org.springframework.web.servlet.mvc
Class ServletForwardingController
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.ServletForwardingController
- All Implemented Interfaces:
- org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware, org.springframework.context.ApplicationContextAware, org.springframework.web.context.ServletContextAware, Controller
public class ServletForwardingController
- extends AbstractController
- implements org.springframework.beans.factory.BeanNameAware
Spring Controller implementation that forwards to a named servlet,
i.e. the "servlet-name" in web.xml rather than a URL path mapping.
A target servlet doesn't even need a "servlet-mapping" in web.xml
in the first place: A "servlet" declaration is sufficient.
Useful to invoke an existing servlet via Spring's dispatching infrastructure,
for example to apply Spring HandlerInterceptors to its requests. This will work
even in a minimal Servlet container that does not support Servlet filters.
Example: web.xml, mapping all "/myservlet" requests to a Spring dispatcher.
Also defines a custom "myServlet", but without servlet mapping.
<servlet>
<servlet-name>myServlet</servlet-name>
<servlet-class>mypackage.TestServlet</servlet-class>
</servlet>
<servlet>
<servlet-name>myDispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>myDispatcher</servlet-name>
<url-pattern>/myservlet</url-pattern>
</servlet-mapping>
Example: myDispatcher-servlet.xml, in turn forwarding "/myservlet" to your
servlet (identified by servlet name). All such requests will go through the
configured HandlerInterceptor chain (e.g. an OpenSessionInViewInterceptor).
From the servlet point of view, everything will work as usual.
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="interceptors">
<list>
<ref bean="openSessionInViewInterceptor"/>
</list>
</property>
<property name="mappings">
<props>
<prop key="/myservlet">myServletForwardingController</prop>
</props>
</property>
</bean>
<bean id="myServletForwardingController" class="org.springframework.web.servlet.mvc.ServletForwardingController">
<property name="servletName"><value>myServlet</value></property>
</bean>
- Since:
- 1.1.1
- Author:
- Juergen Hoeller
- See Also:
ServletWrappingController
,
org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor
,
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
,
org.springframework.orm.jdo.support.OpenPersistenceManagerInViewInterceptor
,
org.springframework.orm.jdo.support.OpenPersistenceManagerInViewFilter
Fields inherited from class org.springframework.context.support.ApplicationObjectSupport |
logger |
Method Summary |
protected ModelAndView |
handleRequestInternal(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response)
Template method. |
void |
setBeanName(java.lang.String name)
|
void |
setServletName(java.lang.String servletName)
Set the name of the servlet to forward to,
i.e. |
protected boolean |
useInclude(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response)
Determine whether to use RequestDispatcher's include or
forward method. |
Methods inherited from class org.springframework.web.servlet.support.WebContentGenerator |
applyCacheSeconds, applyCacheSeconds, cacheForSeconds, cacheForSeconds, checkAndPrepare, checkAndPrepare, getCacheSeconds, getSupportedMethods, isRequireSession, isUseCacheControlHeader, isUseCacheControlNoStore, isUseExpiresHeader, preventCaching, setCacheSeconds, setRequireSession, setSupportedMethods, setUseCacheControlHeader, setUseCacheControlNoStore, setUseExpiresHeader |
Methods inherited from class org.springframework.web.context.support.WebApplicationObjectSupport |
getServletContext, getTempDir, getWebApplicationContext, initApplicationContext, initServletContext, isContextRequired, setServletContext |
Methods inherited from class org.springframework.context.support.ApplicationObjectSupport |
getApplicationContext, getMessageSourceAccessor, initApplicationContext, requiredContextClass, setApplicationContext |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ServletForwardingController
public ServletForwardingController()
setServletName
public void setServletName(java.lang.String servletName)
- Set the name of the servlet to forward to,
i.e. the "servlet-name" of the target servlet in web.xml.
Default is the bean name of this controller.
setBeanName
public void setBeanName(java.lang.String name)
- Specified by:
setBeanName
in interface org.springframework.beans.factory.BeanNameAware
handleRequestInternal
protected ModelAndView handleRequestInternal(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response)
throws java.lang.Exception
- Description copied from class:
AbstractController
- Template method. Subclasses must implement this.
The contract is the same as for
handleRequest
.
- Specified by:
handleRequestInternal
in class AbstractController
- Throws:
java.lang.Exception
- See Also:
AbstractController.handleRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
useInclude
protected boolean useInclude(javax.servlet.http.HttpServletRequest request,
javax.servlet.http.HttpServletResponse response)
- Determine whether to use RequestDispatcher's
include
or
forward
method.
Performs a check whether an include URI attribute is found in the request,
indicating an include request, and whether the response has already been committed.
In both cases, an include will be performed, as a forward is not possible anymore.
- Parameters:
request
- current HTTP requestresponse
- current HTTP response
- Returns:
true
for include, false
for forward- See Also:
RequestDispatcher.forward(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
,
RequestDispatcher.include(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
,
ServletResponse.isCommitted()
,
WebUtils.isIncludeRequest(javax.servlet.ServletRequest)