So here I am, writing a JSP script which is called by a Apache Tiles which is called by a Struts2 action. Everything works fine, but I'm just curious about what scopes I have access to.
I (think I) understand that the following blocks are in 开发者_如何学Pythonthe JSP's scope, in that I have access to the various JSP implicit objects:
<% stuff in here (and variations of this type of tag) %> ${ stuff in here }
And I know I can access the Struts2 Action with the various Struts2 Tags, but I only have "bean access":
<%@ taglib uri="/struts-tags" prefix="s" %> <s:property value="beanAccessorHere"/>
And then, I only know one way of accessing the actual Action context (I think), but only in a Struts2 "if" tag:
<s:if test="%{variableInMyAction == null}"> </s:if>
So, I was wondering if
- There was a way to access the Action context like #3, but in a more flexible manner like in #1.
- If I can use the %{} syntax like in #3 but in any place other than in a Struts "if" tag.
Thanks for your time!
So I believe I've figured it out.
There was a way to access the Action context like #3, but in a more flexible manner like in #1.
I can use <s:property value="%{now_in_action_context}"/>
to access variables in my Action, and, in fact, can use the %{}
syntax in many different Struts tags.
If I can use the %{} syntax like in #3 but in any place other than in a Struts "if" tag.
(Answered above)
I can also do things like use <s:set name="myVar" value="%{somethingFromAction()}"/>
and then, later on, access myVar like so: <s:property value="#myVar.thing"/>
to call myVar.getThing()
or even <s:property value="%{#myVar.getThing()}"/>
.
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