How do I forward a JSP request to a Servlet?

How do I forward a JSP request to a Servlet?

When dynamically including or forwarding to a servlet from a JSP page, you can use a jsp:param tag to pass data to the servlet (the same as when including or forwarding to another JSP page). For more information about the jsp:param tag, see “JSP Actions and the Tag Set”.

What is the Servlet path?

The servlet path represents the path of the main DispatcherServlet. The DispatcherServlet is an actual Servlet, and it inherits from HttpSerlvet base class. The default value is similar to the context path, i.e. (“/”): spring.

Can we call JSP from Servlet?

Yes, you can call a JSP page from a servlet. A JSP can be called (navigated to) in couple of ways, by doing: Servlet response’s send redirect. Request dispatcher’s forward.

How does a Servlet communicate with a JSP page?

A Servlet can communicate with JSP by using the RequestDispatcher mechanism. RequestDispatching is the process hand overing the request to another web component,and this component takes the response of generating the response.

How do you call a servlet?

Calling a Servlet Programmatically To include another servlet’s output, use the include() method from the RequestDispatcher interface. This method calls a servlet by its URI and waits for it to return before continuing to process the interaction. The include() method can be called multiple times within a given servlet.

What is request context path?

The context path is the portion of the request URI that is used to select the context of the request. The context path always comes first in a request URI. The path starts with a “/” character but does not end with a “/” character. For servlets in the default (root) context, this method returns “”.

How do I find the actual path of a servlet on a server?

The ServletContext is in servlets available by the inherited getServletContext() method: String relativeWebPath = “/images”; String absoluteDiskPath = getServletContext(). getRealPath(relativeWebPath); File file = new File(absoluteDiskPath, “imagetosave.

How do servlets communicate?

The communication between the Java servlets is known as Servlet communication. It is sending users request, and the response object passed to a servlet to another servlet. We are using the method getParameter(), which is basically used to get the input from user value in a specified field.

How do you call servlet from index HTML?

Just create a class extending HttpServlet and annotate it with @WebServlet on a certain URL pattern. Or when you’re still on Servlet 2.5 or older (the annotation was new since Servlet 3.0), then register the servlet as in web. xml and map it on a certain URL pattern via .

How can I call servlet without form and submit button?

How can I call servlet without and submit button? You can use the same URL for the servlets as you use for a form action. P.S. Your URLs should not be page-relative. Use server-relative URLs that start with the context path.

What is context path in JSP?

contextPath object. This contextPath can be useful for constructing a path to you web resources such as CSS, JavaScript and images. Libraries that you’ll need to enable the JSP Expression Language (EL) in your JSP Pages, which usually already included in a Servlet container such as Apache Tomcat.

Where is context path in Web application?

The typical way of getting the context path is through the HttpServletRequest class. Simply you can add a HttpServletRequest parameter to your controller method and then get the context path using getContextPath() method. Now that you get the context path, you can pass it to the services that need it.

How can I get getAttribute in JSP?

  1. First create data at the server side and pass it to a JSP. Here a list of student objects in a servlet will be created and pass it to a JSP using setAttribute().
  2. Next, the JSP will retrieve the sent data using getAttribute().
  3. Finally, the JSP will display the data retrieved, in a tabular form.