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java調(diào)用百度的接口獲取起-止位置的距離

更新時(shí)間：2023年04月28日 10:10:09 作者：yfs1024

本文主要介紹了java調(diào)用百度的接口獲取起-止位置的距離，文中通過(guò)示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來(lái)一起學(xué)習(xí)學(xué)習(xí)吧

需求:校驗(yàn)收貨地址是否超出配送范圍

重要:
做該需求的思路就是通過(guò)賣(mài)家和賣(mài)家具體的地址信息,來(lái)獲取到二者的經(jīng)緯度, 此時(shí)可以使用百度的 "地理編碼服務(wù)",即可獲取對(duì)應(yīng)的經(jīng)緯度
第二步,就是通過(guò)二者的經(jīng)緯度,按照百度接口的要求,發(fā)送,即可獲取到包含二者距離的JSON串, 此時(shí)就可以通過(guò)解析JSON獲取距離, 最后在判斷得到的距離,與自己配送的距離進(jìn)行比較,即可判斷是否超出距離

注冊(cè)一個(gè)百度賬號(hào),要求是必須實(shí)名認(rèn)證,需要填寫(xiě)一些基本信息,這里需要注意一下.

首先要獲取百度地圖的一個(gè)AK

登錄百度地圖開(kāi)放平臺(tái)：https://lbsyun.baidu.com/

進(jìn)入控制臺(tái)，創(chuàng)建應(yīng)用，獲取AK：

創(chuàng)建應(yīng)用時(shí)：
類(lèi)型：選服務(wù)端
IP白名單：0.0.0.0/0

對(duì)于此需求用到了兩個(gè)百度的接口, 接口地址如下:

地理編碼服務(wù): https://lbsyun.baidu.com/index.php?title=webapi/guide/webservice-geocoding

https://lbsyun.baidu.com/index.php?title=webapi/directionlite-v1

代碼編寫(xiě):

1. 配置基本屬性

sky:
  baidumap:
    shop-address: 北京市西城區(qū)廣安門(mén)內(nèi)大街167號(hào)翔達(dá)大廈1層
    ak: XXXXXXXXXXXXXXXXXXXXXXXXXX
    default-distance: 5000   // 這里在本文中沒(méi)有使用,

用于發(fā)送請(qǐng)求的工具類(lèi)

說(shuō)明,因?yàn)楝F(xiàn)在我們需要從服務(wù)器中發(fā)送請(qǐng)求,此時(shí)我們就需要使用HttpClient這個(gè)小框架來(lái)實(shí)現(xiàn)此功能, 下面的工具類(lèi)是對(duì)此框架的一個(gè)封裝

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工具類(lèi)
 */
@Slf4j
public class HttpClientUtil {
    static final int TIMEOUT_MSEC = 5 * 1000;
    /**
     * 發(fā)送GET方式請(qǐng)求
     *
     * @param url
     * @param paramMap
     * @return
     */
    public static String doGet(String url, Map<String, String> paramMap) {
        // 創(chuàng)建Httpclient對(duì)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, paramMap.get(key));
                }
            }
            URI uri = builder.build();
            log.info("發(fā)送的請(qǐng)求====>{}", uri);
            //創(chuàng)建GET請(qǐng)求
            HttpGet httpGet = new HttpGet(uri);
            //發(fā)送請(qǐng)求
            response = httpClient.execute(httpGet);
            //判斷響應(yīng)狀態(tài)
            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;
    }
    /**
     * 發(fā)送POST方式請(qǐng)求
     *
     * @param url
     * @param paramMap
     * @return
     * @throws IOException
     */
    public static String doPost(String url, Map<String, String> paramMap) throws IOException {
        // 創(chuàng)建Httpclient對(duì)象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 創(chuàng)建Http Post請(qǐng)求
            HttpPost httpPost = new HttpPost(url);
            // 創(chuàng)建參數(shù)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()));
                }
                // 模擬表單
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList);
                httpPost.setEntity(entity);
            }
            httpPost.setConfig(builderRequestConfig());
            // 執(zhí)行http請(qǐng)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;
    }
    /**
     * 發(fā)送POST方式請(qǐng)求
     *
     * @param url
     * @param paramMap
     * @return
     * @throws IOException
     */
    public static String doPost4Json(String url, Map<String, String> paramMap) throws IOException {
        // 創(chuàng)建Httpclient對(duì)象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 創(chuàng)建Http Post請(qǐng)求
            HttpPost httpPost = new HttpPost(url);
            if (paramMap != null) {
                //構(gòu)造json格式數(shù)據(jù)
                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");
                //設(shè)置請(qǐng)求編碼
                entity.setContentEncoding("utf-8");
                //設(shè)置數(shù)據(jù)類(lèi)型
                entity.setContentType("application/json");
                httpPost.setEntity(entity);
            }
            httpPost.setConfig(builderRequestConfig());
            // 執(zhí)行http請(qǐng)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();
    }
}

定義一個(gè)Location類(lèi)用來(lái)存放地址的經(jīng)緯度信息

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 {
    /**
     * 緯度值
     */
    private double lat;
    /**
     * 經(jīng)度值
     */
    private double lng;
}

自定義一個(gè)工具類(lèi),封裝對(duì)百度接口的請(qǐng)求,方便用于以后在Service層中能夠直接的調(diào)用 .

注: 因?yàn)楣ぞ吡惺亲约簩?xiě)的可能會(huì)有很多不合適的地方如有發(fā)現(xiàn)希望指出

另外其中有的異常類(lèi)也是自定義如果沒(méi)有,改為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 {
    // 獲取配置類(lèi)中的值
    @Value("${sky.baidumap.shop-address}")
    private String myShopAddress;
    @Value("${sky.baidumap.ak}")
    private String ak;
    /**
     * 獲取經(jīng)緯度
     *
     * @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);
//           獲取Status
            String status = jsonObject.getString("status");
            if ("0".equals(status)) {
//            解析JSON
                JSONObject res = jsonObject.getJSONObject("result").getJSONObject("location");
//            獲取經(jīng)度
                String lng = res.getString("lng");
                Double transferLnf = Double.parseDouble(lng);
                location.setLng(transferLnf);
//            獲取緯度
                String lat = res.getString("lat");
                Double transferLat = Double.parseDouble(lat);
                location.setLat(transferLat);
            } else {
//                如果沒(méi)有返回排除異常交給全局異常處理
                throw new RuntimeException("無(wú)權(quán)限");
            }
        } catch (Exception e) {
            log.info("解析JSON異常,異常信息{}", e.getMessage());
        }
        return location;
    }
    /**
     * 通過(guò)兩個(gè)經(jīng)緯度信息判斷,返回距離信息
     *
     * @return 二者的距離
     */
    public String getDistance(Location userLocation) {
        Location myShopLocation = getLocation(myShopAddress);
//        起始位置, 即我的位置
        String origin = myShopLocation.getLat() + "," + myShopLocation.getLng();
//        最終位置, 即終點(diǎn)
        String destination = userLocation.getLat() + "," + userLocation.getLng();
        String url = "https://api.map.baidu.com/directionlite/v1/riding";
//        發(fā)送Get請(qǐng)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("路徑異常");
        }
        log.info("二者距離{}", distance);
        return distance;
    }
}

此時(shí)就可以通過(guò)調(diào)用工具類(lèi)傳入userAddress用戶的地址, 因?yàn)樯碳业牡刂芬呀?jīng)配置,此時(shí)就可以通過(guò)調(diào)用getDistance方法獲取到二者的距離.

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