1. poi的“
HSSFCellStyle cellStyle = wb.createCellStyle(); cellStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("m/d/yy h:mm")); cell = row.createCell((short)1); cell.setCellValue(new Date()); cell.setCellStyle(cellStyle);
该方法只能创建HSSFDataFormat方法中内建的几种日期格式,而不是真正的完全自定义格式,如果只需要内建的格式,请参考源码。
2. 真正的日期自定义格式,应该参考“
HSSFWorkbook wb = new HSSFWorkbook(); HSSFSheet sheet = wb.createSheet("format sheet"); HSSFDataFormat format = wb.createDataFormat(); HSSFRow row = sheet.createRow(0); HSSFCell cell = row.createCell(0); HSSFCellStyle style = wb.createCellStyle(); style.setDataFormat(format.getFormat"yyyy年MM月dd日")); cell.setCellValue(new Date()); cell.setCellStyle(style);