依赖第三方接口，根据IP获取地理位置，Java实现代码如下：
import com.google.gson.Gson;

import com.google.gson.internal.LinkedTreeMap;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.URL;

import java.net.URLConnection;

import java.util.HashMap;



//根据IP获取国家省份城市

public class IPAnalyse {



    public static void main(String[] args) throws IOException {

        String ip = "61.157.45.92";

        String add[] = getAddressByIP1(ip);

        System.out.println("国家："+ add[0] +"，省份："+ add[1] +"，城市："+add[2]);



    }



    public static String[] getAddressByIP1(String strIP) throws IOException {

        URL url = new URL("http://ip.taobao.com/service/getIpInfo.php?ip=" + strIP);

        URLConnection conn = url.openConnection();

        BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));

        String line = null;

        StringBuilder result = new StringBuilder();

        while ((line = reader.readLine()) != null) {

            result.append(line);

        }

        reader.close();

        String res = result.toString();

        Gson gson = new Gson();

        HashMap<String, Object> kv = gson.fromJson(res, HashMap.class);

        LinkedTreeMap map = (LinkedTreeMap) kv.get("data");

        String[] location = new String[3];

        location[0] = "";   //国家

        location[1] = "";   //省份

        location[2] = "";   //市区

        if ((map != null) && (!map.isEmpty())) {

            location[0] = (String) map.get("country");

            location[1] = (String) map.get("region");

            location[2] = (String) map.get("city");

        }

        return location;

    }



}

                    

使用到的是淘宝提供的API


1. 请求接口（GET）：

http://ip.taobao.com/service/getIpInfo.php?ip=[ip地址字串]

2. 响应信息：

（json格式的）国家 、省（自治区或直辖市）、市（县）、运营商

3. 返回数据格式：
{"code":0,"data":{"ip":"210.75.225.254","country":"\u4e2d\u56fd","area":"\u534e\u5317",

"region":"\u5317\u4eac\u5e02","city":"\u5317\u4eac\u5e02","county":"","isp":"\u7535\u4fe1",

"country_id":"86","area_id":"100000","region_id":"110000","city_id":"110000",

"county_id":"-1","isp_id":"100017"}}



















本文转自 hgditren 51CTO博客，原文链接：http://blog.51cto.com/phpme/1580012，如需转载请自行联系原作者

        
        
                
    

依赖第三方接口，根据IP获取地理位置，Java实现代码如下： 

import com.google.gson.Gson; 

import com.google.gson.internal.LinkedTreeMap; 

import java.io.BufferedReader; 

import java.io.IOException; 

import java.io.InputStreamReader; 

import java.net.URL; 

import java.net.URLConnection; 

import java.util.HashMap;

//根据IP获取国家省份城市 

public class IPAnalyse {

public static void main(String[] args) throws IOException {
    String ip = "61.157.45.92";
    String add[] = getAddressByIP1(ip);
    System.out.println("国家："+ add[0] +"，省份："+ add[1] +"，城市："+add[2]);


}


public static String[] getAddressByIP1(String strIP) throws IOException {
    URL url = new URL("http://ip.taobao.com/service/getIpInfo.php?ip=" + strIP);
    URLConnection conn = url.openConnection();
    BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
    String line = null;
    StringBuilder result = new StringBuilder();
    while ((line = reader.readLine()) != null) {
        result.append(line);
    }
    reader.close();
    String res = result.toString();
    Gson gson = new Gson();
    HashMap<String, Object> kv = gson.fromJson(res, HashMap.class);
    LinkedTreeMap map = (LinkedTreeMap) kv.get("data");
    String[] location = new String[3];
    location[0] = "";   //国家
    location[1] = "";   //省份
    location[2] = "";   //市区
    if ((map != null) && (!map.isEmpty())) {
        location[0] = (String) map.get("country");
        location[1] = (String) map.get("region");
        location[2] = (String) map.get("city");
    }
    return location;
}


}

关于“纯真IP库”，文章推荐：http://lumaqq.linuxsir.org/article/qqwry_format_detail.html

纯真IP库实现根据IP获取地理位置