从classpath目录获取资源列表

Custom Scanner

实施自己的扫描仪。例如：

private List<String> getResourceFiles(String path) throws IOException {    List<String> filenames = new ArrayList<>();    try ( InputStream in = getResourceAsStream(path); BufferedReader br = new BufferedReader(new InputStreamReader(in)))        String resource;        while ((resource = br.readLine()) != null) { filenames.add(resource);        }    }    return filenames;}private InputStream getResourceAsStream(String resource) {    final InputStream in = getContextClassLoader().getResourceAsStream(resource);    return in == null ? getClass().getResourceAsStream(resource) : in;}private ClassLoader getContextClassLoader() {    return Thread.currentThread().getContextClassLoader();}

Spring framework

PathMatchingResourcePatternResolver从Spring framework使用。

Ronmamo Reflections

对于巨大的CLASSPATH值，其他技术在运行时可能很慢。更快的解决方案是使用ronmamo的Reflections API，该API在编译时对搜索进行预编译。