List all enums defined in a package recursively

问题

Was using org.reflections API to find that it doesn't work with Enums:

List<ClassLoader> classLoadersList = new LinkedList<>();
classLoadersList.add(ClasspathHelper.contextClassLoader());
classLoadersList.add(ClasspathHelper.staticClassLoader());
Reflections reflections = new Reflections(new org.reflections.util.ConfigurationBuilder()
.setScanners(new SubTypesScanner(false), new ResourcesScanner())
.setUrls(ClasspathHelper.forClassLoader(classLoadersList.toArray(new ClassLoader[0])))
.filterInputsBy(new FilterBuilder().include(FilterBuilder.prefix("my.package"))));

Set<Class<? extends Object>> allClasses = reflections.getSubTypesOf(Enum.class); 

// Above line should've returned all enums recursively, doesn't work!

Any alternate ways?

回答1:

You don't require so much ceremonial codes, just try the below snippet.

Enums extends java.lang.Enum while Object just Java.lang

Modified code to work properly should be:

 Reflections reflections = new Reflections("newPackaes");

    Set<Class<? extends Enum>> allClasses =
            reflections.getSubTypesOf(Enum.class);
    System.out.println(allClasses);

来源：https://stackoverflow.com/questions/59486326/list-all-enums-defined-in-a-package-recursively