在Struts Action对象中得到类似jsp页面application的ServletContext

今天需要把数据存在网站程序全局范围，需要在struts Aciton对象中得到 ServletContext对象，与jsp页面的application一样。在google中搜索到如下帖子。转帖于此：

How to get 'application' in Struts Action class? （转自：http://forum.java.sun.com/thread.jspa?threadID=609998&messageID=3346689）

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How to get 'application' in Struts Action class?  

Mar 23, 2005 7:45 PM

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Hello,

I have a question on how to get 'application' in Struts Action class.

In the jsp file, i have set an application attribute:

<%

applicaiton.setAttribute("userId", "testUser");

%>

But how to get this application attribute in Struts Action class?

So far I only know how to get session in Struts Action class by using:

(HttpServletRequest)request.getSession();

 

[Dukes Earned 1425] evnafets

Posts:7,577

Registered: 29/04/03

Re: How to get 'application' in Struts Action class?  

Mar 23, 2005 8:08 PM (reply 1 of 2)

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The "application" in a JSP page is the ServletContext object.

In a standard servlet you can use

ServletContext application = getServletConfig().getServletContext();

In a Struts Action class, just have to get hold of the servlet first

ServletContext application = getServlet().getServletConfig().getServletContext();

Cheers,

evnafets

 

[Dukes Earned 0] nonameisname

Posts:24

Registered: 8/13/03

Re: How to get 'application' in Struts Action class?  

Mar 23, 2005 8:33 PM (reply 2 of 2)

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Hi evnafets,

Thanks a lot for your help. It works.

By the way, i found that it is possible to get ServletContext in Struts in two ways:

ServletContext application = getServlet().getServletConfig().getServletContext();

or

ServletContext application = getServlet().getServletContext();

Both work fine. Any concern about the 2nd way? It does not getServletConfig() but instead it straight away getServletContext().

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