HSSFRow title = sheet.createRow(0);
HSSFCell titleCell1 = title.createCell(0);
titleCell1.setCellValue(this.filter);
HSSFCell titleCell2 = title.createCell(1);
titleCell2.setCellValue("");
HSSFCell titleCell3 = title.createCell(2);
titleCell3.setCellValue("");
HSSFCell titleCell4 = title.createCell(3);
titleCell4.setCellValue("");
HSSFCell titleCell5 = title.createCell(4);
titleCell5.setCellValue("");