Bug 211081 log4j not working with preview
I am using log4j in the scripting Database source. I place my log4j-1.2.15.jar file in the folder C:\eclipse\plugins\org.eclipse.birt. report.viewer_2.2.1.r22x_v20070920\ birt\WEB-INF\lib However when I try to preview I get an error Http Status 500. When I check the log files I see the following exceptions java.lang.NoClassDefFoundError: org/apache/log4j/Category
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
String sessionId = request.getSession( ).getId( );
		if ( sessionId != null )
			tempFolder = tempFolder + File.separator + sessionId;
		return tempFolder;
	}
	/**
	 * Clear the temp files when session is expired
	 * 
	 * @param sessionId
	 */
	public static void clearSessionFiles( String sessionId )
	{
		if ( sessionId == null )
			return;
		
		String tempFolder = documentFolder + File.separator
				+ ( PREFIX_SUB_DOC_FOLDER + sessionId );
		File file = new File( tempFolder );
		deleteDir( file );
		
		tempFolder = imageFolder + File.separator + sessionId;
		file = new File( tempFolder );
		deleteDir( file );
	}
	/**
	 * Returns if fit to page
	 * 
	 * @param request
	 * @return
	 */