org.springframework.web.servlet.mvc
Class ParameterizableViewController

java.lang.Object
  org.springframework.context.support.ApplicationObjectSupport
      org.springframework.web.context.support.WebApplicationObjectSupport
          org.springframework.web.servlet.support.WebContentGenerator
              org.springframework.web.servlet.mvc.AbstractController
                  org.springframework.web.servlet.mvc.ParameterizableViewController

All Implemented Interfaces:

ApplicationContextAware, Controller

public class ParameterizableViewController

extends AbstractController

Trivial controller that always returns a named view. The view can be configured using an exposed configuration property. This controller offers an alternative to sending a request straight to a view such as a JSP. The advantage here is, that you're decoupling the controller and the view, letter the some the configuration determine (instead of the controller) the viewtechnology.

An alternative to the ParameterizableViewController is of the MultiAction controllers, some of which allow the same behavior, but then for more views at in one controller.

Workflow (and that defined by superclass):

1. Request is received by the controller
2. call to handleRequestInternal which just returns the view, named by the configuration property viewName. Nothing more, nothing less

Exposed configuration properties (and those defined by superclass):

name	default	description
viewName	null	the name of the view the viewResolver will use to forward to (if this property is not set, an exception will be thrown during initialization)

Author:

Rod Johnson

Field Summary

Fields inherited from class org.springframework.web.servlet.support.WebContentGenerator

HEADER_CACHE_CONTROL, HEADER_EXPIRES, HEADER_PRAGMA, METHOD_GET, METHOD_POST

Fields inherited from class org.springframework.context.support.ApplicationObjectSupport

logger

Constructor Summary

ParameterizableViewController()

Method Summary

java.lang.String	getViewName() Return the name of the view to delegate to.
protected ModelAndView	handleRequestInternal(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Return a ModelAndView object with the specified view name.
protected void	initApplicationContext() Subclasses can override this for custom initialization behavior.
void	setViewName(java.lang.String viewName) Set the name of the view to delegate to.

Methods inherited from class org.springframework.web.servlet.mvc.AbstractController

handleRequest, setSynchronizeOnSession

Methods inherited from class org.springframework.web.servlet.support.WebContentGenerator

applyCacheSeconds, applyCacheSeconds, cacheForSeconds, cacheForSeconds, checkAndPrepare, checkAndPrepare, preventCaching, setCacheSeconds, setRequireSession, setSupportedMethods, setUseCacheControlHeader, setUseExpiresHeader

Methods inherited from class org.springframework.web.context.support.WebApplicationObjectSupport

getServletContext, getTempDir, getWebApplicationContext

Methods inherited from class org.springframework.context.support.ApplicationObjectSupport

getApplicationContext, getMessageSourceAccessor, requiredContextClass, setApplicationContext

Methods inherited from class java.lang.Object

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

Constructor Detail

ParameterizableViewController

public ParameterizableViewController()

Method Detail

setViewName

public void setViewName(java.lang.String viewName)

Set the name of the view to delegate to.

getViewName

public java.lang.String getViewName()

Return the name of the view to delegate to.

initApplicationContext

protected void initApplicationContext()

Description copied from class: ApplicationObjectSupport

Subclasses can override this for custom initialization behavior. Gets called by setApplicationContext() after setting the context instance.

Note: Does not get called on reinitialization of the context.

Overrides:

initApplicationContext in class ApplicationObjectSupport

handleRequestInternal

protected ModelAndView handleRequestInternal(javax.servlet.http.HttpServletRequest request,
                                             javax.servlet.http.HttpServletResponse response)
                                      throws java.lang.Exception

Return a ModelAndView object with the specified view name.

Specified by:

handleRequestInternal in class AbstractController

Throws:

java.lang.Exception

See Also:

AbstractController.handleRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)