Package org.springframework.web.servlet
Class ViewRendererServlet
- java.lang.Object
- javax.servlet.GenericServlet
- javax.servlet.http.HttpServlet
- org.springframework.web.servlet.ViewRendererServlet
- All Implemented Interfaces:
Serializable,Servlet,ServletConfig
public class ViewRendererServlet extends HttpServlet
ViewRendererServlet is a bridge servlet, mainly for the Portlet MVC support.For usage with Portlets, this Servlet is necessary to force the portlet container to convert the PortletRequest to a ServletRequest, which it has to do when including a resource via the PortletRequestDispatcher. This allows for reuse of the entire Servlet-based View support even in a Portlet environment.
The actual mapping of the bridge servlet is configurable in the DispatcherPortlet, via a "viewRendererUrl" property. The default is "/WEB-INF/servlet/view", which is just available for internal resource dispatching.
- Since:
- 2.0
- Author:
- William G. Thompson, Jr., John A. Lewis, Juergen Hoeller
- See Also:
- Serialized Form
Field Summary
Fields Modifier and Type Field Description static StringMODEL_ATTRIBUTEName of request attribute that holds the model Mapstatic StringVIEW_ATTRIBUTEName of request attribute that holds the View objectstatic StringWEB_APPLICATION_CONTEXT_ATTRIBUTERequest attribute to hold current web application context.
Constructor Summary
Constructors Constructor Description ViewRendererServlet()
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected voiddoGet(HttpServletRequest request, HttpServletResponse response)protected voiddoPost(HttpServletRequest request, HttpServletResponse response)protected voidprocessRequest(HttpServletRequest request, HttpServletResponse response)Process this request, handling exceptions.protected voidrenderView(HttpServletRequest request, HttpServletResponse response)Retrieve the View instance and model Map to render and trigger actual rendering.Methods inherited from class javax.servlet.http.HttpServlet
doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service
Methods inherited from class javax.servlet.GenericServlet
destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log
Field Detail
WEB_APPLICATION_CONTEXT_ATTRIBUTE
public static final String WEB_APPLICATION_CONTEXT_ATTRIBUTE
Request attribute to hold current web application context. Otherwise only the global web app context is obtainable by tags etc.
VIEW_ATTRIBUTE
public static final String VIEW_ATTRIBUTE
Name of request attribute that holds the View object
MODEL_ATTRIBUTE
public static final String MODEL_ATTRIBUTE
Name of request attribute that holds the model Map
Constructor Detail
ViewRendererServlet
public ViewRendererServlet()
Method Detail
doGet
protected final void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
- Overrides:
doGetin classHttpServlet- Throws:
ServletExceptionIOException
doPost
protected final void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
- Overrides:
doPostin classHttpServlet- Throws:
ServletExceptionIOException
processRequest
protected final void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
Process this request, handling exceptions. The actually event handling is performed by the abstractrenderView()template method.
renderView
protected void renderView(HttpServletRequest request, HttpServletResponse response) throws Exception
Retrieve the View instance and model Map to render and trigger actual rendering.- Parameters:
request- current HTTP requestresponse- current HTTP response- Throws:
Exception- in case of any kind of processing failure- See Also:
View.render(java.util.Map<java.lang.String, ?>, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)