How can I get generic type of PsiField

Question

I'm developing a Intellij Idea plugin,I want to get all fields info of a class.But I meet with difficulties which I can not get generic type of PsiField. Such as:

private String[] stringsArr;
private List<String> stringList;
private List<BeanLog> beanLogList;

How to get the PsiClass of 'BeanLog' from PsiField ?

Answer 1

field.getType() returns PsiClassType List<BeanLog>. Its fieldType.getParameters()[0] will be PsiClassType BeanLog. If you want to extract a collection component type in a generic way (not only from List), then you can use PsiUtil.extractIterableTypeParameter(fieldType, false). To get PsiClass from PsiClassType, you can use type.resolve() or PsiUtil.resolveClassInClassTypeOnly.