Skip to main content

Struts2 - Set Tag (Data Tags)

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 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 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:

Labels:

Popular posts from this blog

Struts2 - Submit Tag (Form Tags)

In this section, we are going to describe the submit tag . The submit tag is a UI tag that is used to render a submit button. The submit tag is used with the form tag to provide asynchronous form submissions. The submit can have three different types of rendering: • input: renders as html <input type="submit"...> • image: renders as html <input type="image"...> • button: renders as html <button type="submit"...> Add the following code snippet into the struts.xml file. struts.xml <action name="submitTag">   <result>/pages/uiTags/submitTag.jsp</result> </action> Create a jsp using the tag <s:submit> that renders a submit button. This tag contains various parameters: The value parameter presets the value of input element. In our 1st case we have set it to " Submit " The type parameter sets the type of submit to use. Valid values are input, button and image. In o...
Post a Comment
Read more

Struts2 - Radio Tag (Form Tags)

In this section, we are going to describe the radio tag. The radio tag is a UI tag that renders a radio button input field. Add the following code snippet into the struts.xml file. struts.xml <action name="radioTag" class="net.struts2.checkboxlistTag">   <result>/pages/uiTags/radioTag.jsp</result> </action> Create an action class with two lists as shown below: checkboxlistTag.java package net.struts2; import com.opensymphony.xwork2.ActionSupport; import java.util.*; public class checkboxlistTag extends ActionSupport{      private List fruits;   private List animals;     public String execute()throws Exception{   fruits = new ArrayList();   fruits.add("Apple");   fruits.add("Mango");   fruits.add("Orange");   fruits.add("Pine Apple");  ...
Read more

Struts Generic Tags

The struts generic tags are used to control the execution flow when pages are rendered. Another use of struts generic tags are data extraction. Further Generic Tags are classified into Control Tags and Data Tags. Control Tags: The Control Tags are used for flow control, such as if, else and iterate. Here are the list of Control Tags: * if tag - Details * elseIf tag - Details * else tag - Details * append tag - Details * generator tag - Details * iterator tag - Details * merge tag - Details * subset tag - Details Data Tags: The Data Tags are used for data manipulation or creation, such as bean, push, and i18n. Here are the list of Data Tags: * action - Details * bean - Details * date - Details * include - Details * param - Details * set - Details * text - Details * property - Details Struts UI tags: Struts UI Tags are mainly designed to use the data from your action/value stack or from Data Tags. These tags are used to display the data on the...
Read more