Trying to build a Struts 2 app which directs the user to a page (Display.jsp) that shows the color of a user defined RGB color configuration. I get the example from the Struts 2 Tutorial by Budi Karniawan. When I manually cut and paste the source code and build the app manually as an NB Web application, it ru…
Tag: jsp
Redirect to an external URL from controller action in Spring MVC
I have noticed the following code is redirecting the User to a URL inside the project, whereas, the following is redirecting properly as intended, but requires http:// or https:// I want the redirect to always redirect to the URL specified, whether it has a valid protocol in it or not and do not want to redir…
JSP input comes null to servlet
I’m trying to pass parameter to jsp to servlet. And my code is : Server side : JSP side : When i run it on localhost kullanici variable comes null. Any solution ? EDİT : Answer I think you mean that you want to go FROM a jsp TO a servlet. If that’s the case, look the action attribute: If
if else statement not working jsp
Is there anything wrong with my code? My if else statement is not working. Answer You need to use the .equals method to test for string equality. Try this instead:
Identifying each field in Multiple File upload
When trying to upload multiple files with Struts 2 using ArrayList, how to identify each field? For example, if I have two file fields, File1 and File2 and on the client side, I choose to upload only File2, Struts 2 only creates one element in the list and I am not able to correctly map File1 as empty and Fil…
Storing integer as attribute in jsp
I want to pass an Integer value as an attribute in JSP. But when i try an error is returned. Could you tell me a method to store Integer numbers as attributes in JSP? I am getting a casting error saying parseInt() is not suited for handling objects. Answer request.getAttribute returns an Object. you need to c…
Pass Hidden parameters using response.sendRedirect()
How would I pass hidden parameters? I want to call a page (test.jsp) but also pass 2 hidden parameters like a post. Answer TheNewIdiot’s answer successfully explains the problem and the reason why you can’t send attributes in request through a redirect. Possible solutions: Using forwarding. This w…
NoSuchMethodError when using submitting form in Struts 2
I’m currently working through the tutorial found on the Apache Struts website. Currently, whenever I press submit on the form, or when I click the Bruce Philips hyperlink, I get a NoSuchMethodError. I’m not too sure what the issue is either and I believe I’ve included everything the tutorial…
Changing value of <c:set jstl tag
I am using the following expression on my jsp I have a condition inside a for each loop where I might want to change this variable to true. Is there a way to do this. I’ve looked everywhere but unable to find a solution. Answer Here is the sample code you are looking for:
How to access a request attribute set by a servlet in JSP?
I’m trying to retrieve attribute values set by a servlet in a JSP page, but I’ve only luck with parameters by ${param}. I’m not sure about what can I do different. Maybe its simple, but I couldn’t manage it yet. In the JSP I have been trying to retrieve the “attribValue”, b…