Struts2 Data Tags

Apache Struts is an open-source framework used to develop Java web applications. We started introducing struts generic tags in the November issue. In this section, we will continue further with the data tags (generic tags)
provided with struts 2 framework and the rest will be included in the subsequent issues of the magazine.

Just download the zip file
“struts2datatags.zip” from any link given below of each page of this article, unzip it and copy this application to the webapps directory of Tomcat. Start tomcat and write http:// localhost:8080/struts2datatags/index.jsp to the address bar. You can examine the result of each tag from this page.

1. Action Tag (Data Tag) Example

The action tag is a generic tag that is used to call actions directly from a JSP page by specifying the action name and an optional namespace. The body content of the tag is used to render the results from the Action. Any result
processor defined for this action in struts.xml
will be ignored, unless the executeResult parameter is specified.

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

struts.xml

<action name=”actionTag”
class=”net.javajazzup.actionTag”>
<result name=”success”>/pages/dataTags/
success.jsp</result>
</action>

Create an action class as shown below:

actionTag.java

package net.javajazzup;
import
com.opensymphony.xwork2.ActionSupport;
public class actionTag extends ActionSupport
{
public String execute() throws Exception{
return SUCCESS;
}
}

Now create a jsp page using <s:action> tag as shown in the success.jsp page. The action tag is used to call actions directly from a JSP page by specifying the action name and an optional namespace.