创建工作表：

Workbook workbook = new XSSFWorkbook();

1.行背景色

CellStyle cellStyle = workbook.createCellStyle();
cellStyle.setFillForegroundColor(cellStyle.setFillForegroundColor(IndexedColors.RED.index);
cellStyle.setFillPattern(CellStyle.SOLID_FOREGROUND);

2.自定义背景色

XSSFCellStyle cellStyle = (XSSFCellStyle) workbook.createCellStyle();
cellStyle.setFillForegroundColor(new XSSFColor(new java.awt.Color(156, 195, 230)));
cellStyle.setFillPattern(CellStyle.SOLID_FOREGROUND);

3.单元格合并、加边框

以合并excel第一行为例，titlesCN是数据项表头(column1.......12)对应的字符串数组。我们要合并index=0的行，即上图“月度生产统计表”所在的行。代码如下：

String reportTitle="报表标题"
Row rowReportTitle = sheet.createRow(0);
rowReportTitle.setHeight((short) 425);
for (int i = 0; i < titlesCN.length; i++) {
     Cell titleCell = rowReportTitle.createCell(i, Cell.CELL_TYPE_STRING);
     setReportStyle(workbook, titleCell, CellStyle.ALIGN_CENTER, CellStyle.VERTICAL_CENTER,
                        HSSFFont.BOLDWEIGHT_BOLD, HSSFColor.BLACK.index, (short) 16, "宋体", "reportHead");
     }
CellRangeAddress titleRegion = new CellRangeAddress(0, 0, 0, titlesCN.length - 1);
sheet.addMergedRegion(titleRegion);
Cell titleCell = rowReportTitle.getCell(0);
titleCell.setCellValue(reportTitle);


 public static void setReportStyle(Workbook workbook, Cell cell, short zyjz, short sxjz, short bw, short color, short fh, String fontName) {
        XSSFCellStyle cellStyle = (XSSFCellStyle) workbook.createCellStyle();
        cellStyle.setAlignment(zyjz);//左右居中
        cellStyle.setVerticalAlignment(sxjz);//上下居中
        cellStyle.setBorderBottom(CellStyle.BORDER_THIN); // 下边框
        cellStyle.setBorderLeft(CellStyle.BORDER_THIN);// 左边框
        cellStyle.setBorderTop(CellStyle.BORDER_THIN);// 上边框
        cellStyle.setBorderRight(CellStyle.BORDER_THIN);// 右边框
        cellStyle.setFillForegroundColor(new XSSFColor(new java.awt.Color(156, 195, 230)));//设置背景色
        cellStyle.setFillPattern(CellStyle.SOLID_FOREGROUND);//填充模式
        Font font = workbook.createFont();
        font.setBoldweight(bw);
        font.setColor(color);
        font.setFontHeightInPoints(fh);
        font.setFontName(fontName);
        cellStyle.setFont(font);
        cell.setCellStyle(cellStyle);
    }

步骤说明：

（1）创建titlesCN相应的列，设置边框

（2）合并单元格

（3）设置单元格的值