递归列出包中定义的所有枚举 [英] List all enums defined in a package recursively

问题描述

使用 org.reflections API来发现它不适用于 Enums :

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!

还有其他方法吗?

推荐答案

您不需要那么多的仪式代码，只需尝试以下代码段即可.

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

Enums 扩展了 java.lang.Enum ，而Object仅扩展了 Java.lang

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

修改后的代码才能正常工作

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);

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