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Set Tag (Data Tag) Example 
 

In this section, we are going to describe the Set tag . The set tag is a generic tag that is used to assign a value to a variable in a specified scope.

 

Set Tag (Data Tag) Example

                         

In this section, we are going to describe the Set tag. The set tag is a generic tag that is used to assign a value to a variable in a specified scope. It is useful when you wish to assign a variable to a complex expression and then simply reference that variable each time rather than the complex expression. 

Add the following code snippet into the struts.xml file.

struts.xml

<action name="setTag">
       <result>/pages/genericTags/setTag.jsp</result>
</action>

Now create a jsp page using <s:set> tag as  shown in the setTag.jsp page. The set tag is used to assign a value to a variable in a specified scope. The parameters name and value in the tag <s:set name="technologyName" value="%{'Java'}"/> acts as the name-value pair. Here we set the parameters as name="technologyName" value="Java".

setTag.jsp

<%@ taglib prefix="s" uri="/struts-tags" %>

<html>
  <head>
    <title>Set Tag (Data Tag) Example!</title>
  </head>
  <body>
    <h1><span style="background-color: #FFFFcc">Set Tag 
                             (Data Tags) Example!</span></h1>
      <s:set name="technologyName" value="%{'Java'}"/>
        Technology Name: <s:property value="#technologyName"/>
  </body>
</html>

Output of the setTag.jsp:

                         

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Related Tags: c jsp io include servlet sed output page generic tag this js to e des section put use ul result

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Current Comments

2 comments so far (post your own) View All Comments Latest 10 Comments:

If you set a parameter <s:set name="test" value="%{This is a test!}"/>
You can access it like this pageContext.getAttribute("test") in scriptlets

Posted by Hanny on Sunday, 12.23.07 @ 17:33pm | #43476

Hi,
I set a parameter in the above manner using a s:set (Analogous to bean:define in struts 1). But I am unable to access that new parameter in any jsp scriptlets. It always says cannot be resolved when used in scriptlets. Now there is a parameter called scope for the s:set tag which is used to set the scope of the newly created variable. I tried giving scope as page, request but still the same problem comes up. Is it not possibe to use the set tag created variable inside a scriptlet?

Posted by Arup Francis on Friday, 08.24.07 @ 15:39pm | #24039
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