Java利用Request请求如何获取IP地址对应的省份、城市详解

public class IpAdrressUtil {
 /**
 * 获取Ip地址
 * @param request
 * @return
 */
 private static String getIpAdrress(HttpServletRequest request) {
 String Xip = request.getHeader("X-Real-IP");
 String XFor = request.getHeader("X-Forwarded-For");
 if(StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)){
 //多次反向代理后会有多个ip值，第一个ip才是真实ip
 int index = XFor.indexOf(",");
 if(index != -1){
 return XFor.substring(0,index);
 }else{
 return XFor;
 }
 }
 XFor = Xip;
 if(StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)){
 return XFor;
 }
 if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
 XFor = request.getHeader("Proxy-Client-IP");
 }
 if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
 XFor = request.getHeader("WL-Proxy-Client-IP");
 }
 if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
 XFor = request.getHeader("HTTP_CLIENT_IP");
 }
 if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
 XFor = request.getHeader("HTTP_X_FORWARDED_FOR");
 }
 if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
 XFor = request.getRemoteAddr();
 }
 return XFor;
 }
}

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

public static void main(String[] args) throws Exception{ 
 // 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 = 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

} 

import com.maxmind.geoip2.DatabaseReader;
import com.maxmind.geoip2.model.CityResponse;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;
import java.io.File;
import java.net.InetAddress;

/**
 * IP地址服务
 */
@Service
public class IpAddressService {

 private static Logger logger = LoggerFactory.getLogger(IpAddressService.class);

 private static String dbPath = "/usr/local/GeoLite2-City.mmdb";

 private static DatabaseReader reader;

 @Autowired
 private Environment env;

 @PostConstruct
 public void init() {
 try {
 String path = env.getProperty("geolite2.city.db.path");
 if (StringUtils.isNotBlank(path)) {
 dbPath = path;
 }
 File database = new File(dbPath);
 reader = new DatabaseReader.Builder(database).build();
 } catch (Exception e) {
 logger.error("IP地址服务初始化异常:" + e.getMessage(), e);
 }
 }


 public String getSubdivision(String ipAddress){
 try {
 CityResponse response = reader.city(InetAddress.getByName(ipAddress));
 return response.getMostSpecificSubdivision().getNames().get("zh-CN");
 }catch (Exception e){
 logger.error("根据IP[{}]获取省份失败:{}", ipAddress, e.getMessage());
 return null;
 }
 }
}

String areaNames = {"北京","天津","上海"};
String subdivision = ipAddressService.getSubdivision(getIpAdrress(request));
 // 匹配
 if(containsArea(subdivision, areaNames)){
 // 处理...
 }

 private boolean containsArea(String name, String[] areaNames) {
 if(StringUtils.isBlank(name)){
 return false;
 }
 for(String areaName : areaNames){
 if(name.contains(areaName)){
 return true;
 }
 }
 return false; // 按地域返回数据
 }