Execute code after Http resonse is sent
Hello, In a Java web application, is there any way to execute some code after and depending on the HttpServletResponse that has been sent to the client? Thanks in advance. ...
servlets
JSF not rendered when the url has a parameter
My problem is that when I for example do this <h:outputLink value="changeinfo.jsf"> Change name <f:param name="change" value="name"/> </h:outputLink> then the requested url is http://localhost:45054/WMC/user/changeinfo.jsf?change=name My url pattern for the faces servlet look like this <servlet-mapp...
How to make http get request from servlet to obtain image?
Hi! I would to get qr code from google chart API in my servlet (e.g. http://chart.apis.google.com/chart?chs=200x200&cht=qr&chld=M&chl=hello). What libraries (jars) do i need and how should i save the response (maybe to byte array?) ...
Servlet filter for browser caching?
Does anyone know how to go about coding a servlet filter that will set cache headers on a response for a given file/content type? I've got an app that serves up a lot of images, and I'd like to cut down on bandwidth for hosting it by having the browser cache the ones that don't change very often. Ideally, I'd like to be able to specify...
Can Servlets and JSP be deployed in OperaUnite?
I have used opera unite for deploying a static html/css/javascript website just for fun. I liked it because even though i don't have my own IP address (As i purchase net connection from an ISP...mebbe they use a NAT box...)Still it works awwsumm...without any problem. Please explain me how it works.. Also tell me whether i can do serve...
JSON Object Passing Help
Hi, A while back i was given the answer of using json to pass things from my application to java script. What i don't understand is how i actually pass the object to javascript i see that you have to use a .json file. And then what? I am able to convert my java objects to JSON objects but its passing that i can't get my head around. I am...
Servlets, JSP, Java?
I'm quite confused about some terms, I know Java for writting some "usual executable" programs. But I found that you can do servlets with java, and then heard of JSP. I'm not sure about the diference of servlets and JSP.. I dont get the idea, I think it's like PHP or something like that. Do you have any organized reference (or mind to ...
Logging to server log on deploying a war file
Hi, I am using Jboss. I need to log "War file deployed" to server log when a war file is copied to jboss/server/default/log directory.( this's not related to jboss but still ... ) I am aware of one way to do is, i.e to have a servlet and overload the init methods, to log onto server log. The requirement is -> as soon as a war file is ...
Content-Disposition to set the file name is ignored in IE6. Url from web.xml is diplayed as file name.
This is the code snippet I am trying to run. It is working fine locally, but if I try to run it in a unix server, the name of the down loaded file is displayed as the url mapped to the servlet in the web.xml instead of Report.xls. Please help me… response.reset(); response.setHeader("Expires", "0"); response.setHeader("Cache-Control","m...
Servlets, filters and threads in Tomcat
Hello, In the Tomcat container, do all the filters associated to a servlet and the servlet itself use the same thread? i.e, will doFilter() be run in the same thread as a servlet's service() method? Thanks in advance. ...
Seam - @In Identity identity not injecting & throws nullpointer exception
I am using Seam 2.0 and I have an instance variable inside my bean as @In Identity identity and when I use identity.getUserName() it throws NullPointerException. Can anyone tell me please what I am missing here additionally? Update: I have defined bean instance variable as below: @In Identity identity; Then in my bean construc...
Liquibase: How to execute Servlet Listener before EntityManager construction
I manage to issue a Liquibase Update as described in Liquibase Servlet Listener. <listener> <listener-class>liquibase.servlet.LiquibaseServletListener</listener-class> </listener> This effectively executes my Changelog. However, this happens after the setup of the EntityManager. Obviously, this is too late if I want my Persist...
URL mapping not working for servlet
I have what I think is a bizarre problem. With the same mapping to a servlet, one url works, and the other doesn't: <servlet-mapping> <servlet-name>UL_Admin</servlet-name> <url-pattern>/universal_listings_administration/*</url-pattern> </servlet-mapping> <servlet-mapping> <servlet-name>Create_New_Site</ser...
Accepting and parsing an uploaded file in a servlet
How do I get the file in a servlet running on Tomcat after using <input type="file"> in the JSP file? ...
Servlets should not start threads due to issues that may arise when clustering ....what issues ?
I know that we should not start threads in a servlet is that threads should be managed by the container. If the container is told to shutdown if there are threads that it does not know about hanging around it wont shutdown. I take care of this by making it a daemon thread... But other than the above "unable to shutdown" situation what o...
Bulk upload and Java servlets
What is the best way to upload a CSV file through a Java servlet on machine A that gets generated on Machine B? ...
JExcel Warning: Could not add cell at A257 because it exceeds the maximum column limit'
Hello! I was asked to add an average amount of data from my web-app (basically a List from a SQL) into a downloadable Excel file, so I did a servlet to generate the Excel. Problem is that jxl API doesn’t seem to like more than 256 rows, and my data is more than a thousand. Is there any way to go around this limitation? I would like t...
what is the difference between servlet and JSP? Please describe <% expr %> and <%! expr %> tags of JSP, when and where they get executed?
Possible Duplicates: What is the difference between <% %> and <%! %> in jsp When do you use a JSP and when a Servlet? what is the difference between servlet and JSP? Please describe <% expr %> and <%! expr %> tags of JSP, when and where they get executed? ...
problem in file upload while using Internet Explorer
I have developed a web application that uploads the file from client machine to server. it works well with Firefox and Apple Safari browser but when i try it with Internet Explorer,it sends only the boundary.I have set EncType as multipart/form-data.i am using servlet to receive the file. But file sent by IE does not received at servlet ...
Update SVG file using Ajax, by retrieving some information from a Java Servlet.
I have written a Java Servlet that retrieves a SVG image. The content type for this servlet is CONTENT_TYPE = "image/svg+xml"; This certain servlet is being integrated in a bigger (ADF11g) application as an inlineframe. The code should look familiar, if you are accustomed with JSP: <af:inlineFrame source="servlet?Filename=TestSVG1&...