Bug 175776 [smoke]Can not export data in Web viewer[02]
Description: No data is exported after export data from Web viewer Build number: 2.2.0.v20070228-0630 Steps to reproduce: 1, Drag a dataset into layout 2, Preview the report in Web Viewer 3, Click Export Data 4, Select the columns and click OK button 5, Open the exportdata.csv Expected result: The data of column are exported in the csv file Actual result: <html><head><title>Error</title><body><font color="red">java.lang.NullPointerException</font></body></html> in the csv file Error log:
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
URL url = request.getSession( ).getServletContext( )
						.getResource( designFile );
				if ( url != null )
					return url.openConnection( ).getLastModified( );
			}
			catch ( Exception e )
			{
			}
		}
		return -1L;
	}
	/**
	 * Get report service instance.
	 */
	protected IViewerReportService getReportService( )
	{
		return BirtReportServiceFactory.getReportService( );
	}
	/**
	 * Clear our resources.
	 * 
	 * @exception Throwable
	 * @return
	 */
	protected void __finalize( ) throws Throwable
	{
	}
	/**
	 * get parsed parameters with default value.
	 *