Java 地址识别省市区县

要识别Java地址中的省市区县信息，可以使用第三方的地址库或者在线API来实现。以下是一个示例代码，使用了百度地图API来识别地址：

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.apache.commons.io.IOUtils;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

public class AddressRecognizer {
    private static final String BAIDU_MAP_API_URL = "http://api.map.baidu.com/geocoding/v3/?address=%s&output=json&ak=%s";

    public static void main(String[] args) throws Exception {
        String address = "浙江省杭州市西湖区文三路478号浙江大学紫金港校区";
        Map<String, String> addressInfo = recognizeAddress(address, "your_baidu_map_api_ak");
        System.out.println(addressInfo);
    }

    public static Map<String, String> recognizeAddress(String address, String apiKey) throws Exception {
        String url = String.format(BAIDU_MAP_API_URL, address, apiKey);
        String json = IOUtils.toString(new URL(url), StandardCharsets.UTF_8);
        JSONObject result = JSON.parseObject(json).getJSONObject("result");
        JSONObject location = result.getJSONObject("location");
        String latitude = location.getString("lat");
        String longitude = location.getString("lng");
        JSONArray addressComponents = result.getJSONArray("addressComponent");
        String province = addressComponents.getJSONObject(0).getString("short_name");
        String city = addressComponents.getJSONObject(1).getString("short_name");
        String district = addressComponents.getJSONObject(2).getString("short_name");
        String street = addressComponents.getJSONObject(3).getString("short_name");
        Map<String, String> addressInfo = new HashMap<>();
        addressInfo.put("province", province);
        addressInfo.put("city", city);
        addressInfo.put("district", district);
        addressInfo.put("street", street);
        addressInfo.put("latitude", latitude);
        addressInfo.put("longitude", longitude);
        return addressInfo;
    }
}

该代码会输出地址中的省市区县信息，以及地址所在位置的经纬度。需要替换 `your_baidu_map_api_ak` 为你的百度地图API的AK密钥。