程序包 org.springframework.web.bind.annotation

注释类型 ControllerAdvice

  • @Target(TYPE)
@Retention(RUNTIME)
@Documented
@Component
public @interface ControllerAdvice
    Specialization of @Component for classes that declare @ExceptionHandler, @InitBinder, or @ModelAttribute methods to be shared across multiple @Controller classes.

    Classes annotated with @ControllerAdvice can be declared explicitly as Spring beans or auto-detected via classpath scanning. All such beans are sorted based on @Order semantics and applied in that order at runtime. For handling exceptions, an @ExceptionHandler will be picked on the first advice with a matching exception handler method. For model attributes and InitBinder initialization, @ModelAttribute and @InitBinder methods will also follow @ControllerAdvice order.

    Note: For @ExceptionHandler methods, a root exception match will be preferred to just matching a cause of the current exception, among the handler methods of a particular advice bean. However, a cause match on a higher-priority advice will still be preferred over any match (whether root or cause level) on a lower-priority advice bean. As a consequence, please declare your primary root exception mappings on a prioritized advice bean with a corresponding order.

    By default the methods in an @ControllerAdvice apply globally to all controllers. Use selectors such as annotations(), basePackageClasses(), and basePackages() (or its alias value()) to define a more narrow subset of targeted controllers. If multiple selectors are declared, OR logic is applied, meaning selected controllers should match at least one selector. Note that selector checks are performed at runtime, so adding many selectors may negatively impact performance and add complexity.

    从以下版本开始:
    3.2
    作者:
    Rossen Stoyanchev, Brian Clozel, Sam Brannen

    • 元素详细资料

      • value

        @AliasFor("basePackages")
String[] value
        Alias for the basePackages() attribute.

        Allows for more concise annotation declarations e.g.: @ControllerAdvice("org.my.pkg") is equivalent to @ControllerAdvice(basePackages="org.my.pkg").

        从以下版本开始:
        4.0
        另请参阅:
        basePackages()
        默认值:
        {}

      • basePackages

        @AliasFor("value")
String[] basePackages
        Array of base packages.

        Controllers that belong to those base packages or sub-packages thereof will be included, e.g.: @ControllerAdvice(basePackages="org.my.pkg") or @ControllerAdvice(basePackages={"org.my.pkg", "org.my.other.pkg"}).

        value() is an alias for this attribute, simply allowing for more concise use of the annotation.

        Also consider using basePackageClasses() as a type-safe alternative to String-based package names.

        从以下版本开始:
        4.0
        默认值:
        {}

      • basePackageClasses

        Class<?>[] basePackageClasses
        Type-safe alternative to value() for specifying the packages to select Controllers to be assisted by the @ControllerAdvice annotated class.

        Consider creating a special no-op marker class or interface in each package that serves no purpose other than being referenced by this attribute.

        从以下版本开始:
        4.0
        默认值:
        {}

      • assignableTypes

        Class<?>[] assignableTypes
        Array of classes.

        Controllers that are assignable to at least one of the given types will be assisted by the @ControllerAdvice annotated class.

        从以下版本开始:
        4.0
        默认值:
        {}

      • annotations

        Class<? extends Annotation>[] annotations
        Array of annotations.

        Controllers that are annotated with this/one of those annotation(s) will be assisted by the @ControllerAdvice annotated class.

        Consider creating a special annotation or use a predefined one, like @RestController.

        从以下版本开始:
        4.0
        默认值:
        {}