Is there an easy way to get class/field/method using specific annotations?

@MyAnnotation
public class FatherController {
    @MyAnnotation
    public void speakWhat() {
        System.out.println("Speak what");
    }
}

Like the code above, I need to get class FatherController and method speakWhat()

You should find the annotation PsiClass and pass it to the search method. Example:

PsiClass psiClass = JavaPsiFacade.getInstance(project).findClass("com.example.MyAnnotation", scope) // scope: e.g. GlobalSearchScope.projectScope() or another, depending on your needs
if (psiClass != null) {
  AnnotatedElementsSearch.searchPsiMembers(psiClass, scopeForFindingAnnotatedMembers).forEach(...)
}

Thank you very much!❤️❤️❤️
I've complety solved the problem!

Karol Lewandowski

I met another problem that the searching result lost some results:

I have two class(One is FatherController).

FatherController.java

@DeepLock(userName = "Jacky")
public class FatherController {
    @DynamicLock
    @DeepLock(userName = "Mick")
    public void speakWhat() {
        System.out.println("Speak what");
    }

    public void eat() {
        System.out.println("Eat");
    }
}

Another is TestController:

TestController.java

import java.util.List;

@DeepLock(userName = "Test user")
public class TestController extends FatherController{

    @DeepLock(userName = "Test user")
    void showRed() {
        System.out.println("This function's background should be red");
    }
    @DeepLock(userName = "nihao")
    void showGreen() {
        System.out.println("This function's background should be green");
    }

    @Override
    public void speakWhat() {
        super.speakWhat();
        System.out.println("After that, just do it");
    }
    public static void Main() {
        System.out.println("hello");
    }
}

However, I use the code below:

GlobalSearchScope scope = GlobalSearchScope.allScope(project);
// get DeepLock annotation
PsiClass deepLockClass =
        JavaPsiFacade.getInstance(project).findClass("DeepLock", GlobalSearchScope.allScope(project));
if (deepLockClass == null || !deepLockClass.isAnnotationType()) {
    return deepLockRegionList;
}
// get annotated Member
Query<PsiMember> psiMemberQuery = AnnotatedElementsSearch.searchPsiMembers(deepLockClass, scope);
List<PsiMember> memberList = new ArrayList<>(psiMemberQuery.findAll());
List<PsiClass> classList = new ArrayList<>(AnnotatedElementsSearch.searchPsiClasses(deepLockClass, scope).findAll());
System.out.println("Total deepLock number: " + memberList.size());
System.out.println("Then classes:" + classList.size());

The output is missing some results, where the annotation for TestController is totally missed.

Total deepLock number: 2
Then classes:1

Plus: I copy a same class (rename TestController to SonController). While TestController cannot be found, SonController can. How?

Hi,

It's unclear what the reason is.

Is the class that is not found in the project scope? Maybe indexes are broken/not up-to-date (try to clear them with File | Invalidate Caches... and see if the class is found after IDE restart)?