How do I redirect from one action to another action in struts2?
The redirect result type calls the standard response. sendRedirect() method, causing the browser to create a new request to the given location.
How does Struts config XML work?
The controller servlet uses a struts-config. xml file to map incoming requests to Struts Action objects, and instantiate any ActionForm objects associated with the action to temporarily store form data. The Action object processes requests using its execute method, while making use of any data stored in the form bean.
What is parameter in struts config xml?
The parameter attribute defines arguments that are passed to the class specified in the type attribute.
What configuration files are used in struts?
xml File. The struts. xml file contains the configuration information that you will be modifying as actions are developed. This file can be used to override default settings for an application, for example struts.
What is ActionForm in struts2?
An ActionForm is a JavaBean optionally associated with one or more ActionMappings. Such a Bean will have had its properties initialized from the corresponding request parameters before the corresponding action’s execute() method is called.
Which of the following feature is present in Struts 2?
The important features of struts 2 framework are as follows: Configurable MVC components. POJO based actions. AJAX support.
How do you pass parameters to Struts Action class?
In this method, we have to do the following:
- Declare a property named params of type Map – this map will hold all the parameters passed to the action class from the struts. xml file.
- Make the action class implementing the com. opensymphony. xwork2. config. entities.
How do I get parameters in struts2?
S2 provides a clean way to fetch the request parameters in you action class all you need to follow these simple rules.
- Create a property with same name as request parameter name.
- create getter and setters for this property or make property public (for S2.1+)
What is filter dispatcher in struts?
FilterDispatcher was the filter that was provided by Struts 2 for handling all request which needs to be controlled by struts framework. After Struts 2.1. 3 use of this filter was deprecated.
What is the use of web XML file in struts?
The web. xml web application descriptor file represents the core of the Java web application, so it is appropriate that it is also part of the core of the Struts framework. In the web. xml file, Struts defines its FilterDispatcher, the Servlet Filter class that initializes the Struts framework and handles all requests.
What is action in Struts 2?
Struts 2 – Actions. Actions are the core of the Struts2 framework, as they are for any MVC (Model View Controller) framework. Each URL is mapped to a specific action, which provides the processing logic which is necessary to service the request from the user. But the action also serves in two other important capacities.
How to do a “forward-only” task in struts?
Struts comes with a special action controller class called ForwardAction (org.apache.struts.actions.ForwardAction), to do the “ forward-only ” task as name described, and allow you to access the specified JSP page directly. Declare a “ /Welcome ” web path, type attribute as ForwardAction class, and forward it to Welcome.jsp page.
How to extend actionsupport with no argument method?
If the no-argument method is not specified, the default behavior is to use the execute () method. Optionally you can extend the ActionSupport class which implements six interfaces including Action interface. The Action interface is as follows − Let us take a look at the action method in the Hello World example −
Which file will be invoked by the framework in case action result?
Following is the file which will be invoked by the framework in case action result is ERROR which is equal to String constant “error”. Following is the content of AccessDenied.jsp