servlet-3.0

Lead by several examples and questions answered here ( mainly http://www.javaworld.com/javaworld/jw-02-2009/jw-02-servlet3.html?page=3 ), I want to have server sending the response multiple times to a client without completing the request. When request times out, I create another one and so on. I want to avoid long polling, since I have to recreate request every time I get the response. (and that quite isn't what async capabilities of servlet 3.0 are aiming at). I have this on server side: @WebServlet(urlPatterns = {"/home"}, name = "async", asyncSupported = true) public class CometServlet

WebApplicationInitializer provides a way to programmatically represent a good portion of a standard web.xml file - the servlets, filters, listeners. However I have not been able to figure out a good way to represent these elements(session-timeout, error-page) using WebApplicationInitializer, is it necessary to still maintain a web.xml for these elements? <session-config> <session-timeout>30</session-timeout> </session-config> <error-page> <exception-type>java.lang.Exception</exception-type> <location>/uncaughtException</location> </error-page> <error-page> <error-code>404</error-code>

This question already has an answer here: Prevent user from seeing previously visited secured page after logout 5 answers I have a servlet and a HTML page. How can I prevent the user from hitting the back button of the browser after logout? I have read the same question in stackoverflow , but the answers are using browser history disable with java script or using page--no cache in http headers. How can we implement it using servlets that prevent the go back action, the http-header no cache is useless as Firefox says the page is expired when it is refreshed two times again the secure page is

I'm trying to create a small servlet that uploads images and is able to retrieve them in a different page as a slideshow. I'm able to save them outside the WebApp folder, but while retrieving them I need them to be a part of a JSP which will have other content, apart from the images. Currently, I'm using BufferedImage and ImageIO classes to stream the images one at a time. BufferedImage image = ImageIO.read(new File("D:\\"+file.getName())); ImageIO.write(image, "jpg", response.getOutputStream()); The file is checked to be a JPEG file type earlier in the code. You need to understand how HTTP

How do I add in multipart configuration to a spring mvc app which uses controllers with methods annotated with RequestMapping? Background: I want to enable csrf protection and so have added the security:csrf tag in my spring config. I have a controller class with a method annotated with RequestMapping used for uploading files. I also followed the caveat instructions around multipart whereby I added the multipart filter above the security filter. When I tried to upload a file after adding the csrf tag I got an exception around a missing getParts() method. A quick google highlighted this was due

I have a web application running on a Servlet 3.0 container (Jetty 9.0.4) using JSF 2.2 (Mojorra 2.1.3) & CDI 1.1 (Weld 2.0.3). No full-fledged application server is used. In this application I also have a JAX-RS 2.0 (Jersey 2.2) resource class serving REST requests. I have integrated JAXB binding and also JSON marshalling (Jackson 2.2). I use Maven 3.0.5 for the build management. These are the relevant parts of my project setup: Maven pom.xml: ... <dependencies> <!-- Servlet 3.0 API --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0<

This problem is relatively well discussed in several blog posts and SO questions. Nevertheless, I wasn't able to find one specifically addressing the problem with java configuration. I'm suspecting that I'm doing something wrong in my java configuration files, since I've found some posts indicating that the problem can be resolved by removing the debug XML tag ( https://jira.springsource.org/browse/SEC-1885 ). I'm using 3.2.0.RELEASE of spring security, and 3.2.6.RELEASE of spring framework. Below the main files used in the spring security/mvc configuration and the custom