What is request dispatcher in JSP?
public interface RequestDispatcher. Defines an object that receives requests from the client and sends them to any resource (such as a servlet, HTML file, or JSP file) on the server.
What is a dispatcher in Java?
A Dispatcher is used to build an application by aggregating several services. The dispatcher maintains a registry of Service objects. A Service is categorized by the type of processing it performs: A command processing service processes the input data and generates output data.
What is RequestDispatcher used for?
Defines an object that receives requests from the client and sends them to any resource (such as a servlet, HTML file, or JSP file) on the server. The servlet container creates the RequestDispatcher object, which is used as a wrapper around a server resource located at a particular path or given by a particular name.
What is HTTP request dispatcher?
Request Dispatcher is an interface whose implementation defines an object which can dispatch the request to any resources on the server. RequestDispatcher interface is used to forward or include the response of a resource in a Servlet.
What is jsp life cycle?
A JSP life cycle is defined as the process from its creation till the destruction. This is similar to a servlet life cycle with an additional step which is required to compile a JSP into servlet.
Can we use request dispatcher in jsp?
The RequestDispatcher interface provides the facility of dispatching the request to another resource it may be html, servlet or jsp. This interface can also be used to include the content of another resource also. It is one of the way of servlet collaboration.
Can we call JSP from servlet?
Invoking a JSP Page from a Servlet. You can invoke a JSP page from a servlet through functionality of the standard javax. servlet.
What is difference between GenericServlet and HttpServlet?
The main difference between GenericServlet and HttpServlet is that the GenericServlet is protocol independent that can be used with any protocol such as HTTP, SMTP, FTP, CGI etc. while HttpServlet is protocol dependent and is only used with HTTP protocol.
Is JSP front end or backend?
JSP is built on top of the Java Servlet specification. While it is not uncommon to see JSP used as the frontend for older JSF applications, Facelets is the preferred view technology for modern JSF implementations. While JSP may not be your first choice for building dynamic web pages, it is a core Java web technology.
How to send request to dispatcher using JSP form?
We have enter the name and password and after that we click on Submit button. This action calls upon dispatcher.jsp page and transfers the request using the getRequestDispatcher (“/form.jsp”).forward (request, response) method.
What is the use of requestdispatcher interface in Java?
The RequestDispatcher interface provides the facility of dispatching the request to another resource it may be html, servlet or jsp. This interface can also be used to include the content of another resource also. It is one of the way of servlet collaboration.
What is requestrequestdispatcher in servlet?
RequestDispatcher in Servlet. The RequestDispatcher interface provides the facility of dispatching the request to another resource it may be html, servlet or jsp. This interface can also be used to include the content of another resource also. It is one of the way of servlet collaboration.
How to transfer a JSP request to another JSP page?
This action calls upon dispatcher.jsp page and transfers the request using the getRequestDispatcher (“/form.jsp”).forward (request, response) method. If you have entered the name, the request is transferred to welcome.jsp page, otherwise request is transferred back to the loginform.jsp page.