java.lang.Object
- org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver
- - org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver

All Implemented Interfaces:: Ordered, HandlerExceptionResolver

public class DefaultHandlerExceptionResolver
extends AbstractHandlerExceptionResolver

The default implementation of the HandlerExceptionResolver interface, resolving standard Spring MVC exceptions and translating them to corresponding HTTP status codes.

This exception resolver is enabled by default in the common Spring DispatcherServlet.

Supported Exceptions
Exception	HTTP Status Code
HttpRequestMethodNotSupportedException	405 (SC_METHOD_NOT_ALLOWED)
HttpMediaTypeNotSupportedException	415 (SC_UNSUPPORTED_MEDIA_TYPE)
HttpMediaTypeNotAcceptableException	406 (SC_NOT_ACCEPTABLE)
MissingPathVariableException	500 (SC_INTERNAL_SERVER_ERROR)
MissingServletRequestParameterException	400 (SC_BAD_REQUEST)
ServletRequestBindingException	400 (SC_BAD_REQUEST)
ConversionNotSupportedException	500 (SC_INTERNAL_SERVER_ERROR)
TypeMismatchException	400 (SC_BAD_REQUEST)
HttpMessageNotReadableException	400 (SC_BAD_REQUEST)
HttpMessageNotWritableException	500 (SC_INTERNAL_SERVER_ERROR)
MethodArgumentNotValidException	400 (SC_BAD_REQUEST)
MissingServletRequestPartException	400 (SC_BAD_REQUEST)
BindException	400 (SC_BAD_REQUEST)
NoHandlerFoundException	404 (SC_NOT_FOUND)
AsyncRequestTimeoutException	503 (SC_SERVICE_UNAVAILABLE)

Since:: 3.0
Author:: Arjen Poutsma, Rossen Stoyanchev, Juergen Hoeller
See Also:: ResponseEntityExceptionHandler

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`PAGE_NOT_FOUND_LOG_CATEGORY`	Log category to use when no mapped handler is found for a request.
`protected static Log`	`pageNotFoundLogger`	Additional logger to use when no mapped handler is found for a request.

Fields inherited from class org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver
logger

Fields inherited from interface org.springframework.core.Ordered
HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary
Constructors
Constructor Description
DefaultHandlerExceptionResolver()
Sets the order to Ordered.LOWEST_PRECEDENCE.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected ModelAndView`	`doResolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)`	Actually resolve the given exception that got thrown during handler execution, returning a `ModelAndView` that represents a specific error page if appropriate.
`protected ModelAndView`	`handleAsyncRequestTimeoutException(AsyncRequestTimeoutException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where an async request timed out.
`protected ModelAndView`	`handleBindException(BindException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where an @ModelAttribute method argument has binding or validation errors and is not followed by another method argument of type `BindingResult`.
`protected ModelAndView`	`handleConversionNotSupported(ConversionNotSupportedException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case when a `WebDataBinder` conversion cannot occur.
`protected ModelAndView`	`handleHttpMediaTypeNotAcceptable(HttpMediaTypeNotAcceptableException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where no message converters were found that were acceptable for the client (expressed via the `Accept` header.
`protected ModelAndView`	`handleHttpMediaTypeNotSupported(HttpMediaTypeNotSupportedException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where no message converters were found for the PUT or POSTed content.
`protected ModelAndView`	`handleHttpMessageNotReadable(HttpMessageNotReadableException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where a message converter cannot read from an HTTP request.
`protected ModelAndView`	`handleHttpMessageNotWritable(HttpMessageNotWritableException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where a message converter cannot write to an HTTP request.
`protected ModelAndView`	`handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where no request handler method was found for the particular HTTP request method.
`protected ModelAndView`	`handleMethodArgumentNotValidException(MethodArgumentNotValidException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where an argument annotated with `@Valid` such as an `RequestBody` or `RequestPart` argument fails validation.
`protected ModelAndView`	`handleMissingPathVariable(MissingPathVariableException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case when a declared path variable does not match any extracted URI variable.
`protected ModelAndView`	`handleMissingServletRequestParameter(MissingServletRequestParameterException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case when a required parameter is missing.
`protected ModelAndView`	`handleMissingServletRequestPartException(MissingServletRequestPartException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where an @RequestPart, a `MultipartFile`, or a `javax.servlet.http.Part` argument is required but is missing.
`protected ModelAndView`	`handleNoHandlerFoundException(NoHandlerFoundException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case where no handler was found during the dispatch.
`protected ModelAndView`	`handleServletRequestBindingException(ServletRequestBindingException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case when an unrecoverable binding exception occurs - e.g.
`protected ModelAndView`	`handleTypeMismatch(TypeMismatchException ex, HttpServletRequest request, HttpServletResponse response, Object handler)`	Handle the case when a `WebDataBinder` conversion error occurs.
`protected void`	`sendServerError(Exception ex, HttpServletRequest request, HttpServletResponse response)`	Invoked to send a server error.

Methods inherited from class org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver
buildLogMessage, getOrder, logException, prepareResponse, preventCaching, resolveException, setMappedHandlerClasses, setMappedHandlers, setOrder, setPreventResponseCaching, setWarnLogCategory, shouldApplyTo

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

Field Detail
- PAGE_NOT_FOUND_LOG_CATEGORY
```
public static final String PAGE_NOT_FOUND_LOG_CATEGORY
```
  Log category to use when no mapped handler is found for a request.
  See Also:
  pageNotFoundLogger, Constant Field Values
- pageNotFoundLogger
```
protected static final Log pageNotFoundLogger
```
  Additional logger to use when no mapped handler is found for a request.
  See Also:
  PAGE_NOT_FOUND_LOG_CATEGORY

Constructor Detail
- DefaultHandlerExceptionResolver
```
public DefaultHandlerExceptionResolver()
```
  Sets the order to Ordered.LOWEST_PRECEDENCE.

Method Detail

doResolveException
```
@Nullable
protected ModelAndView doResolveException(HttpServletRequest request,
                                          HttpServletResponse response,
                                          @Nullable
                                          Object handler,
                                          Exception ex)
```
Description copied from class: AbstractHandlerExceptionResolver
Actually resolve the given exception that got thrown during handler execution, returning a ModelAndView that represents a specific error page if appropriate.
May be overridden in subclasses, in order to apply specific exception checks. Note that this template method will be invoked after checking whether this resolved applies ("mappedHandlers" etc), so an implementation may simply proceed with its actual exception handling.
Specified by:
doResolveException in class AbstractHandlerExceptionResolver
Parameters:
request - current HTTP request
response - current HTTP 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 in the resolution chain

handleHttpRequestMethodNotSupported
```
protected ModelAndView handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException ex,
                                                           HttpServletRequest request,
                                                           HttpServletResponse response,
                                                           @Nullable
                                                           Object handler)
                                                    throws IOException
```
Handle the case where no request handler method was found for the particular HTTP request method.
The default implementation logs a warning, sends an HTTP 405 error, sets the "Allow" header, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the HttpRequestMethodNotSupportedException could be rethrown as-is.
Parameters:
ex - the HttpRequestMethodNotSupportedException to be handled
request - current HTTP request
response - current HTTP response
handler - the executed handler, or null if none chosen at the time of the exception (for example, if multipart resolution failed)
Returns:
an empty ModelAndView indicating the exception was handled
Throws:
IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleHttpMediaTypeNotSupported

protected ModelAndView handleHttpMediaTypeNotSupported(HttpMediaTypeNotSupportedException ex,
                                                       HttpServletRequest request,
                                                       HttpServletResponse response,
                                                       @Nullable
                                                       Object handler)
                                                throws IOException

Handle the case where no message converters were found for the PUT or POSTed content.

The default implementation sends an HTTP 415 error, sets the "Accept" header, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the HttpMediaTypeNotSupportedException could be rethrown as-is.

Parameters:: ex - the HttpMediaTypeNotSupportedException to be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleHttpMediaTypeNotAcceptable

protected ModelAndView handleHttpMediaTypeNotAcceptable(HttpMediaTypeNotAcceptableException ex,
                                                        HttpServletRequest request,
                                                        HttpServletResponse response,
                                                        @Nullable
                                                        Object handler)
                                                 throws IOException

Handle the case where no message converters were found that were acceptable for the client (expressed via the Accept header.

The default implementation sends an HTTP 406 error and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the HttpMediaTypeNotAcceptableException could be rethrown as-is.

Parameters:: ex - the HttpMediaTypeNotAcceptableException to be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleMissingPathVariable

protected ModelAndView handleMissingPathVariable(MissingPathVariableException ex,
                                                 HttpServletRequest request,
                                                 HttpServletResponse response,
                                                 @Nullable
                                                 Object handler)
                                          throws IOException

Handle the case when a declared path variable does not match any extracted URI variable.

The default implementation sends an HTTP 500 error, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the MissingPathVariableException could be rethrown as-is.

Parameters:: ex - the MissingPathVariableException to be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)
Since:: 4.2

handleMissingServletRequestParameter

protected ModelAndView handleMissingServletRequestParameter(MissingServletRequestParameterException ex,
                                                            HttpServletRequest request,
                                                            HttpServletResponse response,
                                                            @Nullable
                                                            Object handler)
                                                     throws IOException

Handle the case when a required parameter is missing.

The default implementation sends an HTTP 400 error, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the MissingServletRequestParameterException could be rethrown as-is.

Parameters:: ex - the MissingServletRequestParameterException to be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleServletRequestBindingException

protected ModelAndView handleServletRequestBindingException(ServletRequestBindingException ex,
                                                            HttpServletRequest request,
                                                            HttpServletResponse response,
                                                            @Nullable
                                                            Object handler)
                                                     throws IOException

Handle the case when an unrecoverable binding exception occurs - e.g. required header, required cookie.

The default implementation sends an HTTP 400 error, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the exception could be rethrown as-is.

Parameters:: ex - the exception to be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleConversionNotSupported

protected ModelAndView handleConversionNotSupported(ConversionNotSupportedException ex,
                                                    HttpServletRequest request,
                                                    HttpServletResponse response,
                                                    @Nullable
                                                    Object handler)
                                             throws IOException

Handle the case when a WebDataBinder conversion cannot occur.

The default implementation sends an HTTP 500 error, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the ConversionNotSupportedException could be rethrown as-is.

Parameters:: ex - the ConversionNotSupportedException to be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleTypeMismatch
```
protected ModelAndView handleTypeMismatch(TypeMismatchException ex,
                                          HttpServletRequest request,
                                          HttpServletResponse response,
                                          @Nullable
                                          Object handler)
                                   throws IOException
```
Handle the case when a WebDataBinder conversion error occurs.
The default implementation sends an HTTP 400 error, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the TypeMismatchException could be rethrown as-is.
Parameters:
ex - the TypeMismatchException to be handled
request - current HTTP request
response - current HTTP response
handler - the executed handler
Returns:
an empty ModelAndView indicating the exception was handled
Throws:
IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleHttpMessageNotReadable

protected ModelAndView handleHttpMessageNotReadable(HttpMessageNotReadableException ex,
                                                    HttpServletRequest request,
                                                    HttpServletResponse response,
                                                    @Nullable
                                                    Object handler)
                                             throws IOException

Handle the case where a message converter cannot read from an HTTP request.

The default implementation sends an HTTP 400 error, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the HttpMessageNotReadableException could be rethrown as-is.

Parameters:: ex - the HttpMessageNotReadableException to be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleHttpMessageNotWritable

protected ModelAndView handleHttpMessageNotWritable(HttpMessageNotWritableException ex,
                                                    HttpServletRequest request,
                                                    HttpServletResponse response,
                                                    @Nullable
                                                    Object handler)
                                             throws IOException

Handle the case where a message converter cannot write to an HTTP request.

The default implementation sends an HTTP 500 error, and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the HttpMessageNotWritableException could be rethrown as-is.

Parameters:: ex - the HttpMessageNotWritableException to be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleMethodArgumentNotValidException

protected ModelAndView handleMethodArgumentNotValidException(MethodArgumentNotValidException ex,
                                                             HttpServletRequest request,
                                                             HttpServletResponse response,
                                                             @Nullable
                                                             Object handler)
                                                      throws IOException

Handle the case where an argument annotated with @Valid such as an RequestBody or RequestPart argument fails validation.

By default, an HTTP 400 error is sent back to the client.

Parameters:: request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleMissingServletRequestPartException

protected ModelAndView handleMissingServletRequestPartException(MissingServletRequestPartException ex,
                                                                HttpServletRequest request,
                                                                HttpServletResponse response,
                                                                @Nullable
                                                                Object handler)
                                                         throws IOException

Handle the case where an @RequestPart, a MultipartFile, or a javax.servlet.http.Part argument is required but is missing.

By default, an HTTP 400 error is sent back to the client.

Parameters:: request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleBindException

protected ModelAndView handleBindException(BindException ex,
                                           HttpServletRequest request,
                                           HttpServletResponse response,
                                           @Nullable
                                           Object handler)
                                    throws IOException

Handle the case where an @ModelAttribute method argument has binding or validation errors and is not followed by another method argument of type BindingResult.

By default, an HTTP 400 error is sent back to the client.

Parameters:: request - current HTTP request; response - current HTTP response; handler - the executed handler
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)

handleNoHandlerFoundException
```
protected ModelAndView handleNoHandlerFoundException(NoHandlerFoundException ex,
                                                     HttpServletRequest request,
                                                     HttpServletResponse response,
                                                     @Nullable
                                                     Object handler)
                                              throws IOException
```
Handle the case where no handler was found during the dispatch.
The default implementation sends an HTTP 404 error and returns an empty ModelAndView. Alternatively, a fallback view could be chosen, or the NoHandlerFoundException could be rethrown as-is.
Parameters:
ex - the NoHandlerFoundException to be handled
request - current HTTP request
response - current HTTP response
handler - the executed handler, or null if none chosen at the time of the exception (for example, if multipart resolution failed)
Returns:
an empty ModelAndView indicating the exception was handled
Throws:
IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)
Since:
4.0

handleAsyncRequestTimeoutException

protected ModelAndView handleAsyncRequestTimeoutException(AsyncRequestTimeoutException ex,
                                                          HttpServletRequest request,
                                                          HttpServletResponse response,
                                                          @Nullable
                                                          Object handler)
                                                   throws IOException

Handle the case where an async request timed out.

The default implementation sends an HTTP 503 error.

Parameters:: ex - the AsyncRequestTimeoutExceptionto be handled; request - current HTTP request; response - current HTTP response; handler - the executed handler, or null if none chosen at the time of the exception (for example, if multipart resolution failed)
Returns:: an empty ModelAndView indicating the exception was handled
Throws:: IOException - potentially thrown from HttpServletResponse.sendError(int, java.lang.String)
Since:: 4.2.8

sendServerError

protected void sendServerError(Exception ex,
                               HttpServletRequest request,
                               HttpServletResponse response)
                        throws IOException

Invoked to send a server error. Sets the status to 500 and also sets the request attribute "javax.servlet.error.exception" to the Exception.

Throws:: IOException

Class DefaultHandlerExceptionResolver

Field Summary

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

Fields inherited from interface org.springframework.core.Ordered

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Detail

PAGE_NOT_FOUND_LOG_CATEGORY

pageNotFoundLogger

Constructor Detail

DefaultHandlerExceptionResolver

Method Detail

doResolveException

handleHttpRequestMethodNotSupported

handleHttpMediaTypeNotSupported

handleHttpMediaTypeNotAcceptable

handleMissingPathVariable

handleMissingServletRequestParameter

handleServletRequestBindingException

handleConversionNotSupported

handleTypeMismatch

handleHttpMessageNotReadable

handleHttpMessageNotWritable

handleMethodArgumentNotValidException

handleMissingServletRequestPartException

handleBindException

handleNoHandlerFoundException

handleAsyncRequestTimeoutException

sendServerError