Can we call JSP from Java?
Table of Contents
Can we call JSP from Java?
First to call a java class from JSP page: you need to instantiate an instance from this class. If i am not mis understood, you are looking for JSP page to be opened in a browser via java class? if yes, you can use Desktop API. Also keep in mind that your JSP page should be placed in a web container(Tomcat etc.)
Is a JSP A servlet?
A JSP is NOT a servlet. However the container like Tomcat use Jasper engine to compile a JSP into a servlet class. A jsp or (Java Server Page) is a dinamically generated web page, while a servlet is an implementation of a server feature.
How can servlet call a JSP error page?
If any type of exception occurs while executing an action, the servlet catches it, sets the javax. servlet. jsp. jspException request attribute to the exception object, and forwards the request to the error JSP page.
How JSP call from servlet explain with example?
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….
- String nextJSP = “Welcome. jsp”;
- RequestDispatcher dispatcher = getServletContext(). getRequestDispatcher(nextJSP);
- dispatcher. forward(request,response);
How do you call a JSP file?
Just extend HttpServlet and map it in web. xml with a certain url-pattern . Then just have the HTML links or forms in your JSP to point to an URL which matches the servlet’s url-pattern . The without method attribute (which defaults to method=”get” ) and the links will call servlet’s doGet() method.
How can I get error message in JSP?
To create a JSP error page, we need to set page directive attribute isErrorPage value to true, then we can access exception jsp implicit object in the JSP and use it to send customized error message to the client.
How are JSP pages handled?
In JSP, there are two ways to perform exception handling: By errorPage and isErrorPage attributes of page directive. By element in web.
How can we get response from servlet 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.