jsp and java beans

Posted by JRR on Stack Overflow See other posts from Stack Overflow or by JRR
Published on 2012-09-20T03:25:39Z Indexed on 2012/09/20 3:37 UTC
Read the original article Hit count: 126

Filed under:

jsp

|

javabeans

|

race-condition

|

stateless

I am building jsp pages hosted on tomcat and am wondering if the bean instances referenced in each jsp are stateless / stateful? How do those bean instances come about? Are they (re-)created each time when the page is visited? Do I need to worry about two different users visiting the same page at the same time and getting hold of the same bean instance?

In general I find the interaction between jsp and beans quite confusing so I'd appreciate if someone can refer a tutorial / explanation of those concepts. Thanks!

© Stack Overflow or respective owner

Related posts about jsp

Passing Textbox values from one JSP to another JSP

as seen on Stack Overflow - Search for 'Stack Overflow'
hi all. I want to pass a textbox value from source JSP file to the destination JSP file on a href click event withour using javascripts. can anyone help me out in this? i tried using the following method but iam getting error like "End tag is required" <a href="/destinationFile.jsp?sDate=<%='+txtDate… >>> More
passing valus to one jsp page to another jsp page

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm retrieving values from database to table in jsp.(to a column) I want to insert that value into another table in database. To do that i'm using another jsp table to insert that value in db and i call that jsp page in my previous jsp's page form action tab. I use request.getParameter() method… >>> More
Java (JSP/Servlet): equivalent of getServletContext() from inside a .jsp

as seen on Stack Overflow - Search for 'Stack Overflow'
How should I access the ServletContext from a .jsp? For example, how can I call the getRealPath method from inside a .jsp. Here's a Servlet, which works fine: protected void doGet( HttpServletRequest req, HttpServletResponse resp ) throws ServletException, IOException… >>> More
Uploading a zip file to a jsp and extract the content in another jsp

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to upload a zip file in a jsp page and the user is sent to another jsp page after he selects and uploads the file. In this second page I want to 1.)extract the uploaded zip file. 2.)read some content from the extracted file(s) and allow the user to change/edit them 3.)save the user changes… >>> More
Java (JSP): repeating the contentType header in a "sub-jsp"

as seen on Stack Overflow - Search for 'Stack Overflow'
What happens when headers are repeated in a .jsp you include in another .jsp? For example if example.jsp starts with this: <?xml version="1.0" encoding="UTF-8"?> <jsp:root version="2.0" xmlns:jsp="http://java.sun.com/JSP/Page"> <jsp:directive.page contentType="text/html; charset=UTF-8"… >>> More

Related posts about javabeans

JavaBeans and DSLs

as seen on Stack Overflow - Search for 'Stack Overflow'
It's 2009 and we still all hold on the JavaBeans despite all their flaws, mostly because of the tooling support which we wrote in our own blood. But now we have method chaining and internal DSLs and some pressure to replace or extend JavaBeans with DSL classes. Has anyone an implementation that implements… >>> More
JavaBeans JSP dealing with GET requests

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I understand how POST works but if for example the following request is made: GET /index.jsp?page=home How do I get get this in a MVC form? Thanks >>> More
can i use javabeans with hibernate ?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello i'm using a plugin of hibernate2 in my webproject with jsp ,in my project i have a register page. Can i use javabeans to send information from a html <form> using hibernate class's ? with out hibernate i creat class with get and set like that package com.java2s; public class Lang… >>> More
Short survey on Enterprise JavaBeans usage

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I would be very appreciative if anyone who has any experience with using Enterprise JavaBeans, or who considered, but rejected the use of EJBs would respond to a short survey. The survey consists of eleven (11) questions, and should take five (5) minutes or less to complete. I am collecting… >>> More
Technical Article: Oracle Magazine Java Developer of the Year Adam Bien on Java EE 6 Simplicity by Design

as seen on Oracle Blogs - Search for 'Oracle Blogs'
Java Champion and Oracle Magazine Java Developer of the Year, Adam Bien, offers his unique perspective on how to leverage new Java EE 6 features to build simple and maintainable applications in a new article in Oracle Magazine. Bien examines different Java EE 6 architectures and design approaches… >>> More