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体验新版 GitCode,发现更多精彩内容 >>
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06777c81
编写于
6月 16, 2009
作者:
A
Arjen Poutsma
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差异文件
Moved REST @ExceptionResolver to MVC chapter.
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b5708590
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2
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2 changed file
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43 addition
and
40 deletion
+43
-40
spring-framework-reference/src/mvc.xml
spring-framework-reference/src/mvc.xml
+43
-0
spring-framework-reference/src/rest.xml
spring-framework-reference/src/rest.xml
+0
-40
未找到文件。
spring-framework-reference/src/mvc.xml
浏览文件 @
06777c81
...
...
@@ -2809,6 +2809,49 @@ public class FileUploadBean {
exception mapping feature from the Servlet API, but it's also possible to
implement more finely grained mappings of exceptions from different
handlers.
</para>
<section
id=
"mvc-ann-exceptionhandler"
>
<title><interfacename>
@ExceptionResolver
</interfacename></title>
<para>
As an alternative to implementing the
<interfacename>
HandlerExceptionResolver
</interfacename>
, you
can use the
<interfacename>
@ExceptionHandler
</interfacename>
. The
<classname>
@ExceptionHandler
</classname>
method annotation is
used within a controller to specify which method will be invoked when an
exception of a specific type is thrown during the execution of
controller methods. For example
</para>
<programlisting
language=
"java"
>
@Controller
public class SimpleController {
// other controller method omitted
@ExceptionHandler(IOException.class)
public String handleIOException(IOException ex, HttpServletRequest request) {
return ClassUtils.getShortName(ex.getClass());
}
}
</programlisting>
<para>
will invoke the 'handlerIOException' method when a
<classname>
java.io.IOException
</classname>
is thrown.
</para>
<para>
The
<classname>
@ExceptionHandler
</classname>
value can be set to
an array of Exception types. If an exception is thrown matches one of
the types in the list, then the method annotated with the matching
<classname>
@ExceptionHandler
</classname>
will be invoked. If the
annotation value is not set then the exception types listed as method
arguments are used.
</para>
<para>
Much like standard controller methods annotated with a
<classname>
@RequestMapping
</classname>
annotation, the method arguments
and return values of
<classname>
@ExceptionHandler
</classname>
methods
are very flexible. For example, the
<classname>
HttpServletRequest
</classname>
can be accessed in Servlet
environments and the
<classname>
PortletRequest
</classname>
in Portlet
environments. The return type can be a
<classname>
String
</classname>
,
which is interpreted as a view name or a
<classname>
ModelAndView
</classname>
object. Please refer to the API
documentation for more details.
</para>
</section>
</section>
<section
id=
"mvc-coc"
>
...
...
spring-framework-reference/src/rest.xml
浏览文件 @
06777c81
...
...
@@ -122,45 +122,5 @@ public String deletePet(@PathVariable int ownerId, @PathVariable int petId) {
or an AspectJ aspect.
</para>
</section>
<section
id=
"rest-exception"
>
<title>
Exception Handling
</title>
<para>
The
<classname>
@ExceptionHandler
</classname>
method annotation is
used within a controller to specify which method will be invoked when an
exception of a specific type is thrown during the execution of
controller methods. For example
</para>
<programlisting
language=
"java"
>
@Controller
public class SimpleController {
// other controller method omitted
@ExceptionHandler(IOException.class)
public String handleIOException(IOException ex, HttpServletRequest request) {
return ClassUtils.getShortName(ex.getClass());
}
}
</programlisting>
<para>
will invoke the 'handlerIOException' method when a
<classname>
java.io.IOException
</classname>
is thrown.
</para>
<para>
The
<classname>
@ExceptionHandler
</classname>
value can be set to
an array of Exception types. If an exception is thrown matches one of
the types in the list, then the method annotated with the matching
<classname>
@ExceptionHandler
</classname>
will be invoked. If the
annotation value is not set then the exception types listed as method
arguments are used.
</para>
<para>
Much like standard controller methods annotated with a
<classname>
@RequestMapping
</classname>
annotation, the method arguments
and return values of
<classname>
@ExceptionHandler
</classname>
methods
are very flexible. For example, the
<classname>
HttpServletRequest
</classname>
can be accessed in Servlet
environments and the
<classname>
PortletRequest
</classname>
in Portlet
environments. The return type can be a
<classname>
String
</classname>
,
which is interpreted as a view name or a
<classname>
ModelAndView
</classname>
object. Please refer to the API
documentation for more details.
</para>
</section>
</chapter>
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