Hi, Head First book says about include directive as include code from any other file into the JSP file at translation time, which can't be changed dynamically. However, I included a JSP file in the include directive, which generates a number randomly every time I access the page with include directive. And every time a new number gener...
Hi, could anyone tell me how can I enable EL expression in JSP version 2.0? Every time I'm getting EL expression as an String literal in the JSP as an output. Here's the DD which the container is using to sending request to servlet, and then servlet dispating request to JSP: <web-app xmlns="http://java.sun.com/xml/ns/j2ee" ...
I'm debugging an application on a remote server running JBoss using Eclipse. My particular problem is a NullPointerException in a JSP. The JSP has too much Java code inside scriptlets but, unfortunately refactoring is not going to be an option. Finding the line that throws the NullPointerException has been incredibly challenging and I...
I'm using some legacy java code that consists of several static classes from with in a Grails app under tomcat. When I only have one user using the web application everything works fine. When two users use the application things start to go wrong. I believe it's because the static classes maintain resource locks such as sockets. Am I cor...
I have the following code to set a userId variable: (userId set in prior code) <c:set var="userId" value="(Cust#${userId})" /> Which produces the following string: (Cust#${userId}) The following code works as expected, however: <c:set var="userId" value="(Cust# ${userId})" /> displays the following string (Cust# 0001) . Why does...
Ill try to be as descriptive as possible. situation: struts tag's not being resolved on a jsp. When you look at what should resolve as links you see: <html:link page="/dto/initDTO.do"><b><i>Design To Order Control System ( DTOCS )</i></b></html:link> Which leads me to believe that the struts tag is not being resolved. The source o...
I've got some strange bug: when I open page first time in some browser all references has jsessionid parameter (like <a href="/articles?name=art&jsessionid=5as45df4as5df"..>). When I press F5 or refresh the page by any other ways all that stuff is disappeared and everything works fine until I close my browser (and all tabs should be clo...
I am writing a small widget in struts which I want to include. The height of the widget should be auto unless I pass in a param of height. For example: # Example 1: <s:include value="myWidget.jsp"> <s:param name="height">300 px</s:param> </s:include> # Example 2: <s:include value="myWidget.jsp"> </s:include> Inside myWidget.jsp I...
Currently I am working on web project which uses JSP/Servlet and struts framework. We are using cache mechanism. I want to clean some of the session attribute from all the active sessions on particular event (For e.g. in case of refreshing cache). So what is best way to implement same ? ...
I have added native method in java bean code. Then i have copied .dll file in System32 folder. while using javabean in JSP. it gives an Error: HTTP Status 500 - type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jasper.JasperE...
i am trying to upload an image from a jsp page using servlet. but how can i get the file in my servlet from the jsp file. ...
We have been debating between using servlets or JSP pages and we want to know what the common uses of one versus the other. If you read any online guide that you can point us out, will be very grateful. ...
This question asks about using JSP's scripting language outside a J2EE container. There are some good pointers there. However, I'm curious if I can use JSTL XML tags in my app. Any good pointers? Thanks ...
I am creating a registration form which contains two submit buttons. I need to know which button is clicked in the form in my servlet code? ...
I am having a web form(JSP) which submits the data to different application, hosted on different server. After submitting the form data, that application redirect back to same JSP page. Now, I want to save the entered the data. What are the different approaches to retain the submitted data in web form. I would not prefer to store the dat...
Hi, Could anyone please clarify the defination of attribute? for example, in the following code, what is an attribute: request.setAttribute("ja",new foo.Employee()); Is the attribute in the above code an object of type foo.Employee(), or it is key/value pair, or it is actually "ja"? ...
Hi! I have a form like this, in a .jsp page (using Struts + Tiles): <%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %> <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %> <%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" p...
In my web application, a series of jsp pages are navigated. These jsp pages appear on the Right Hand side (frame) of the screen. On the left frame, I have an applet. This applet is common to all jsps. From all of the jsps, I want to invoke a method on the applet. The javascript code is inside of each jsp. Is there a way to do this ? An...
i have some jsp code that reads in Servlet Context parameters from a web.xml file. these parameters hold database connection information so each time the SID or user/password or servername changesm, the programmer doesnt have to go re-code; the user can just change the web.xml file. <context-param> <description>database user name</des...
I have a website that uses JSP as its view technology (and Spring MVC underneath). Unfortunately, JSP is just a pain to use for anything that doesn't involve an HTTP session. I would like to be able to occasionally send my users some email, and I want to use something JSP-like to render the email's contents. Technologies I'm aware of ...