How does Struts-config xml work?
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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 meant by an action in Struts?
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.
What is execute method in Struts?
The method execute is where we placed what we want this controller to do in response to the hello. action . Method execute of HelloWorldAction. public String execute() throws Exception { messageStore = new MessageStore() ; helloCount++; return SUCCESS; } Note that method execute declares it throws an Exception.
How does Struts action forward work?
An ActionForward represents a destination to which the controller, RequestProcessor, might be directed to perform a RequestDispatcher. forward or HttpServletResponse. sendRedirect to, as a result of processing activities of an Action class.
How many Struts xml are supported in an application?
two
The struts application contains two main configuration files struts. xml file and struts.
What is POJO based actions?
In struts 2, action class is POJO (Plain Old Java Object). POJO means you are not forced to implement any interface or extend any class. Generally, execute method should be specified that represents the business logic.
What is forward name in Struts config xml?
Contains the global forward definitions. The forward name is the logical name used to map to a specific JSP. The logical name mappings for commonly used presentation pages are specified here. The element contains the logical name and the name of the corresponding resource which it maps to.
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 the difference between struts and spring?
Struts is a framework based on MVC architecture that stands for model view and Controller architecture….Difference between Spring and Struts architecture.
| Spring | Struts |
|---|---|
| It does not support tag library. | It supports tag library directive. |
| It has loosely coupled modules. | It has tightly coupled programming modules. |
What is parameter in Struts config xml?
The parameter attribute defines arguments that are passed to the class specified in the type attribute.
Which of the following is true about action tag in Struts xml?
Q 13 – Which of the following is true about action tag in struts. xml? A – We define action tags corresponds to every URL we want to access. B – we define a class with execute() method which will be accessed whenever we will access corresponding URL.
