springboot项目中集成ip2region遇到的问题及终极解决办法

1、问题回顾

按照ip2region项目的官方集成到springboot项目后，运行测试一切都ok，没有任何问题。但是当项目打成可执行的jar包后再运行，却显示找不到ip2region.db，无法找到资源文件的错误。异常代码如下：

java.io.FileNotFoundException: class path resource [ip2region/ip2region.db] cannot be resolved to absolute file path because it does not reside in the file system: jar:file:/app.jar!/BOOT-INF/classes!/ip2region/ip2region.db

2、解决办法

将ip2region.db文件放到本地目录，然后直接读取本地文件进行ip解析，代码如下：

1public static String getCityInfo(String ip) {
2        DbSearcher searcher = null;
3        try {
4            String dbPath = GlobalConfig.getProfile() + "ip2region/ip2region.db";
5            //String dbPath = "f:/profile/ip2region/ip2region.db";  //本地测试使用地址
6            File file = new File(dbPath);
7            if (file.exists()) {
8                DbConfig config = new DbConfig();
9                searcher = new DbSearcher(config, file.getPath());
10                Method method = searcher.getClass().getMethod("btreeSearch", String.class);
11                if (!Util.isIpAddress(ip)) {
12                    log.error("Error: Invalid ip address");
13                }
14                DataBlock dataBlock = (DataBlock) method.invoke(searcher, ip);
15                return dataBlock.getRegion();
16            }
17        } catch (Exception e) {
18            log.error("获取地址信息异常：{}", e.getLocalizedMessage());
19        }
20        return "XX XX";
21}

注：GlobalConfig.getProfile()是配置的本地文件存储路径

代码地址：[代码下载]