Java获取公网ip和地址定位（精确到县区）

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class IpAddressUtil {

    //根据url获取内容
    public String getStringWithUrl(String urlStr) throws IOException {

        String result = "";

        //建立连接
        URL url = new URL(urlStr);
        HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();
        httpUrlConn.setDoInput(true);
        httpUrlConn.setRequestMethod("GET");
        httpUrlConn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");

        //获取输入流
        InputStream input = httpUrlConn.getInputStream();

        //将字节输入流转换为字符输入流
        InputStreamReader read = new InputStreamReader(input, "utf-8");

        //为字符输入流添加缓冲
        BufferedReader br = new BufferedReader(read);

        //读取返回结果
        String data = br.readLine();
        while (data != null) {
            result += data;
            data = br.readLine();
        }

        //释放资源
        br.close();
        read.close();
        input.close();
        httpUrlConn.disconnect();

        return result;

    }

    //获取ipAddress字符串
    public String getIpAddressStr() throws IOException {
        return this.getStringWithUrl("http://pv.sohu.com/cityjson?ie=utf-8");
    }

    //获取公网ip
    public String getIp() throws IOException {
        return this.getIpAddressStr().split("\"")[3];
    }

    //获取精确定位（根据公网ip）
    public String getAddress() throws IOException {
        String str = this.getStringWithUrl("https://www.ipshudi.com/" + this.getIp() + ".htm").split("span")[3];
        return str.substring(1,str.length()-2);
    }

    //获取公网ip和精确定位地址（格式化）
    public String getIpAndAddress() throws IOException {
        return "公网ip："+this.getIp()+"，当前地址定位："+this.getAddress();
    }


}