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java.lang.Objectorg.springframework.web.servlet.handler.SimpleServletHandlerAdapter
public class SimpleServletHandlerAdapter
Adapter to use the Servlet interface with the generic DispatcherServlet.
Calls the Servlet's service method to handle a request.
Last-modified checking is not explicitly supported: This is typically handled by the Servlet implementation itself (usually deriving from the HttpServlet base class).
This adapter is not activated by default; it needs to be defined as a bean in the DispatcherServlet context. It will automatically apply to mapped handler beans that implement the Servlet interface then.
Note that Servlet instances defined as bean will not receive initialization and destruction callbacks, unless a special post-processor such as SimpleServletPostProcessor is defined in the DispatcherServlet context.
Alternatively, consider wrapping a Servlet with Spring's ServletWrappingController. This is particularly appropriate for existing Servlet classes, allowing to specify Servlet initialization parameters etc.
Servlet,
HttpServlet,
SimpleServletPostProcessor,
ServletWrappingController| Constructor Summary | |
|---|---|
SimpleServletHandlerAdapter()
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| Method Summary | |
|---|---|
long |
getLastModified(HttpServletRequest request,
Object handler)
Same contract as for HttpServlet's getLastModified method. |
ModelAndView |
handle(HttpServletRequest request,
HttpServletResponse response,
Object handler)
Use the given handler to handle this request. |
boolean |
supports(Object handler)
Given a handler instance, return whether or not this HandlerAdapter can support it. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public SimpleServletHandlerAdapter()
| Method Detail |
|---|
public boolean supports(Object handler)
HandlerAdapterA typical implementation:
return (handler instanceof MyHandler);
supports in interface HandlerAdapterhandler - handler object to check
public ModelAndView handle(HttpServletRequest request,
HttpServletResponse response,
Object handler)
throws Exception
HandlerAdapter
handle in interface HandlerAdapterrequest - current HTTP requestresponse - current HTTP responsehandler - handler to use. This object must have previously been passed
to the supports method of this interface, which must have
returned true.
null if the request has been handled directly
Exception - in case of errors
public long getLastModified(HttpServletRequest request,
Object handler)
HandlerAdaptergetLastModified method.
Can simply return -1 if there's no support in the handler class.
getLastModified in interface HandlerAdapterrequest - current HTTP requesthandler - handler to use
HttpServlet.getLastModified(javax.servlet.http.HttpServletRequest),
LastModified.getLastModified(javax.servlet.http.HttpServletRequest)
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