Scope « Bean « JSP-Servlet Q&A

1. Scope of jsp:useBean


<jsp:useBean id="username" class="java.lang.String" scope="application"/>


<jsp:include page="include.jsp"/>
This gives an error saying “username” is undefined in include.jsp, even though the scope of Bean is application…


Page is the same as request, the elements for the page are only available at the time the page is loaded, or upon each request. Session means the information contained has visibility across multiple pages, for as long as the users session lasts. You might need this scope for a shopping cart-type application or wherever users need to persist their info ...

4. useBean with different scope on the same bean?

A jsp uses a simple javabean(not EJB) with applicationscope(data never to change unless some admin updates db with presentationdata), and another jsp uses the same bean, BUT is only interested in accessing it's state in pagescope. Does this affect the container managing the bean in a "wrong" way or is this approach OK? I was wondering when the thread comes to ...

5. jsp:useBean scope="application" help me wat is scope?

1. If Im using this useBean action tag:- then If I close my browser & server is still running then obj object of class would be available for the new screens of the same application or not. 2. If Im using this useBean action tag:- then If I close my browser then "obj" ...

6. end session scope of bean

Hi I have a bean that will have a session scope across a number of jsp's and servlet's. It will hold a primary key parameter so as another bean can look up the info from the database to populate the form.jsp I have. The primary key parameter will be chosen in a choice.jsp page when the user wants to update some ...

7. Bean Scope

8. jsp:useBean scope conception

9. bean scope

11. erasing bean from scope

12. Scope of jsp:useBean

Hello sir,madam <%@ page import="businessData.visitorAddresses.*"%> <%{%> <%}%> : : In Tomcat I get the following error org.apache.jasper.JasperException: /useBean.jsp(13,0) jsp.error.useBean.duplicate Now even if I declare the ...

13. scope of bean in jsp

14. UseBean, scope question.

i want to know what does the exactly meaning of the scope that we set in usebean tag. (application, request, page). Aparently i know that it means that the object will be available for the particular time ... but what i want to ask , leme explain. Suppose i have to print some data in jsp page which is in a ...

15. bean not found within scope

Hi, I have a weird problem. I know 'bean xxx not found within scope' has occured before for a lot of people and have been answered before. But my problem is, the code is in production environment and the error has occured NOW. It doesn't happen in the development environment. The JSP is trying to access a session variable using

16. jsp:useBean and scope

If a bean already exists, will jsp:useBean use it regardless of the scope in which it is present? or will it use the bean only if it is present in the scope specified by its scope attribute. Because I have a jsp page which I am trying to analyze for performance, its part of a whole project which I do not ...

17. setting scope of a bean in Servlet

18. [solved]bean mySearchBean not found within scope

This is my JSP Page! <%@page contentType="text/html" pageEncoding="UTF-8"%> <%@page import="utility.*"%> <%@page import="java.util.*"%> <% response.setHeader("Cache-Control", "no-cache"); response.setHeader("Expires", "Sun, 15 Jan 1998 17:00:00 GMT"); response.setHeader("Pragma", "no-cache"); response.setDateHeader("Max-Age", 0); // String results = (String) request.getAttribute("results"); //String keyWords = (String) request.getAttribute("keyWords"); String subQuery=request.getParameter("key"); if(subQuery!=null){ int bracket=subQuery.indexOf('('); if(bracket!=-1){ subQuery=subQuery.substring(0,bracket); } } String results=mySearchBean.getResult(); MyLog.logPrint(null, "results in index are "+results+"\n"); String keyWords=mySearchBean.getKeyWords(); ...

20. Difference between using Session Scope or Stateful Session Bean

Both the session scope and the SFSB allow to keep user specific data across multiple requests on the server side. Session scope you can only use it in the context of a web application whereas SFSB is more generic and you can it for web and non-web application. Usually if you develop a web application serving only web clients you will ...