java调用百度的接口获取起-止位置的距离

2023-04-28 10:48 开发作者： yfs1024

package com.sky.utils;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.NameValuePair;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
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.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.stereotype.Service;
import Java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
 * Http工具类
 */
@Slf4j
public clapythonss HttpClientUtil {
    static final int TIMEOUT编程客栈_MSEC = 5 * 1000;
    /**
     * 发送GET方式请求
     *
     * @param url
     * @param paramMap
     * @return
     */
    public static String doGet(String url, Map<String, String> paramMap) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        String result = "";
        CloseableHttpResponse response = null;
        try {
            URIBuilder builder = new URIBuilder(url);
            if (paramMap != null) {
                for (String key : paramMap.keySet()) {
                    builder.addParameter(key, parhttp://www.devze.comamMap.get(key));
                }
            }
            URI uri = builder.build();
            log.info("发送的请求====>{}", uri);
            //创建GET请求
            HttpGet httpGet = new HttpGet(uri);
            //发送请求
            response = httpClient.execute(httpGet);
            //判断响应状态
            if (response.getStatusLine().getStatusCode() == 200) {
                result = EntityUtils.toString(response.getEntity(), "UTF-8");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return result;
    }
    /**
     * 发送POST方式请求
     *
     * @param url
     * @param paramMap
     * @return
     * @throws IOException
     */
    public static String doPost(String url, Map<String, String> paramMap) throws IOException {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new Http开发者_Go开发Post(url);
            // 创建参数列表
            if (paramMap != null) {
                List<NameValuePair> paramList = new ArrayList();
                for (Map.Entry<String, String> param : paramMap.entrySet()) {
                    paramList.add(new BasicNameValuePair(param.getKey(), param.getValue()));
                }
                // 模拟表单
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
                httpPost.setEntity(entity);
            }
            httpPost.setConfig(builderRequestConfig());
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
        } catch (Exception e) {
            throw e;
        } finally {
            try {
                response.close();
            } catch (IOExceandroidption e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }
    /**
     * 发送POST方式请求
     *
     * @param url
     * @param paramMap
     * @return
     * @throws IOException
     */
    public static String doPost4Json(String url, Map<String, String> paramMap) throws IOException {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            if (paramMap != null) {
                //构造json格式数据
                JSONObject jsonObject = new JSONObject();
                for (Map.Entry<String, String> param : paramMap.entrySet()) {
                    jsonObject.put(param.getKey(), param.getValue());
                }
                StringEntity entity = new StringEntity(jsonObject.toString(), "utf-8");
                //设置请求编码
                entity.setContentEncoding("utf-8");
                //设置数据类型
                entity.setContentType("application/json");
                httpPost.setEntity(entity);
            }
            httpPost.setConfig(builderRequestConfig());
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "UTF-8");
        } catch (Exception e) {
            throw e;
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return resultString;
    }
    private static RequestConfig builderRequestConfig() {
        return RequestConfig.custom()
                .setConnectTimeout(TIMEOUT_MSEC)
                .setConnectionRequestTimeout(TIMEOUT_MSEC)
                .setSocketTimeout(TIMEOUT_MSEC).build();
    }
}

定义一个Location类用来存放地址的经纬度信息

package com.sky.entity;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
/**
 * @author : Cookie
 * date : 2023/4/20 9:20
 * explain :
 */
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class Location {
    /**
     * 纬度值
     */
    private double lat;
    /**
     * 经度值
     */
    private double lng;
}

自定义一个工具类,封装对百度接口的请求,方便用于以后在Service层中能够直接的调用 .

注: 因为工具列是自己写的可能会有很多不合适的地方如有发现希望指出

另外其中有的异常类也是自定义如果没有,改为RuntimeException 即可

package com.sky.utils;
import com.sky.entity.Location;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.beans.factory.annotation.Value;
import java.util.HashMap;
/**
 * @author : Cookie
 * date : 2023/4/19 23:10
 * explain :
 */
@AllArgsConstructor
@NoArgsConstructor
@Data
@Slf4j
public class BaiduMapUtil {
    // 获取配置类中的值
    @Value("${sky.baidumap.shop-address}")
    private String myShopAddress;
    @Value("${sky.baidumap.ak}")
    private String ak;
    /**
     * 获取经纬度
     *
     * @param userAddress
     * @return
     */
    public Location getLocation(String userAddress) {
        String URL = "https://api.map.baidu.com/geocoding/v3";
        HashMap<String, String> map = new HashMap<>();
        map.put("address", userAddress);
        map.put("output", "json");
        map.put("ak", ak);
        String body = HttpClientUtil.doGet(URL, map);
        Location location = new Location();
        try {
            JSONObject jsonObject = new JSONObject(body);
//           获取Status
            String status = jsonObject.getString("status");
            if ("0".equals(status)) {
//            解析JSON
                JSONObject res = jsonObject.getJSONObject("result").getJSONObject("location");
//            获取经度
                String lng = res.getString("lng");
                Double transferLnf = Double.parseDouble(lng);
                location.setLng(transferLnf);
//            获取纬度
                String lat = res.getString("lat");
                Double transferLat = Double.parseDouble(lat);
                location.setLat(transferLat);
            } else {
//                如果没有返回排除异常交给全局异常处理
                throw new RuntimeException("无权限");
            }
        } catch (Exception e) {
            log.info("解析JSON异常,异常信息{}", e.getMessage());
        }
        return location;
    }
    /**
     * 通过两个经纬度信息判断,返回距离信息
     *
     * @return 二者的距离
     */
    public String getDistance(Location userLocation) {
        Location myShopLocation = getLocation(myShopAddress);
//        起始位置, 即我的位置
        String origin = myShopLocation.getLat() + "," + myShopLocation.getLng();
//        最终位置, 即终点
        String destination = userLocation.getLat() + "," + userLocation.getLng();
        String url = "https://api.map.baidu.com/directionlite/v1/riding";
//        发送Get请求
        HashMap<String, String> map = new HashMap<>();
        map.put("origin", origin);
        map.put("destination", destination);
        map.put("ak", ak);
        map.put("steps_info", "0");
        String result = HttpClientUtil.doGet(url, map);
        String distance = null;
        try {
            JSONObject jsonObject = new JSONObject(result);
            distance = jsonObject.getJSONObject("result").getJSONArray("routes").getJSONObject(0).getString("distance");
        } catch (JSONException e) {
            log.info("路径异常");
        }
        log.info("二者距离{}", distance);
        return distance;
    }
}

此时就可以通过调用工具类传入userAddress用户的地址, 因为商家的地址已经配置,此时就可以通过调用getDistance方法获取到二者的距离.

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继续阅读：java获取起-止位置 java调用百度接口获取起-止位置

java调用百度的接口获取起-止位置的距离

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