spring 引导中的 @NotNull 无法按预期工作

Question

This is my DTO class:

public class AppDTO implements Serializable {

    private String appId;

    private Date dateCreated;

    @AppFeaturesValidation
    private Set<AppFeature> appFeatures;

}

The @AppFeaturesValidation validate the content of appFeatures.

This is the AppFeature class:

public class AppFeature {

    private String packageId;

    @NotNull
    private Boolean isEnabled;

    @NotNull
    private Boolean isDisplayed;

}

When I send to this value null - it gets it. In the same project, a different type using @NotNull is working. The same imports for this annotation, just a simpler object:

public class packDTO implements Serializable {

    private String packId;

    private Date dateCreated;

    @NotNull
    private Boolean clone;

}

Answer 1

I had to add @Valid for the appFeatures Set, so the validations will be checked for each of the elements.