java调用百度地图接口输入名称查经度纬度

 如何注册ak号请参考https://blog.csdn.net/weixin_42512684/article/details/115843299

 

package manager.tool;

import com.alibaba.fastjson.JSON;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Component;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

/**
 * @createDate 创建时间：
 * 类说明 -- 百度地图经纬度和地址相互转换的工具类
 */
@Component
public class GetAddressUtil {

 


    public static void main(String args[]){
        Map<String, String> map = new HashMap<>();
         map =  getMap("XXX市第一中学");
         System.out.println(map);
     }

    //由于接口请求有时候无法得到响应，故循环调用五次

    public Map<String, String> getMap(String address) {
        String AK = "你的AK码";
        Map<String, String> map = null;
        for (int i = 0; i < 5; i++) {
            map = getGeocoderLatitude(address, AK);
            if (map != null) {
                break;
            }
        }
        return map;
    }

    /**
     * 返回输入地址的经纬度坐标
     * key lng(经度),lat(纬度)
     */
    public static Map<String, String> getGeocoderLatitude(String address, String AK) {
        BufferedReader in = null;
        try {
            //将地址转换成utf-8的16进制
            address = URLEncoder.encode(address, "UTF-8");
            URL tirc = new URL("http://api.map.baidu.com/geocoder?address=" + address + "&output=json&key=" + AK);
            in = new BufferedReader(new InputStreamReader(tirc.openStream(), "UTF-8"));
            String res;
            StringBuilder sb = new StringBuilder("");
            while ((res = in.readLine()) != null) {
                sb.append(res.trim());
            }
            String str = sb.toString();
            Map<String, String> map = null;
            if (str != null && str.length() > 0) {
                int lngStart = str.indexOf("lng\":");
                int lngEnd = str.indexOf(",\"lat");
                int latEnd = str.indexOf("},\"precise");
                if (lngStart > 0 && lngEnd > 0 && latEnd > 0) {
                    String lng = str.substring(lngStart + 5, lngEnd);
                    String lat = str.substring(lngEnd + 7, latEnd);
                    map = new HashMap<String, String>();
                    map.put("lng", lng);
                    map.put("lat", lat);
                    return map;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

   
}

 

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