org.springframework.web.method.annotation

Class ExceptionHandlerMethodResolver

java.lang.Object

org.springframework.web.method.annotation.ExceptionHandlerMethodResolver

public class ExceptionHandlerMethodResolver
extends Object

Discovers annotated exception handling methods in a given class type, including all super types, and helps to resolve an Exception to a method that can handle it. The exception types supported by a given method can also be discovered from the method signature.

Since:

3.1

Author:

Rossen Stoyanchev

Field Summary

Fields

Modifier and Type	Field and Description
static ReflectionUtils.MethodFilter	EXCEPTION_HANDLER_METHODS A filter for selecting annotated exception handling methods.

Constructor Summary

Constructors

Constructor and Description
ExceptionHandlerMethodResolver(Class<?> handlerType) A constructor that finds ExceptionHandler methods in the given type.

Method Summary

Modifier and Type	Method and Description
protected void	detectAnnotationExceptionMappings(Method method, List<Class<? extends Throwable>> result)
boolean	hasExceptionMappings() Whether the contained type has any exception mappings.
Method	resolveMethod(Exception exception) Find a method to handle the given exception.
Method	resolveMethodByExceptionType(Class<? extends Exception> exceptionType) Find a method to handle the given exception type.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EXCEPTION_HANDLER_METHODS

public static final ReflectionUtils.MethodFilter EXCEPTION_HANDLER_METHODS

A filter for selecting annotated exception handling methods.

Constructor Detail

ExceptionHandlerMethodResolver

public ExceptionHandlerMethodResolver(Class<?> handlerType)

A constructor that finds ExceptionHandler methods in the given type.

Parameters:

handlerType - the type to introspect

Method Detail

detectAnnotationExceptionMappings

protected void detectAnnotationExceptionMappings(Method method,
                                                 List<Class<? extends Throwable>> result)

hasExceptionMappings

public boolean hasExceptionMappings()

Whether the contained type has any exception mappings.

resolveMethod

public Method resolveMethod(Exception exception)

Find a method to handle the given exception. Use ExceptionDepthComparator if more than one match is found.

Parameters:

exception - the exception

Returns:

a method to handle the exception or null

resolveMethodByExceptionType

public Method resolveMethodByExceptionType(Class<? extends Exception> exceptionType)

Find a method to handle the given exception type. This can be useful if an Exception instance is not available (example for tools).

Parameters:

exceptionType - the exception type

Returns:

a method to handle the exception or null