Action-
For struts based application we need to create action which will do the request processing and having business logic.
-> It can be a simple class implementing execute method.
Example:
package com.javasafari;
public class Test {
public String execute(){
return "success";
}
}
-> It can be a class implementing Action interface and implementing execute method.
Action interface provide some constant mentioned below:
SUCCESS means that action execution is successful.
ERROR means that action execution is failed.
LOGIN means that user is not logged-in.
INPUT means that validation is failed.
NONE means that action execution is successful but no result will be displayed to the user.
Example:
package com.javasafari;
import com.opensymphony.xwork2.Action;
public class Test implements Action{
public String execute(){
return SUCCESS;
}
}
-> We can also create action by extending ActionSupport class.
We can use this method of creating action as this class implements other interfaces like Validateable,ValidationAware,TextProvider,Localization etc.
Example:
package com.javasafari;
import com.opensymphony.xwork2.ActionSupport;
public class Test extends ActionSupport{
public String execute(){
return SUCCESS;
}
}
For every action we have to specify in web.xml:
<action name="test" class="com.javasafari.Test"
method="execute">
<result name="success">/Output.jsp</result>
</action>