如何从javax.lang.model.VariableElement获取参数类型

问题描述

我正在尝试使用Java 6元模型API查找方法的参数类型.如果类型是枚举，我也想知道所有类型的枚举常量名称.这是到目前为止我得到的:

I'm trying to find the types of the parameters of a method using the Java 6 metamodel API. If the type is an enum,I'd also like to know all of it's type's enum constant names. Here's what I've got so far:

for (Element member : members) {
    if(member.getKind() == ElementKind.METHOD) {
        ExecutableElement methodElement = (ExecutableElement) member;
        List<? extends VariableElement> parameters = methodElement.getParameters();
        for (VariableElement parameter : parameters) {
            //How do I get the type of the parameter here?
        }
    }
}

推荐答案

Element#asType()获取DeclaredType.

Element#asType() gets you the DeclaredType.

对于枚举，请使用 Types#使用带有DeclaredType的asElement()来获取枚举类型的元素，然后使用ElementVisitor或使用getEnclosedElements()对成员进行迭代.

For enums, use Types#asElement() with the DeclaredType to get the enum type's element, and then iterate over the members using either an ElementVisitor or by using getEnclosedElements().

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