What is RequestProcessor in Struts?
In Struts 1.1-1.2. x RequestProcessor contains the processing logic that the Struts controller servlet performs as it receives each servlet request from the container. You can customize the request processing behavior by subclassing this class and overriding the method(s) whose behavior you are interested in changing.
What is Request processor?
Request processor is Executor (since version 7.16) capable to perform asynchronous requests in a dedicated thread pool. There are several use cases for RequestProcessor, most of them start with creating own RequestProcessor instance (which by itself is quite lightweight).
Which of the following is performed by ActionServlet and request processor?
ActionServlet and RequestProcessor 2) Forms and hyperlinks in the user interface that require business logic to be executed will be submitted to a request URI that is mapped to this servlet.
What is the limitation of creating ActionServlet instances per Web application?
What is the limitation of creating ActionServlet instances per web application? Only one instace of ActionServlet can run per web application that is the restriction from the application side.
Which of the following acts as a bridge between user invoked URI and a business method?
An Action class acts as a bridge between user-invoked URI and a business method. It provides an interaction between the contents of an incoming HTTP request and the corresponding business logic that should be executed to process this request.
What are struts for?
Struts is an open source framework that extends the Java Servlet API and employs a Model, View, Controller (MVC) architecture. It enables you to create maintainable, extensible, and flexible web applications based on standard technologies, such as JSP pages, JavaBeans, resource bundles, and XML.
Which one acts as a bridge between API request and business logic?
Controller: A class that implements operations defined by the application’s REST API. It implements an application’s business logic and acts as a bridge between the HTTP/REST API and domain/database models. A Controller operates only on processed input and abstractions of backend services / databases.
What is the Struts framework based on?
Are struts dead?
Yes, you can be surprised but after almost 18 years on the market the Apache Struts project is still maintained and under active development.
What is API Basic?
An API – application programming interface – at its most basic level, allows your product or service to talk to other products or services. In this way, an API allows you to open up data and functionality to other developers and to other businesses.
What is database API?
DB-API is an acronym for DataBase Application Programming Interface and a library that lets Python connect to the database server. Simply put, databases are the same, they interact using client-server interaction over a network. When an end-user makes a request, a browser will do the same to the web server.
How does struts ActionServlet treat all requests?
ActionServlet treats all requests made to your Struts application and delegates the “heavy lifting stuff” of handling the request to a RequestProcessor object. In a Struts application you usually have your operations performed by creating Action classes, each Action taking care of its own different stuff.
How does the controller servlet work in Apache Struts?
Forms and hyperlinks in the user interface that require business logic to be executed will be submitted to a request URI that is mapped to the controller servlet. There will be one instance of this servlet class, which receives and processes all requests that change the state of a user’s interaction with the application.
What does ActionServlet stand for in Java Model 2?
ActionServlet represents the “controller” in the Model-View-Controller (MVC) design pattern for web applications that is commonly known as “Model 2”. This nomenclature originated with a description in the JavaServerPages Specification, version 0.92, and has persisted ever since (in the absence of a better name).
What are the classes for Apache Struts action forwardingactionforward?
Two convenient classes you may wish to use are: org.apache.struts.action.ForwardingActionForward – Subclass of org.apache.struts.action.ActionForward that defaults the redirect property to false (same as the ActionForward default value).