So I'm using a bean on a JSP page to store some data, like so: <jsp:useBean id="data" class="myclass" scope="session" /> Is there anyway to access this bean from a servlet at a later time in the same session? EDIT: Apparently I'm not accessing the same session when I load the jsp page and the servlet. I'm printing out the session ID ...
I am looking for an efficient (code-wise, and runtime-wise) means to identify whether a JavaBean object has changed. I was thinking of holding a clone of the class that could be compared on demand to the class instance. This is similar to the strategy used by CSLA.net. The question is, is there already a means to achieve this using n...
I believe I understand what Java Beans are: Java class(es) which contain a no-arg constructor, are serializable, and expose their fields with getters and setters. Does a Java Bean have to expose all of its fields in order to qualify as a bean? If no, does it even have to expose any? May Java Beans include constructors with arguments as...
I need to do very simple thing - pass current URL from JSF (2.0) page to the managed bean. This is needed to get URL of the login form which will redirect user back to the current page after login. (I use GAE and the bean is the wrapping around its user service, if it does matter). Any obvious way I tried doesn't work <c:set /> - doesn't...
I have implemented a few Java applications now, only desktop applications so far. I prefer to use immutable objects for passing the data around in the application instead of using objects with mutators (setters and getters), also called JavaBeans. But in the Java world, it seems to be much more common to use JavaBeans, and I can't under...
I have a JSP form. My requirement is to get this form's data and create a java beans object on the server side. Example: my form has fields like Name, SSN, EMAIL & Phone Number public class Test { long ssv= 1282199222991L; long phone= 4082224444L; String email = "[email protected]"; String name="abcdef" } From the knowledg...
I'm working with indexed properties (using struts and java/jsp). We have a dynamic table that can add/delete rows/items in the table. The adding of rows works as intended - I see the new rows in the form in the action class. The deleted rows do not get set (obviously), but they are also not removed from the list. I have implemented a voi...
My final year project topic is Web-services using SOA. In this we were planning to build individual components like Login, Profile Page, Captcha, etc.. We will then build a demo web application using those components. I have two questions : Do these components(Login, Profile Page, Captcha) qualify as services? Can these components be...
I create beens with Spring in ApplicationContext.xml like below: <bean id="myClass" class="com.classes.MyClass"> <property name="Url" value="https://localhost"></property> <property name="Name" value="admin"></property> <property name="Password" value="admin"></property> </bean> package com.classes public class MyClass {...
Hi everyone, I'm in a bit of a dilemma on how to connect the above mentioned three technologies. I'm still a student so please bare with me on this as I try to explain my problem. For an assignment I have to create a simple form that uses JSP for the view with the Model and the controller being Servlets, the communication needs to be do...
I'm trying to make a deliberate effort to write code that follows proper convention, even when it might add complexity, and so far I've succeeded but I'm noticing a trend in my programs. My project is small, a javaee webapp with only a handful of servlets, follows MVC design, and makes use of beans as the model. My problem is that my b...
Hi all, im trying to build a java bean component using JPanel that can display a background. All is ok, but now i have an image property and i would be able to set it from property editor. Netbeans has a good image property editor used to set JLabel Icon etc... so, there is a way to use this editor for my porpouse? Thanks. ...
I wrote next jsp: <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>JSP Page</title> <link rel="stylesheet" type="text/css" href="style.css" /> </head> <body> <h1>Monster Calculator</h1> <FORM METHOD="POST" ACTION="Controller"> N1: <input type ="text" name="nr1" value="0...
I have to get 2 numbers and an operation from a jsp file, using a java bean. After submitting the numbers, take them to a servlet from that Java Bean and return an result of them. Problem is that the java bean fields are never completed with the numbers wtitten in textboxes. So, I have, index.jsp's body: <html> <head> <meta http-equ...