Java 根据IP获取地址

用淘宝接口：(源码：java 根据IP地址获取地理位置)

pom.xml:

<!-- https://mvnrepository.com/artifact/net.sourceforge.jregex/jregex -->
        <dependency>
            <groupId>net.sourceforge.jregex</groupId>
            <artifactId>jregex</artifactId>
            <version>1.2_01</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/net.sf.json-lib/json-lib -->
        <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>

AddressUtils.java:

package com.euphe.util;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class AddressUtils {
    /**
     *
     * @param content
     *            请求的参数 格式为：name=xxx&pwd=xxx
     * @param encodingString
     *            服务器端请求编码。如GBK,UTF-8等
     * @return
     * @throws UnsupportedEncodingException
     */
    public static String getAddresses(String content, String encodingString){
        //调用淘宝API
        String urlStr = "http://ip.taobao.com/service/getIpInfo.php";
        String returnStr = getResult(urlStr, content,encodingString);
        if(returnStr != null){
            System.out.println(returnStr);
            return  returnStr;
        }
        return null;
    }

    /**
     * @param urlStr
     *            请求的地址
     * @param content
     *            请求的参数 格式为：name=xxx&pwd=xxx
     * @param encodingString
     *            服务器端请求编码。如GBK,UTF-8等
     * @return
     */
    private static String getResult(String urlStr, String content, String encodingString) {
        URL url = null;
        HttpURLConnection connection = null;
        try {
            url = new URL(urlStr);
            // 新建连接实例
            connection = (HttpURLConnection) url.openConnection();
            // 设置连接超时时间，单位毫秒
            //connection.setConnectTimeout(20000);
            // 设置读取数据超时时间，单位毫秒
            //connection.setReadTimeout(20000);
            //是否打开输出流
            connection.setDoOutput(true);
            //是否打开输入流
            connection.setDoInput(true);
            //提交方法 POST|GET
            connection.setRequestMethod("POST");
            //是否缓存
            connection.setUseCaches(false);
            //打开连接端口
            connection.connect();
            //打开输出流往对端服务器写数据
            DataOutputStream out = new DataOutputStream(connection.getOutputStream());
            //写数据，即提交表单 name=xxx&pwd=xxx
            out.writeBytes(content);
            //刷新
            out.flush();
            //关闭输出流
            out.close();
            // 往对端写完数据对端服务器返回数据 ,以BufferedReader流来读取
            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), encodingString));
            StringBuffer buffer = new StringBuffer();
            String line = "";
            while ((line = reader.readLine()) != null){
                buffer.append(line);
            }
            reader.close();
            return buffer.toString();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(connection != null){
                connection.disconnect();
            }
        }
        return null;
    }
}

测试：

@Test
public void getAddressByIp() throws Exception {
    // 参数ip
    String ip = "219.136.134.157";
    // json_result用于接收返回的json数据
    String json_result = null;
    try {
        json_result = AddressUtils.getAddresses("ip=" + ip, "utf-8");
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    JSONObject json = JSONObject.fromObject(json_result);
    System.out.println("json数据： " + json);
    String country = JSONObject.fromObject(json.get("data")).get("country").toString();
    String region = JSONObject.fromObject(json.get("data")).get("region").toString();
    String city = JSONObject.fromObject(json.get("data")).get("city").toString();
    String county = JSONObject.fromObject(json.get("data")).get("county").toString();
    String isp = JSONObject.fromObject(json.get("data")).get("isp").toString();
    String area = JSONObject.fromObject(json.get("data")).get("area").toString();
    System.out.println("国家： " + country);
    System.out.println("地区： " + area);
    System.out.println("省份: " + region);
    System.out.println("城市： " + city);
    System.out.println("区/县： " + county);
    System.out.println("互联网服务提供商： " + isp);  

    String address = country + "/";
    address += region + "/";
    address += city + "/";
    address += county;
    System.out.println(address);  

结果：

{"code":0,"data":{"country":"中国","country_id":"CN","area":"华南","area_id":"800000","region":"广东省","region_id":"440000","city":"广州市","city_id":"440100","county":"越秀区","county_id":"440104","isp":"电信","isp_id":"100017","ip":"219.136.134.157"}}
国家： 中国
地区： 华南
省份: 广东省
城市： 广州市
区/县： 越秀区
互联网服务提供商： 电信
中国/广东省/广州市/越秀区  

但用淘宝的API时，真的很慢，少量数据还可以，一旦数据上万，那就结束不了了，等了好久都运行不完。

没办法，开始尝试其他方法。

用【GeoLite2 City】库（源自：Java 通过Request请求获取IP地址对应省份、城市）

pom.xml:

<dependency>
            <groupId>com.maxmind.geoip2</groupId>
            <artifactId>geoip2</artifactId>
            <version>2.8.1</version>
        </dependency>

测试：

public static void main(String[] args) throws IOException{
      // 创建 GeoLite2 数据库
      File database = new File("/Users/admin/GeoLite2-City.mmdb");
      // 读取数据库内容
      DatabaseReader reader = new DatabaseReader.Builder(database).build();
      InetAddress ipAddress = InetAddress.getByName("171.108.233.157");     

      // 获取查询结果
      CityResponse response = null;
        try {
            response = reader.city(ipAddress);

      // 获取国家信息
      Country country = response.getCountry();
      System.out.println(country.getIsoCode());               // 'CN'
      System.out.println(country.getName());                  // 'China'
      System.out.println(country.getNames().get("zh-CN"));    // '中国'

      // 获取省份
      Subdivision subdivision = response.getMostSpecificSubdivision();
      System.out.println(subdivision.getName());   // 'Guangxi Zhuangzu Zizhiqu'
      System.out.println(subdivision.getIsoCode()); // '45'
      System.out.println(subdivision.getNames().get("zh-CN")); // '广西壮族自治区'

      // 获取城市
      City city = response.getCity();
      System.out.println(city.getName()); // 'Nanning'
      Postal postal = response.getPostal();
      System.out.println(postal.getCode()); // 'null'
      System.out.println(city.getNames().get("zh-CN")); // '南宁'
      Location location = response.getLocation();
      System.out.println(location.getLatitude());  // 22.8167
      System.out.println(location.getLongitude()); // 108.3167
        } catch (GeoIp2Exception e) {
            e.printStackTrace();
        }     

}  

这个就很快了，不过只能获取到城市。