java.lang.Object
- org.springframework.web.portlet.handler.AbstractHandlerExceptionResolver
- - org.springframework.web.portlet.handler.SimpleMappingExceptionResolver

All Implemented Interfaces:
Ordered, HandlerExceptionResolver
```
public class SimpleMappingExceptionResolver
extends AbstractHandlerExceptionResolver
```
HandlerExceptionResolver implementation that allows for mapping exception class names to view names, either for a set of given handlers or for all handlers in the DispatcherPortlet.
Error views are analogous to error page JSPs, but can be used with any kind of exception including any checked one, with fine-granular mappings for specific handlers.
Since:
2.0
Author:
Juergen Hoeller, John A. Lewis, Arjen Poutsma

Field Summary
Fields
Modifier and Type Field Description
static String DEFAULT_EXCEPTION_ATTRIBUTE
The default name of the exception attribute: "exception".
- Fields inherited from class org.springframework.web.portlet.handler.AbstractHandlerExceptionResolver
  logger
- Fields inherited from interface org.springframework.core.Ordered
  HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary
Constructors
Constructor Description
SimpleMappingExceptionResolver()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected String`	`determineViewName(Exception ex, PortletRequest request)`	Determine the view name for the given exception, searching the `"exceptionMappings"`, using the `"defaultErrorView"` as fallback.
`protected ModelAndView`	`doResolveException(PortletRequest request, MimeResponse response, Object handler, Exception ex)`	Actually resolve the given exception that got thrown during on handler execution, returning a ModelAndView that represents a specific error page if appropriate.
`protected String`	`findMatchingViewName(Properties exceptionMappings, Exception ex)`	Find a matching view name in the given exception mappings
`protected int`	`getDepth(String exceptionMapping, Exception ex)`	Return the depth to the superclass matching.
`protected ModelAndView`	`getModelAndView(String viewName, Exception ex)`	Return a ModelAndView for the given view name and exception.
`protected ModelAndView`	`getModelAndView(String viewName, Exception ex, PortletRequest request)`	Return a ModelAndView for the given request, view name and exception.
`void`	`setDefaultErrorView(String defaultErrorView)`	Set the name of the default error view.
`void`	`setExceptionAttribute(String exceptionAttribute)`	Set the name of the model attribute as which the exception should be exposed.
`void`	`setExceptionMappings(Properties mappings)`	Set the mappings between exception class names and error view names.

Methods inherited from class org.springframework.web.portlet.handler.AbstractHandlerExceptionResolver
buildLogMessage, getOrder, logException, resolveException, resolveException, setMappedHandlerClasses, setMappedHandlers, setOrder, setRenderWhenMinimized, setWarnLogCategory, shouldApplyTo

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEFAULT_EXCEPTION_ATTRIBUTE
```
public static final String DEFAULT_EXCEPTION_ATTRIBUTE
```
    The default name of the exception attribute: "exception".
    See Also:
    Constant Field Values
- Constructor Detail
  - SimpleMappingExceptionResolver
```
public SimpleMappingExceptionResolver()
```
- Method Detail
  - setExceptionMappings
```
public void setExceptionMappings(Properties mappings)
```
    Set the mappings between exception class names and error view names. The exception class name can be a substring, with no wildcard support at present. A value of "PortletException" would match javax.portet.PortletException and subclasses, for example.
    NB: Consider carefully how specific the pattern is, and whether to include package information (which isn't mandatory). For example, "Exception" will match nearly anything, and will probably hide other rules. "java.lang.Exception" would be correct if "Exception" was meant to define a rule for all checked exceptions. With more unusual exception names such as "BaseBusinessException" there's no need to use a FQN.
    Follows the same matching algorithm as RuleBasedTransactionAttribute and RollbackRuleAttribute.
    Parameters:
    mappings - exception patterns (can also be fully qualified class names) as keys, and error view names as values
    See Also:
    RuleBasedTransactionAttribute, RollbackRuleAttribute
  - setDefaultErrorView
```
public void setDefaultErrorView(String defaultErrorView)
```
    Set the name of the default error view. This view will be returned if no specific mapping was found.
    Default is none.
  - setExceptionAttribute
```
public void setExceptionAttribute(String exceptionAttribute)
```
    Set the name of the model attribute as which the exception should be exposed. Default is "exception".
    See Also:
    DEFAULT_EXCEPTION_ATTRIBUTE
  - doResolveException
```
protected ModelAndView doResolveException(PortletRequest request,
                                          MimeResponse response,
                                          Object handler,
                                          Exception ex)
```
    Actually resolve the given exception that got thrown during on handler execution, returning a ModelAndView that represents a specific error page if appropriate.
    Specified by:
    doResolveException in class AbstractHandlerExceptionResolver
    Parameters:
    request - current portlet request
    response - current portlet response
    handler - the executed handler, or null if none chosen at the time of the exception (for example, if multipart resolution failed)
    ex - the exception that got thrown during handler execution
    Returns:
    a corresponding ModelAndView to forward to, or null for default processing
  - determineViewName
```
protected String determineViewName(Exception ex,
                                   PortletRequest request)
```
    Determine the view name for the given exception, searching the "exceptionMappings", using the "defaultErrorView" as fallback.
    Parameters:
    ex - the exception that got thrown during handler execution
    request - current portlet request (useful for obtaining metadata)
    Returns:
    the resolved view name, or null if none found
  - findMatchingViewName
```
protected String findMatchingViewName(Properties exceptionMappings,
                                      Exception ex)
```
    Find a matching view name in the given exception mappings
    Parameters:
    exceptionMappings - mappings between exception class names and error view names
    ex - the exception that got thrown during handler execution
    Returns:
    the view name, or null if none found
    See Also:
    setExceptionMappings(java.util.Properties)
  - getDepth
```
protected int getDepth(String exceptionMapping,
                       Exception ex)
```
    Return the depth to the superclass matching.
    0 means ex matches exactly. Returns -1 if there's no match. Otherwise, returns depth. Lowest depth wins.
    Follows the same algorithm as RollbackRuleAttribute.
  - getModelAndView
```
protected ModelAndView getModelAndView(String viewName,
                                       Exception ex,
                                       PortletRequest request)
```
    Return a ModelAndView for the given request, view name and exception. Default implementation delegates to getModelAndView(viewName, ex).
    Parameters:
    viewName - the name of the error view
    ex - the exception that got thrown during handler execution
    request - current portlet request (useful for obtaining metadata)
    Returns:
    the ModelAndView instance
    See Also:
    getModelAndView(String, Exception)
  - getModelAndView
```
protected ModelAndView getModelAndView(String viewName,
                                       Exception ex)
```
    Return a ModelAndView for the given view name and exception. Default implementation adds the specified exception attribute. Can be overridden in subclasses.
    Parameters:
    viewName - the name of the error view
    ex - the exception that got thrown during handler execution
    Returns:
    the ModelAndView instance
    See Also:
    setExceptionAttribute(java.lang.String)

Class SimpleMappingExceptionResolver

Field Summary

Fields inherited from class org.springframework.web.portlet.handler.AbstractHandlerExceptionResolver

Fields inherited from interface org.springframework.core.Ordered

Constructor Summary

Method Summary

Methods inherited from class org.springframework.web.portlet.handler.AbstractHandlerExceptionResolver

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_EXCEPTION_ATTRIBUTE

Constructor Detail

SimpleMappingExceptionResolver

Method Detail

setExceptionMappings

setDefaultErrorView

setExceptionAttribute

doResolveException

determineViewName

findMatchingViewName

getDepth

getModelAndView

getModelAndView