利用百度LBS做一个小Demo

• 申请ak（即获取密钥）

  • http://lbsyun.baidu.com/apiconsole/key?application=key 去这儿注册一个开发者账号即可

• 拼写发送http请求的url

  • 譬如这样的调用

  • http://api.map.baidu.com/geocoder/v2/?address=百度大厦&output=json&ak=E4805d16520de693a3fe707cdc962045&callback=showLocation

• 接收http请求返回的数据

下面看看代码

/**
 * 接口常量
 * @author rex
 *
 */
public interface BaiDuApi {

    /*
     * 根据ip获取信息
     */
    public static final String BD_IP_LOCATION_API = "http://api.map.baidu.com/location/ip";
    
    /*
     *根据城市/经纬度获取信息
     */
    public static final String BD_LOCATION2POINT_API = "http://api.map.baidu.com/geocoder/v2/";
    
    /*
     * 百度lbs ak密钥
     */
    public static final String BD_LBS_AK = "你申请的AK";
    
}

/*
 * 百度地图API
 */
public final class BaiDuMapApi {

    private static Map<String, String> params = CollectionUtil.newHashMap();

    private static final List<String> LOCAL_IP = Arrays.asList("127.0.0.1", "localhost");

    /*
     * 根据ip获取经纬度
     */
    public static Map<String, String> getPoint(String ip) {
        params.clear();
        Map<String, String> point = CollectionUtil.newHashMap();
        if (null != ip && !LOCAL_IP.contains(ip)) {
            params.put("ip", ip);
        }
        params.put("ak", BaiDuApi.BD_LBS_AK);
        params.put("coor", "bd09ll");
        String r = HttpKit.get(BaiDuApi.BD_IP_LOCATION_API, params);
        String json = StringUtils.unicodeToString(r);
        Map<String, Object> map = JSONUtil.json2Map(json);
        Map<String, Object> content = JSONUtil.json2Map(map.get("content").toString());
        Map<String, String> xy = JSONUtil.json2Map(content.get("point").toString());
        point.put("latitude", xy.get("y"));
        point.put("longitude", xy.get("x"));
        return point;
    }

    /*
     * 根据城市和地址获取经纬度
     */
    public static Map<String, String> getPoint(String city, String address) {
        params.clear();
        Map<String, String> point = CollectionUtil.newHashMap();
        if (StringUtils.isNotBlank(city) && StringUtils.isNotBlank(address)) {
            params.put("ak", BaiDuApi.BD_LBS_AK);
            params.put("callback", "renderOption");
            params.put("output", "json");
            params.put("city", city);
            params.put("address", address);
            String r = HttpKit.get(BaiDuApi.BD_LOCATION2POINT_API, params);
            String json = StringUtils.unicodeToString(r.substring(r.indexOf("{"), r.lastIndexOf("}") + 1));
            Map<String, Object> map = JSONUtil.json2Map(json);
            Map<String, Object> content = JSONUtil.json2Map(map.get("result").toString());
            Map<String, Object> location = JSONUtil.json2Map(content.get("location").toString());
            point.put("latitude", location.get("lat").toString());
            point.put("longitude", location.get("lng").toString());
        }
        return point;
    }

    /*
     * 根据ip获取address
     */
    public static Map<String, String> getAddress(String ip) {
        params.clear();
        Map<String, String> address_detail = CollectionUtil.newHashMap();
        if (null != ip && !LOCAL_IP.contains(ip)) {
            params.put("ip", ip);
        }
        params.put("ak", BaiDuApi.BD_LBS_AK);
        String r = HttpKit.get(BaiDuApi.BD_IP_LOCATION_API, params);
        String json = StringUtils.unicodeToString(r);
        Map<String, Object> map = JSONUtil.json2Map(json);
        Map<String, Object> content = JSONUtil.json2Map(map.get("content").toString());
        address_detail = JSONUtil.json2Map(content.get("address_detail").toString());
        return address_detail;
    }

    /*
     * 根据经纬度获取详细地址
     */
    public static Map<String, Object> getAddress(String latitude, String longitude) {
        params.clear();
        Map<String, Object> info = CollectionUtil.newHashMap();
        if (StringUtils.isNotBlank(latitude) && StringUtils.isNotBlank(longitude)) {
            params.put("callback", "renderReverse");
            params.put("ak", BaiDuApi.BD_LBS_AK);
            params.put("location", latitude + "," + longitude);
            params.put("output", "json");
            params.put("pois", "0");
            String r = HttpKit.get(BaiDuApi.BD_LOCATION2POINT_API, params);
            String json = StringUtils.unicodeToString(r.substring(r.indexOf("{"), r.lastIndexOf("}") + 1));
            Map<String, Object> map = JSONUtil.json2Map(json);
            info = JSONUtil.json2Map(map.get("result").toString());
        }
        return info;
    }

}

/*
 * 百度地图API测试
 */
public class Test {

    public static void main(String[] args) {
        //获取地址信息
        Map<String, String> m1 = BaiDuMapApi.getAddress(null);
        System.out.println(m1);
        
        //获取经纬度信息
        Map<String, String> m2 = BaiDuMapApi.getPoint(null);
        System.out.println(m2);
        
        //根据城市获取经纬度
        Map<String, String> m3 = BaiDuMapApi.getPoint("上海市", "东方明珠");
        System.out.println(m3);
        
        //根据经纬度获取地址
        Map<String, Object> m4 = BaiDuMapApi.getAddress(m3.get("latitude"), m3.get("longitude"));
        System.out.println(m4);
    }
}

{province=上海市, city=上海市, street=, district=, street_number=, city_code=289}
{latitude=31.24916171, longitude=121.48789949}
{latitude=31.244750205504, longitude=121.50713723717}
{formatted_address=上海市浦东新区陆家嘴环路1388号, business=东外滩,陆家嘴,外滩, cityCode=289, location={"lat":31.244750051136,"lng":121.50713723717}, addressComponent={"city":"上海市","district":"浦东新区","province":"上海市","street":"陆家嘴环路","street_number":"1388号"}}