
     */
    public static String deleteFence(String key,String gid){

//组装URL
        String url = "https://restapi.amap.com/v4/geofence/meta?key="+ key +"&gid=" + gid;

String result = null;
        CloseableHttpResponse response = null;
        CloseableHttpClient httpclient = HttpClients.createDefault();
        try {
            // 创建uri
            URIBuilder builder = new URIBuilder(url);
            URI uri = builder.build();
            // 创建http DELETE请求
            HttpDelete httpDelete = new HttpDelete(uri);
            // 执行请求
            response = httpclient.execute(httpDelete);
            if (response.getStatusLine().getStatusCode() == 200) {
                result = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;

}

}
```

**转载请注明出处**