The Nested Tag Library Tags

Using the Nested Tag Library

To use the Nested Tag Library in a Struts application, your application's JSPs must declare their use of the library with a JSP taglib directive:

<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested" %> 

Notice that the prefix attribute is set to "nested." This attribute can be set to whatever you want; however, "nested" is the accepted default for the Nested Tag Library. The prefix attribute declares the prefix that each tag must have when it is used in the JSP, as shown here:

<nested:nest property="results">

Because "nested" was defined as the prefix, the nest tag was used as shown. However, if you choose to use a prefix of "strutsnest", the tag would be used as follows:

<strutsnest:nest property="results">

Note 

Modern application servers use the uri attribute of the taglib directive to automatically resolve the location of the tag library descriptor file. Older application servers that support only JSP version 1.1 and/or version 1.0 require that tag libraries be registered in the web.xml file so that they can be resolved, as shown here:

<taglib>   <taglib-uri>http://struts.apache.org/tags-nested</taglib-uri>   <taglib-location>/WEB-INF/tlds/struts-nested.tld</taglib-location> </taglib>