Problem to open a csv- File after Project deployment

Vaadin 6 / 7 / 8 Framework Data Binding
1

Hello,

i´, a vaadin Newbie and this is my first Post.

I have a problem while I´m deploying a project to .war.

I just want to open a csv- file on desktop but the war appication doesn´ react.

When I run my application from eclipse the file opens on Desktop.

Does anyone know where I have to store my File to access it from a War?

Here is the code:

WebApplicationContext context = (WebApplicationContext) getApplication().getContext();
			    		
			    		File webinfFolder = new File ( context.getHttpSession().getServletContext().getRealPath("WEB-INF/Editor1.csv") );
			       		
			       		System.out.println(webinfFolder.getAbsolutePath());
			       		
			    	      File file= new File(webinfFolder.getAbsolutePath());
			   
			       try {
					Desktop.getDesktop().open(file);
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

Thanks in Advance

Jurij