XSSFWorkbook wb = new XSSFWorkbook();
CellStyle style = wb.createCellStyle();
style.setBorderRight(CellStyle.BORDER_THIN); // 设置边框线 上下左右
style.setRightBorderColor(IndexedColors.GREY_80_PERCENT.getIndex());
style.setBorderLeft(CellStyle.BORDER_THIN);
style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderTop(CellStyle.BORDER_THIN);
style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderBottom(CellStyle.BORDER_THIN);
style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
//自动换行
style.setWrapText(true);
style.setAlignment(CellStyle.ALIGN_CENTER);// 设置居中
style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);// 设置居中
style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
Font font = wb.createFont();
font.setColor(IndexedColors.RED.index);//自体颜色
style.setFont(font);
return style;