Minimal reproducible example

See ActionService and ActionServiceTest where the following @PreAuthorize SpEL is used:

@PreAuthorize("#action.getUserId() == 1")

Run

./gradlew test

Expected

Build success

Actual

Fails with:

Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1004E: Method call: Method getUserId() cannot be found on type java.lang.Object[]

Because in org.springframework.expression.spel.ast.MethodReference the targetObject is not of the expected Type Action but of type Object[] holding

[0] = "Action(userId=1)"
[1] = "Continuation at com.example.demoActionServiceTest$save...."

Workaround

Adding [0] works:

@PreAuthorize("#action[0].getUserId() == 1")