AbstractExceptionHandlerMethodResolver (Spring Framework 5.2.12.RELEASE API)

java.lang.Object
- org.springframework.messaging.handler.invocation.AbstractExceptionHandlerMethodResolver

Direct Known Subclasses:
AnnotationExceptionHandlerMethodResolver
```
public abstract class AbstractExceptionHandlerMethodResolver
extends Object
```
Cache exception handling method mappings and provide options to look up a method that should handle an exception. If multiple methods match, they are sorted using ExceptionDepthComparator and the top match is returned.
Since:
4.0
Author:
Rossen Stoyanchev, Juergen Hoeller

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`AbstractExceptionHandlerMethodResolver(Map<Class<? extends Throwable>,Method> mappedMethods)`	Protected constructor accepting exception-to-method mappings.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected static List<Class<? extends Throwable>>`	`getExceptionsFromMethodSignature(Method method)`	Extract the exceptions this method handles.This implementation looks for sub-classes of Throwable in the method signature.
`boolean`	`hasExceptionMappings()`	Whether the contained type has any exception mappings.
`Method`	`resolveMethod(Throwable exception)`	Find a `Method` to handle the given exception.
`Method`	`resolveMethodByExceptionType(Class<? extends Throwable> 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

- Constructor Detail
  - AbstractExceptionHandlerMethodResolver
```
protected AbstractExceptionHandlerMethodResolver(Map<Class<? extends Throwable>,Method> mappedMethods)
```
    Protected constructor accepting exception-to-method mappings.
- Method Detail
  - getExceptionsFromMethodSignature
```
protected static List<Class<? extends Throwable>> getExceptionsFromMethodSignature(Method method)
```
    Extract the exceptions this method handles.This implementation looks for sub-classes of Throwable in the method signature. The method is static to ensure safe use from sub-class constructors.
  - hasExceptionMappings
```
public boolean hasExceptionMappings()
```
    Whether the contained type has any exception mappings.
  - resolveMethod
```
@Nullable
public Method resolveMethod(Throwable 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
  - resolveMethodByExceptionType
```
@Nullable
public Method resolveMethodByExceptionType(Class<? extends 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
    Since:
    4.3.1