List<URL> resources = new ArrayList<>();
try {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();

Enumeration<URL> importedResources = classLoader.getResources("META-INF/services");
while (importedResources.hasMoreElements()) {
    resources.add(importedResources.nextElement());
}

Map<String, String> fileContents = Maps.newHashMap();

for (URL resource : resources) {
    InputStream stream = classLoader.getResourceAsStream(resource.getFile());
    Properties props = new Properties(); // for debug
    props.load(stream); // for debug
    BufferedReader reader = new BufferedReader(new InputStreamReader(resource.openStream()));
    String line;
    while ((line = reader.readLine()) != null) { // Line is always null except for the declarations in my own project
        String fileName = line;
        if (!fileName.endsWith("/")) {
            URL fileUrl = new URL(resource + "\\" + fileName);
            BufferedReader fileReader = new BufferedReader(new InputStreamReader(fileUrl.openStream()));
            StringBuilder content = new StringBuilder();
            String fileLine;
            while ((fileLine = fileReader.readLine()) != null) {
                content.append(fileLine);
            }
            fileReader.close();
            fileContents.put(fileName, content.toString());
        }
    }
}
System.out.println(fileContents);

} catch (IOException e) {
throw new RuntimeException(e);
}

我一直在尝试读取项目中的服务声明文件（然后将它们保存为Map，其中Interface名称作为键，Provider名称作为值），包括来自导入Jars的服务声明文件，但在从JARS内部阅读文件时遇到了问题。URL资源将正确加载，importedResources确实包含文件的URI，但当尝试读取Line时，它将返回null。
项目是Maven，URL看起来像这样：

jar:file:/C:/Users/xxx/.m2/repository/org/glassfish/hk2/hk2-locator/2.5.0-b42/hk2-locator-2.5.0-b42.jar!/META-INF/services

有什么建议吗？还是有别的办法