根据ip获取location（国家、城市、区号等）信息（亲测可行，我自己就在用）

最近需要根据ip地址获取国家和城市信息。我有两种解决方法。一种是阿里的提供的restful api。传入ip，请求对应的url。即可返回json数据，解析json即可。但是这种就依赖于阿里的api。个人觉得可能还是需要有一个自己的ip地址库会好一些，于是我选择了geoip2来根据ip获取location信息。

1、 阿里的提供的restful api

 http://ip.taobao.com/service/getIpInfo.php?ip=  需要的ip地址

2. springmvc下geoip2获取location实现(亲测可行。以下代码直接copy即可用)

maven的pom.xml里导入geoip2

com.maxmind.geoip2
geoip2
2.2.0

下载最新的GeoLite2-City.mmdb和GeoLiteCity.dat

可以到官网下载或者在我的csdn资源库下载：

我的csdn资源库：https://download.csdn.net/download/qq_23832313/10501973

使用实体类保存国家信息

public class GeoLocation {
private String countryCode;
private String countryName;
private String region;
private String regionName;
private String city;
private String postalCode;
private String latitude;
private String longitude;


public String getCountryCode() {
return countryCode;
}


public void setCountryCode(String countryCode) {
this.countryCode = countryCode;
}


public String getCountryName() {
return countryName;
}


public void setCountryName(String countryName) {
this.countryName = countryName;
}


public String getRegion() {
return region;
}


public void setRegion(String region) {
this.region = region;
}


public String getRegionName() {
return regionName;
}


public void setRegionName(String regionName) {
this.regionName = regionName;
}


public String getCity() {
return city;
}


public void setCity(String city) {
this.city = city;
}


public String getPostalCode() {
return postalCode;
}


public void setPostalCode(String postalCode) {
this.postalCode = postalCode;
}


public String getLatitude() {
return latitude;
}


public void setLatitude(String latitude) {
this.latitude = latitude;
}


public String getLongitude() {
return longitude;
}


public void setLongitude(String longitude) {
this.longitude = longitude;
}


@Override
public String toString() {
return "GeoLocation [countryCode=" + countryCode + ", countryName="
+ countryName + ", region=" + region + ", regionName="
+ regionName + ", city=" + city + ", postalCode=" + postalCode
+ ", latitude=" + latitude + ", longitude=" + longitude + "]";
}

service层实现：

package com.ninesword.nsclick.service;


import java.io.File;
import java.io.IOException;
import java.net.InetAddress;
import java.net.URL;


import javax.servlet.http.HttpServletRequest;


import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;


import com.maxmind.geoip2.DatabaseReader;
import com.maxmind.geoip2.exception.GeoIp2Exception;
import com.maxmind.geoip2.model.CityResponse;
import com.maxmind.geoip2.record.City;
import com.maxmind.geoip2.record.Country;
import com.maxmind.geoip2.record.Subdivision;
import com.ninesword.nsclick.entity.GeoLocation;
import com.ninesword.utils.CommonUtil;






// Spring Bean的标识.
@Component
public class GeoLocationService {


private DatabaseReader reader;
private static Logger logger = LoggerFactory.getLogger(GeoLocationService.class);


public GeoLocationService() {
String dataFile = "location/GeoLite2-City.mmdb";
URL url = getClass().getClassLoader().getResource(dataFile);


if (url == null) {
System.err.println("location database is not found - " + dataFile);
} else {
try {
File database = new File(url.getPath());
reader = new DatabaseReader.Builder(database).build();
} catch (Exception e) {
e.printStackTrace();
}
}
}


/**
* 获取ip地址映射的国家
* @param ipAddress
* @return
*/
public GeoLocation getLocationFromRequest(String ip) {
GeoLocation location = getLocationV2(ip);
return location;
}

/**
* 获取ip地址
* @param request
* @return
*/
public String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
logger.info("Ip from user agent: {}", ip);
// 多个反向代理IP时，取第一个
int commaOffset = ip.indexOf(',');
if (commaOffset < 0) {
ip = ip.equals("0:0:0:0:0:0:0:1") ? "61.183.88.58" : ip;
return ip;
}
ip = ip.substring(0, commaOffset);

ip = ip.equals("0:0:0:0:0:0:0:1") ? "61.183.88.58" : ip;

return ip;
}


/**
* 获取ip地址映射的国家
* @param ipAddress
* @return
*/
private GeoLocation getLocationV2(String ipAddress) {
GeoLocation geoLocation = null;
if (null == reader) {
//System.err.println("location database is not found.");
logger.error("location database is not found.");
} else {
try {
geoLocation = new GeoLocation();
InetAddress ipAdd = InetAddress.getByName(ipAddress);
CityResponse response = reader.city(ipAdd);


Country country = response.getCountry();
geoLocation.setCountryCode(country.getIsoCode());
geoLocation.setCountryName(country.getName());


Subdivision subdivision = response.getMostSpecificSubdivision();
geoLocation.setRegionName(subdivision.getName());


City city = response.getCity();
geoLocation.setCity(city.getName());
geoLocation.setPostalCode(response.getPostal().getCode());
geoLocation.setLatitude(String.valueOf(response.getLocation().getLatitude()));
geoLocation.setLongitude(String.valueOf(response.getLocation().getLongitude()));
} catch (IOException e) {
e.printStackTrace();
logger.error(e.getMessage());
} catch (GeoIp2Exception e) {
e.printStackTrace();
logger.error(e.getMessage());
}
}
return geoLocation;
}
}