Versions Compared

Old Version 4

changes.mady.by.user tm_jee

Saved on

compared with

New Version 5

changes.mady.by.user Ted Husted

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Comment:

Update formatting and nomenclature

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

Code Block
titleAccess session via a context entry
Map session = (Map) ActionContext.getContext().get("session");
session.put("myId",myProp);

The following gives you the same thing as above:

code
Code Block
titleAccess session via a helper method (avoids cast)
ServletActionContext.getRequest().getSession()

...

 Warning
Do not use ActionContext.getContext() in the constructor of your 
...
Action class. The values may not be set up
...
, and the call may return null for getSession
...
(
...
)
...
).
...
If you really need to must have get access to the HttpSession, use the ServletConfigInterceptor (see Interceptors).
In your views, you can access with your jsps as suchJavaServer Pages with calls to the implicit properties session and request.
 Code Block
titleAccessing the Session or Request from a JSP

<saf
 Code Block

<ww: property value="#session.myId" />

<ww<saf: property value="#request.myId" />

All the servlet scopes can be accessed like abovevia the ActionContext.
 Code Block
titleAccessing servlet scopes
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("session");
session.put("myId", myProp);

Map attr = (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 dosendoean't exist, it will search request}, {{session, and application maps respectively.