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Dealing with Collections (Maps, Lists, and Sets) in the framework comes often, so here below please there are a few examples using the select tag. The OGNL documentation also includes some examples.

Syntax for list: {e1,e2,e3}. This idiom creates a List containing the String "name1", "name2" and "name3". It also selects "name2" as the default value.

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<s:property value="#fib =:[#this==0 ? 0 : #this==1 ? 1 : #fib(#this-2)+#fib(#this-1)], #fib(11)" />

JSP 2.1

Under JSP 2.1 the # character is now used by the JSP EL.

This may cause problems with some applications that use the OGNL # operator.

One quick-fix is to disable the JSP EL in a JSP 2.1 container (like GlassFish) by adding a jsp-config element to the web.xml

  <jsp-config>
    <jsp-property-group>
      <url-pattern>*.jsp</url-pattern>
      <el-ignored>true</el-ignored>
    </jsp-property-group>
  </jsp-config>

Next: Tag Syntax