servlets

Google app engine static jsp files

Hi, I am building an application on GAE and let's say I just want a plain about page for the application. The about.jsp file should or should not have an servlet class? in in web.xml I have something like <servlet> <servlet-name>application</servlet-name> <servlet-class>application.applicationServlet</servlet-class> </servlet>...

How to find session variable present or not

How i can find values is set to variable in session or not? if(session.getAttribute("tot_demand"))//need to change //if value is already set then do this. else //if not set then do this. Please answer what i need to write for above code. Thanks in advance. ...

How to configure Spring to call an image serving servlet from the dispatcher servlet?

I've written the code for a servlet to serve images in my app from a url such as: /imgsrv?imgid=12345 So this would be one additional servlet in the app besides the Dispatcher servlet. The problem is, I don't know how do you configure Spring to call this new servlet from the Dispatcher servlet? ...

Java Hibernate and servlets with Adobe Flex + Model View Controller Pattern ?

Hi Guys, I am preparing a document for a project. The project's backend is developed in Java, frontend is adobe flex. I am not sure about the correct way of describe the project in Model-View-Controller way. For Model layer: Using Hibernate Java beans to implement all the business logic and persistence? For View Layer: Using Adobe ...

making a servlet in netbeans and index.jsp

i am trying to make a servlet in netbeans. It has to be called from an html form and take some data from it. i overwrite doget and dopost putting just some testing outs in them. when i try to run the servlet it only shows a hello word jsp page i found out that this was the index.jsp page that the servlet had by default. How can i make...

Can a Java class impersonate another Windows user?

I've a Java servlet class which is accessing a NetApp folder for files. The class is running on Tomcat 6.0 on Windows 2003 and uses Active Directory authenication (LDAP) to authenticate the webapp users. Tomcat (and thus also the webapp with the Java servlet classes) itself is running with account xyz, which is a service account. The Ne...

Pass variables from servlet to jsp

How can I pass variable from servlet to jsp? setAttribute and getAttribute didn't work for me :-( ...

What's recommended for authentication check? Servlet Filters or Form based authentication?

We are working implementing Single Sign On(SSO) using pingfederate. The basic implementation uses a login token sent via browser cookies for checking user authentication. What's the recommended way of doing the authentication check? Should I use a login filter or configure form-based authentication? ...

Tomcat server file download problem with encoding

I am sending a response using the following code: response.setHeader("Content-Encoding","UTF-8"); response.setContentType("text/plain charset=UTF-8"); PrintWriter outWriter = response.getWriter(); String returnString = new String(dataController.translateFile(documentBuffer).getBytes(), "UTF-8"); outWriter.print(returnString); When I r...

Testing intercommunicating servlets in JUnit

I was wondering how I could test two servlets that need to communicate with one another in JUnit. I'm using com.meterware.servletunit.ServletRunner to run each servlet, but for some reason they cannot communicate with one another. For example, servlet A needs to open up a URLConnection to servlet B, but when run in JUnit with both se...

Calling a Servlet from a JSP page using jQuery Ajax

I know there are quite a few related question here but none that actually relate to my question have an answer attached. Or at least an accepted answer. Happy to be wrong in this if someone can point me to the question. Also please retag if I've miss-tagged. My question, as the title says is that I want to call a Servlet from my JSP ...

How can i deploy Session Bean on another computer with Client JSP/Servlet

Hello Everybody i'm new in EJB3, i know how to deploy Session Bean (Stateless or stateful) on Glassfish server in one computer. My question is: how can i deploy session bean on Computer A and Deploy Servlet or JSP on Computer B? It mean Computer A have Session Bean Source and Computer B have Servlet or JSP source. if use 1 computer i ca...

How to initialize JEE 5 JAX-WS 2.0 Web Service with Parameters

Application configuration: Web application using java first method of creating JAX-WS 2.0 Web Services with annotations. WebLogic 10.3 My Requirements The requirements I have are to deploy a single web service implementation class, but change logic based on the URL from which the service was accessed. Question: I'm assuming a goo...

How do I replace ServletException after Tomcat 6.0?

Hey, guys. Newbie to tomcat/apache, java returner here. I'm trying to run th step-by-step example here (http://static.springsource.org/docs/Spring-MVC-step-by-step/part1.html). Unfortunately, I keep getting an error that says "The project was not built since its build path is incomplete. Cannot find the class file for javax.servlet...

Sun Java System App Server on Netbeans 6.9.1

In adding a server on Netbeans 6.9.1 when SJSAPS 8.2 is chosen I receive an error. Something to do with the location. Can I use SJSAPS in Netbeans 6.9.1? Or have to use Java EE 5 which comes with Glassfish v2. 6.9.1 also has a choice for Glassfish v2.x but I get the same error. Reading Sun's tutorial on "Servlet Technology." See lin...

Servlet handling POST request as GET

I wrote a servlet to handle both POST and GET requests, based on the example given here. I have the following: A html with the following form: form method="POST" action="servlet/RequestType" and input: input type="submit" value="POST" The following doGet and doPost methods: public void doGet(HttpServletRequest req, HttpServletRes...

Accessing servlets in Websphere

I have written a simple test servlet and deployed it on websphere applications. When i try to access the servlet it gives me following error Error 404: SRVE0190E: I have checked all the basic things like web.xml entry, servlet syntax etc. Everything is correct.. The same servlet when deployed on Tomcat is working fine. I also checke...

when i execute my servlet i have this error:Error 324 (net::ERR_EMPTY_RESPONSE): Unknown error.

i have a servlet witch get a paramater id .the id can be from 1 to 5 for each id the code is some but one methode is different in the query from the database.when i execute the servlet in local .its ok no problem but when i put it in server of my company where i do my internship,only for the id=5 i have this error: This webpage is not av...

how to reload jsp page on every request?

i have a jsp page with jdbc connection and on first load it shows the data accurately but after that it shows empty tables i think 2nd time it loads from memory not from server what is problem behind i don't know ok here are the details i have a servlet that maintains the session for a user that log in and then after creating the s...

Static Variables Behaviour in a Java Servlet

Hi, I am developing a java servlet that while running, starts different objects methods in new threads. Those threads should access a variable that describes the specific servlet instance, say jobId. For this reason, i declared the jobId variable as static. The servlet constructor is calculating this value for each servlet instance (call...