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@@ -0,0 +1,70 @@
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+package com.ruoyi.common.core.utils.ip;
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+
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+import cn.hutool.core.io.FileUtil;
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+import cn.hutool.core.io.resource.ClassPathResource;
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+import cn.hutool.core.util.ObjectUtil;
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+import com.ruoyi.common.core.exception.ServiceException;
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+import com.ruoyi.common.core.utils.file.FileUtils;
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+import lombok.extern.slf4j.Slf4j;
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+import org.lionsoul.ip2region.xdb.Searcher;
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+
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+import java.io.File;
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+
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+/**
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+ * 根据ip地址定位工具类,离线方式
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+ * 参考地址:<a href="https://gitee.com/lionsoul/ip2region/tree/master/binding/java">集成 ip2region 实现离线IP地址定位库</a>
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+ *
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+ * @author lishuyan
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+ */
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+@Slf4j
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+public class RegionUtils {
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+
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+ private static final Searcher SEARCHER;
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+
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+ static {
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+ String fileName = "/ip2region.xdb";
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+ File existFile = FileUtils.file(FileUtil.getTmpDir() + FileUtil.FILE_SEPARATOR + fileName);
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+ if (!FileUtils.exist(existFile)) {
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+ ClassPathResource fileStream = new ClassPathResource(fileName);
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+ if (ObjectUtil.isEmpty(fileStream.getStream())) {
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+ throw new ServiceException("RegionUtils初始化失败,原因:IP地址库数据不存在!");
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+ }
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+ FileUtils.writeFromStream(fileStream.getStream(), existFile);
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+ }
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+
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+ String dbPath = existFile.getPath();
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+
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+ // 1、从 dbPath 加载整个 xdb 到内存。
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+ byte[] cBuff;
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+ try {
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+ cBuff = Searcher.loadContentFromFile(dbPath);
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+ } catch (Exception e) {
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+ throw new ServiceException("RegionUtils初始化失败,原因:从ip2region.xdb文件加载内容失败!" + e.getMessage());
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+ }
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+ // 2、使用上述的 cBuff 创建一个完全基于内存的查询对象。
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+ try {
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+ SEARCHER = Searcher.newWithBuffer(cBuff);
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+ } catch (Exception e) {
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+ throw new ServiceException("RegionUtils初始化失败,原因:" + e.getMessage());
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+ }
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+ }
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+
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+ /**
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+ * 根据IP地址离线获取城市
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+ */
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+ public static String getCityInfo(String ip) {
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+ try {
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+ ip = ip.trim();
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+ // 3、执行查询
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+ String region = SEARCHER.search(ip);
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+ return region.replace("0|", "").replace("|0", "");
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+ } catch (Exception e) {
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+ log.error("IP地址离线获取城市异常 {}", ip);
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+ return "未知";
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+ }
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+ }
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+
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+ public static void main(String[] args){
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+ System.out.println(RegionUtils.getCityInfo("175.169.65.25"));
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+ }
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+}
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