java-实现通过IP地址查询归属地的功能

前文：

• 通过解析IP地址，返回该IP地址对应国名、身份/一级行政区、地级市/二级行政区、网络运营商（移动、联通、电信）。

效果图如下：

例子如下：

• 导入文件：ip2region.db（存放城市信息的数据文件）
  • 下载ip2region.db文件
• 调用例子：

public static void main(String[] args) {String ipAddress = "IP地址";AttributionVo detail = IPUtil.getCityInfo(ipAddress);System.out.println("输入的IP为：" + ipAddress + "，返回的结果为：" +detail);
}

• 工具类IPUtil,java：

package com.alex.examples.entity;import com.alex.examples.vo.AttributionVo;
import org.lionsoul.ip2region.DataBlock;
import org.lionsoul.ip2region.DbConfig;
import org.lionsoul.ip2region.DbSearcher;
import org.lionsoul.ip2region.Util;
import org.springframework.util.ResourceUtils;import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.lang.reflect.Method;public class IPUtil {/*** 获取IP地址** @param request* @return*/public static String getIpAddr(HttpServletRequest request) {String ip = request.getHeader("x-forwarded-for");if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("X-Real-IP");}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();}if ("0:0:0:0:0:0:0:1".equals(ip)) {ip = "127.0.0.1";}if (ip.split(",").length > 1) {ip = ip.split(",")[0];}return ip;}/*** 根据IP地址获取城市** @param ip* @return*/public static AttributionVo getCityInfo(String ip) {AttributionVo vo = new AttributionVo();File file = null;try {Integer systemType = isSystemType();if (systemType == 0) {file = ResourceUtils.getFile("classpath:ip2region.db");}if (systemType == 1) {file = ResourceUtils.getFile("/home/caixiaojiong/jar/ip2region.db");}} catch (FileNotFoundException e) {e.printStackTrace();}if (!file.exists()) {System.out.println("Error: Invalid ip2region.db file, filePath：" + file.getPath());return vo;}//查询算法int algorithm = DbSearcher.BTREE_ALGORITHM; //B-tree//DbSearcher.BINARY_ALGORITHM //Binary//DbSearcher.MEMORY_ALGORITYM //Memorytry {DbConfig config = new DbConfig();DbSearcher searcher = new DbSearcher(config, file.getPath());Method method;switch (algorithm) {case DbSearcher.BTREE_ALGORITHM:method = searcher.getClass().getMethod("btreeSearch", String.class);break;case DbSearcher.BINARY_ALGORITHM:method = searcher.getClass().getMethod("binarySearch", String.class);break;case DbSearcher.MEMORY_ALGORITYM:method = searcher.getClass().getMethod("memorySearch", String.class);break;default:return null;}DataBlock dataBlock;if (!Util.isIpAddress(ip)) {System.out.println("Error: Invalid ip address");return vo;}dataBlock = (DataBlock) method.invoke(searcher, ip);String[] result = dataBlock.getRegion().split("\\|");vo.setNationName(result[0]);vo.setProvince(result[2]);vo.setCity(result[3]);vo.setOperator(result[4]);return vo;} catch (Exception e) {e.printStackTrace();}return null;}public static boolean isLinux() {return System.getProperty("os.name").toLowerCase().contains("linux");}public static boolean isWindows() {return System.getProperty("os.name").toLowerCase().contains("windows");}/*** 判断当前系统是windows系统还是linux系统** @return*/public static Integer isSystemType() {Integer isSystemType = 0;boolean isWindows = isWindows();if (isWindows) { //是windows系统isSystemType = 0;return isSystemType;}boolean isLinux = isLinux();if (isLinux) { //是linux系统isSystemType = 1;return isSystemType;}return isSystemType;}
}

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