org.springframework.web.method.annotation

Class ExceptionHandlerMethodResolver

java.lang.Object

org.springframework.web.method.annotation.ExceptionHandlerMethodResolver

public class ExceptionHandlerMethodResolver
extends java.lang.Object

Discovers @ExceptionHandler methods in a given class, including all of its superclasses, and helps to resolve a given Exception to the exception types supported by a given Method.

Since:

3.1

Author:

Rossen Stoyanchev, Juergen Hoeller

Field Summary

Fields

Modifier and Type	Field and Description
static ReflectionUtils.MethodFilter	EXCEPTION_HANDLER_METHODS A filter for selecting @ExceptionHandler methods.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
boolean	hasExceptionMappings() Whether the contained type has any exception mappings.
java.lang.reflect.Method	resolveMethod(java.lang.Exception exception) Find a Method to handle the given exception.
java.lang.reflect.Method	resolveMethodByExceptionType(java.lang.Class<? extends java.lang.Throwable> exceptionType) Find a Method to handle the given exception type.
java.lang.reflect.Method	resolveMethodByThrowable(java.lang.Throwable exception) Find a Method to handle the given Throwable.

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 @ExceptionHandler methods.

Constructor Detail

ExceptionHandlerMethodResolver

public ExceptionHandlerMethodResolver(java.lang.Class<?> handlerType)

A constructor that finds ExceptionHandler methods in the given type.

Parameters:

handlerType - the type to introspect

Method Detail

hasExceptionMappings

public boolean hasExceptionMappings()

Whether the contained type has any exception mappings.

resolveMethod

@Nullable
public java.lang.reflect.Method resolveMethod(java.lang.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 if none found

resolveMethodByThrowable

@Nullable
public java.lang.reflect.Method resolveMethodByThrowable(java.lang.Throwable exception)

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

Parameters:

exception - the exception

Returns:

a Method to handle the exception, or null if none found

Since:

5.0

resolveMethodByExceptionType

@Nullable
public java.lang.reflect.Method resolveMethodByExceptionType(java.lang.Class<? extends java.lang.Throwable> exceptionType)

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

Parameters:

exceptionType - the exception type

Returns:

a Method to handle the exception, or null if none found