try {
Thread.currentThread().setContextClassLoader(tempLoader);
Response r = null;
if (exportType == null || "XLS".equals(exportType.toUpperCase())) {
r = ex.exportExcel(file, null, null);
mimeType = "application/vnd.ms-excel";
filename += ".xls";
} else if ("CSV".equals(exportType.toUpperCase())) {
r = ex.exportCsv(file, null, null);