How can we get object from JSP to servlet?

3 Answers

1. Client (usually, a web browser) fires HTTP request.
2. Server retrieves HTTP request.
3. Servletcontainer creates new HttpServletRequest and HttpServletResponse objects.
4. Servletcontainer invokes appropriate servlet with those objects.
5. Servlet processes request and forwards request and response to JSP.

How do I forward a JSP request to a servlet?

2 Answers. You can just use on a servlet URL. The servlet doXxx() method will just be invoked with the current request/response. Note that the servlet cannot forward to another JSP afterwards.

How do I move an object from one JSP to another?

1. If you are using forward (jsp:foprward or RequestDispatcher) from one page to another, then use request.setAttribute(..) and request.getAttribute(), because you are within the same request.
2. If you are using redirect (via response. sendRedirect()), then use request. getSession(). setAttribute(..) and request.

How can we get ArrayList from servlet to 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.

How can a JSP receives the user submitted form data?

Reading Form Data using JSP

1. getParameter() − You call request.
2. getParameterValues() − Call this method if the parameter appears more than once and returns multiple values, for example checkbox.
3. getParameterNames() − Call this method if you want a complete list of all parameters in the current request.

How can we transfer data from one JSP to another JSP?

Detail : The values which are to be sent from source jsp are set using setAttribute() method of application object which takes the name of attribute as first argument and the value of attribute as the second argument. The name of attribute can be any user defined string.

How can we pass a variable from one JSP to another JSP?

5 Answers

1. Store it in the session. // Memorise any passed in user.
2. Store it as a hidden field in the form.
3. Store it in a cookie.
4. Persist it on the client side in sessionStorage.
5. Not really another option but a mechanism – pass it in the URL:

https://www.youtube.com/watch?v=9tTCkWTkU6s