@ControllerAdvice 和 @ExceptionHandler

terrorist2008

于 2018-05-15 17:46:23 发布

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本文介绍如何利用Spring MVC中的@ControllerAdvice注解实现对所有控制器的全局异常处理及不同类型的控制器目标选择策略，包括针对特定注解、包路径及接口实现的控制器。

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@ControllerAdvice

The @ControllerAdvice annotation is a component annotation allowing implementation classes to be auto-detected through classpath scanning. It is automatically enabled when using the MVC namespace or the MVC Java config.

// Target all Controllers annotated with @RestController
@ControllerAdvice(annotations = RestController.class)
public class AnnotationAdvice {}

// Target all Controllers within specific packages
@ControllerAdvice("org.example.controllers")
public class BasePackageAdvice {}

// Target all Controllers assignable to specific classes
@ControllerAdvice(assignableTypes = {ControllerInterface.class, AbstractController.class})
public class AssignableTypesAdvice {}

@ExceptionHandler

You can declare an @ExceptionHandler method within an @ControllerAdvice class in which case it handles exceptions from @RequestMappingmethods from many controllers.