程序包 cn.taketoday.web.handler.method

类 ExceptionHandlerAnnotationExceptionHandler

java.lang.Object

cn.taketoday.core.OrderedSupport

cn.taketoday.web.handler.AbstractHandlerExceptionHandler

cn.taketoday.web.handler.AbstractActionMappingMethodExceptionHandler

cn.taketoday.web.handler.method.ExceptionHandlerAnnotationExceptionHandler

所有已实现的接口:

cn.taketoday.beans.factory.Aware, cn.taketoday.beans.factory.InitializingBean, cn.taketoday.context.ApplicationContextAware, cn.taketoday.core.Ordered, HandlerExceptionHandler

public class ExceptionHandlerAnnotationExceptionHandler
extends AbstractActionMappingMethodExceptionHandler
implements cn.taketoday.context.ApplicationContextAware, cn.taketoday.beans.factory.InitializingBean

Handle ExceptionHandler annotated method

this method indicates that is a exception handler

从以下版本开始:

2.3.7

作者:

TODAY 2019-06-22 19:17

字段概要

字段

修饰符和类型	字段	说明
private cn.taketoday.context.ApplicationContext	applicationContext
private final LinkedHashMap<ControllerAdviceBean,ExceptionHandlerMethodResolver>	exceptionHandlerAdviceCache
private final ConcurrentHashMap<Class<?>,ExceptionHandlerMethodResolver>	exceptionHandlerCache
private final ConcurrentHashMap<Method,ActionMappingAnnotationHandler>	exceptionHandlerMapping
private AnnotationHandlerFactory	handlerFactory

从类继承的字段 cn.taketoday.web.handler.AbstractHandlerExceptionHandler

logger

从类继承的字段 cn.taketoday.core.OrderedSupport

order

从接口继承的字段 cn.taketoday.web.HandlerExceptionHandler

BEAN_NAME, NONE_RETURN_VALUE

从接口继承的字段 cn.taketoday.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

构造器概要

构造器

构造器	说明
ExceptionHandlerAnnotationExceptionHandler()

方法概要

修饰符和类型	方法	说明
void	afterPropertiesSet()
cn.taketoday.context.ApplicationContext	getApplicationContext()
private ActionMappingAnnotationHandler	getHandler(Supplier<Object> handlerBean, Method method, Class<?> errorHandlerType)
protected Object	handleInternal(RequestContext context, HandlerMethod handlerMethod, Throwable target)	Actually resolve the given exception that got thrown during on handler execution, returning a view(result) that represents a specific error page if appropriate.
protected boolean	hasGlobalExceptionHandlers()	Whether this handler has global exception handlers, e.g. not declared in the same class as the HandlerMethod that raised the exception and therefore can apply to any handler.
private void	initExceptionHandlerAdviceCache(cn.taketoday.context.ApplicationContext applicationContext)
protected ActionMappingAnnotationHandler	lookupExceptionHandler(HandlerMethod handlerMethod, Throwable exception)	Find an @ExceptionHandler method for the given exception.
void	setApplicationContext(cn.taketoday.context.ApplicationContext applicationContext)
void	setHandlerFactory(AnnotationHandlerFactory handlerFactory)
protected boolean	shouldApplyTo(RequestContext request, Object handler)	Checks if the handler is a HandlerMethod and then delegates to the base class implementation of #shouldApplyTo(HttpServletRequest, Object) passing the bean of the HandlerMethod.

从类继承的方法 cn.taketoday.web.handler.AbstractActionMappingMethodExceptionHandler

handleInternal

从类继承的方法 cn.taketoday.web.handler.AbstractHandlerExceptionHandler

addMappedHandlerClass, buildLogMessage, getMappedHandlerClasses, handleException, hasHandlerMappings, logException, logResultedInException, prepareResponse, preventCaching, setMappedHandlerClasses, setMappedHandlers, setPreventResponseCaching, setWarnLogCategory

从类继承的方法 cn.taketoday.core.OrderedSupport

getOrder, setOrder

从类继承的方法 java.lang.Object

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

字段详细资料

exceptionHandlerCache

private final ConcurrentHashMap<Class<?>,ExceptionHandlerMethodResolver> exceptionHandlerCache

exceptionHandlerAdviceCache

private final LinkedHashMap<ControllerAdviceBean,ExceptionHandlerMethodResolver> exceptionHandlerAdviceCache

exceptionHandlerMapping

private final ConcurrentHashMap<Method,ActionMappingAnnotationHandler> exceptionHandlerMapping

applicationContext

@Nullable
private cn.taketoday.context.ApplicationContext applicationContext

handlerFactory

private AnnotationHandlerFactory handlerFactory

构造器详细资料

ExceptionHandlerAnnotationExceptionHandler

public ExceptionHandlerAnnotationExceptionHandler()

方法详细资料

handleInternal

@Nullable
protected Object handleInternal(RequestContext context,
 @Nullable
 HandlerMethod handlerMethod,
 Throwable target)

从类复制的说明: AbstractActionMappingMethodExceptionHandler

Actually resolve the given exception that got thrown during on handler execution, returning a view(result) 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.

指定者:

handleInternal 在类中 AbstractActionMappingMethodExceptionHandler

参数:

context - current HTTP request

handlerMethod - the executed handler method, or null if none chosen at the time of the exception (for example, if multipart resolution failed)

target - the exception that got thrown during handler execution

返回:

a corresponding ModelAndView to forward to, or null for default processing

lookupExceptionHandler

@Nullable
protected ActionMappingAnnotationHandler lookupExceptionHandler(@Nullable
 HandlerMethod handlerMethod,
 Throwable exception)

Find an @ExceptionHandler method for the given exception. The default implementation searches methods in the class hierarchy of the controller first and if not found, it continues searching for additional @ExceptionHandler methods assuming some @ControllerAdvice Framework-managed beans were detected.

参数:

exception - the raised exception

返回:

a method to handle the exception, or null if none

getHandler

private ActionMappingAnnotationHandler getHandler(Supplier<Object> handlerBean,
 Method method,
 Class<?> errorHandlerType)

hasGlobalExceptionHandlers

protected boolean hasGlobalExceptionHandlers()

从类复制的说明: AbstractActionMappingMethodExceptionHandler

Whether this handler has global exception handlers, e.g. not declared in the same class as the HandlerMethod that raised the exception and therefore can apply to any handler.

覆盖:

hasGlobalExceptionHandlers 在类中 AbstractActionMappingMethodExceptionHandler

shouldApplyTo

protected boolean shouldApplyTo(RequestContext request,
 @Nullable
 Object handler)

从类复制的说明: AbstractActionMappingMethodExceptionHandler

Checks if the handler is a HandlerMethod and then delegates to the base class implementation of #shouldApplyTo(HttpServletRequest, Object) passing the bean of the HandlerMethod. Otherwise returns false.

覆盖:

shouldApplyTo 在类中 AbstractActionMappingMethodExceptionHandler

参数:

request - current HTTP request context

handler - the executed handler, or null if none chosen at the time of the exception (for example, if multipart resolution failed)

返回:

whether this resolved should proceed with resolving the exception for the given request and handler

另请参阅:

• AbstractHandlerExceptionHandler.setMappedHandlers(java.util.Set<?>)
• AbstractHandlerExceptionHandler.setMappedHandlerClasses(java.lang.Class<?>...)

setApplicationContext

public void setApplicationContext(@Nullable
 cn.taketoday.context.ApplicationContext applicationContext)

指定者:

setApplicationContext 在接口中 cn.taketoday.context.ApplicationContextAware

getApplicationContext

@Nullable
public cn.taketoday.context.ApplicationContext getApplicationContext()

setHandlerFactory

public void setHandlerFactory(AnnotationHandlerFactory handlerFactory)

afterPropertiesSet

public void afterPropertiesSet()

指定者:

afterPropertiesSet 在接口中 cn.taketoday.beans.factory.InitializingBean

initExceptionHandlerAdviceCache

private void initExceptionHandlerAdviceCache(cn.taketoday.context.ApplicationContext applicationContext)