How to get JSP scriptlet value in struts tag

问题

Here is my code:

<% request.setAttribute("lcItem", "Hello"); %>

If I do as following, I'm not getting the value:

<s:property value="%{lcItem}" />
<s:property value="lcItem" />

Any suggestions?

回答1:

This works perfectly..

<%       
   request.setAttribute("lcItem", LeftContentItem);
%>

<s:property value="#request['lcItem']" />

Note: According to the Scope we use we should specify the #request .. etc

回答2:

You can write your code 2 ways

1. <% request.setAttribute("lcItem", "Hello"); %>
2. <% pageContext.setAttribute("lcItem", "Hello"); %>

then if you want to access these values in Struts2 Components you might use #attr. as prefix.

Example

<s:property value="#attr.lcItem">

Note: It will work fine with request and "pageContext".

<s:property value="lcItem" /> will not work because "lcItem" is not available in the Value Stack.

来源：https://stackoverflow.com/questions/724887/how-to-get-jsp-scriptlet-value-in-struts-tag