webwork doc:Accessing application, session, request objects

This page last changed on Nov 30, 2004 by jcarreira.

Webwork provides several access helpers to access Session, Application, Request scopes.
Web agnostic (independent of the servlet API) with calls:

Map session = (Map) ActionContext.getContext().get("session");
session.put("myId",myProp);

 

The following gives you the same thing as above:

ServletActionContext.getRequest().getSession()

Note: Be sure not to use ActionContext.getContext() in the constructor of your action since the values may not be set up already (returning null for getSession()).
Note also: ActionContext.getContext().get("session") is the same as
ActionContext.getContext().getSession() with a cast to Map.

If you really need to get access to the HttpSession, use the ServletConfigInterceptor (see Interceptors).

In your views, you can access with your jsps as such

"#session.myId" />

"#request.myId" />

 

All the servlet scopes can be accessed like above.

Map request = (Map) ActionContext.getContext().get("request");
request.put("myId",myProp);
Map application = (Map) ActionContext.getContext().get("application");
application.put("myId",myProp);
Map session = (Map) ActionContext.getContext().get("attr");
attr.put("myId",myProp);

The 'attr' map will search the javax.servlet.jsp.PageContext for the specified key. If the PageContext dosen't exist, it will search request,session,application maps respectively.

 Application, Session, Request objects in jsp

This page last changed on Nov 30, 2004 by jcarreira.

The application, session and request objects are available from within ww tags in jsp wherever ognl can be evaluated. Use the #session syntax to get the object and access values by their keys using ['key'].

<ww:property class="java-quote" value="&amp;lt;span">"#application['foo']"/>

<ww:property class="java-quote" value="&amp;lt;span">"#session['baz']"/></ww:property></ww:property>

Conversely, if you would like to make webwork objects availible to say the jsp/jstl request scope. The property tag can be used like this.

 

<ww:set class="java-quote" name="&amp;lt;span">"jobz" value="jobs" scope="request" /></ww:set>

A full example below shows a webwork variable "jobs" being exposed as "jobz" and being used with jstl and the display tag.

WW:Exposing webwork objects to JSTL, with a JSTL and DisplayTag Example