Struts2 tag get s: Param value subpage get s: include S: Param Value

The parameter <s: param> is used on the home page. The parameter cannot be obtained using the struts2 tag on the Child page.

<S: property value = "# request. Operation"/>

Or <s: property value = "operation"/>

Or <s: property value = "% {# ATTR. Operation}"/>

No value is obtained,

I found a buddy's original article on the Internet:

Explanation:

I read the struts2 document, saying that ognl cannot be obtained from valuestack because include does not update valuestack. This document also describes how to use jstl on the page:

$ {Param. Operation}

However, I do not want to mix struts labels and jstl labels for the purpose of unified the whole site. Therefore, I hope to solve it only by using struts2. According to the Buddy's article, the solution is as follows:

Input parameters on the parent page:

<S: Include value = "/JSP/include_vedio/head. JSP "> <% -- upload the page title -- %> <s: Param name =" page_title "> modify the page title </S: param> </S: Include>

Add the following code to the subpage:

<% @ Page import = "com. opensymphony. xwork2.ognl. ognlvaluestack "%> <% (ognlvaluestack) request. getattribute ("struts. valuestack ")). set ("page_title", request. getparameter ("page_title"); %> <s: If test = "page_title! = NULL "> <s: Property escape =" false "value =" page_title "/>-website </S: If> <s: else> website </S: else>

Then you can use the struts2 tag <s: property value/> to obtain the value.

From: http://wenku.baidu.com/view/b23a4e26aaea998fcc220eef.html

Thanks to the original author. This article is based on the original article.