POI导入时相关的EXCEL校验
一、单元格值非空校验
public static Boolean poiCellIsNull(Cell cell){if (Objects.isNull(cell)){return true;}else {if (cell.getCellType() == Cell.CELL_TYPE_BLANK){return true;}else if (cell.getCellType()==Cell.CELL_TYPE_STRING && cell.getStringCellValue().trim().isEmpty()){return true;}else {return false;}}}
二、获取EXCEL的 sheet && 单元格值类型是否合规校验
注-参数说明:
第一个是mutiple获取的文件字节流,第二个参数是文件类型(xls、xlsx),
第三个参数是 数据行数的开始索引,第四个参数是数据列数的开始索引,
第五个参数是不为空的列数字符串,例如:"1,2,3"==》表示第1列、第二列、第三列所属单元格的值不能为空
第六个参数是一个Map<Integer,Integer>类型,表示第几列单元格的值类型应该为xxx;枚举值是开始的前三行,分别是字符串类型(0),数字类型(1),日期类型(2)
例如:map.put(1,EXCEL_STRING); ===》表示第一列所属单元格的值应该为字符类型。
public static final Integer EXCEL_STRING = 0;public static final Integer EXCEL_NUMBER = 1;public static final Integer EXCEL_DATE = 2;public static Sheet getExcelDataSingleSheet(InputStream inputStream,String fileType,Integer rowStartIndex,Integer culStartIndex, String notNullStr,Map<Integer,Integer> classJudgeMap) throws IOException {Workbook workbook = null;if ("xls".equals(fileType)){workbook = new HSSFWorkbook(inputStream);}else if ("xlsx".equals(fileType)){workbook = new XSSFWorkbook(inputStream);}else {throw new IOException("文件类型不存在,请检查!");}//获取第一个sheet页Sheet sheet = workbook.getSheetAt(0);Row rowTitle = null;if (rowStartIndex==1){rowTitle = sheet.getRow(0);}int lastRowNum = sheet.getLastRowNum();for (int i = rowStartIndex; i <= lastRowNum; i++) {Row row = sheet.getRow(i);int lastCellNum = (int)row.getLastCellNum();for (int j = culStartIndex; j < lastCellNum; j++) {Cell cell = row.getCell(j);if (!notNullStr.isEmpty() && notNullStr.contains(String.valueOf(j)) && poiCellIsNull(cell)){StringBuffer stringBuffer = new StringBuffer();stringBuffer.append(String.format("第%d行,第%d列",i+1,j+1));if (rowStartIndex==1){String title = rowTitle.getCell(j).getStringCellValue();stringBuffer.append(String.format("【%s】",title));}stringBuffer.append("不准为空");throw new IOException(stringBuffer.toString());}StringBuffer errorMessage = new StringBuffer();try {if (classJudgeMap.containsKey(j)){switch (classJudgeMap.get(j)){case 0:errorMessage.append(String.format("第%d行,第%d列",i+1,j+1));errorMessage.append(String.format("【%s】",rowTitle.getCell(j).getStringCellValue()));errorMessage.append("应为字符类型");String stringCellValue = cell.getStringCellValue();break;case 1:errorMessage.append(String.format("第%d行,第%d列",i+1,j+1));errorMessage.append(String.format("【%s】",rowTitle.getCell(j).getStringCellValue()));errorMessage.append("应为数值类型");double numericCellValue = cell.getNumericCellValue();break;case 2:errorMessage.append(String.format("第%d行,第%d列",i+1,j+1));errorMessage.append(String.format("【%s】",rowTitle.getCell(j).getStringCellValue()));errorMessage.append("应为日期类型");Date dateCellValue = cell.getDateCellValue();break;default:break;}}}catch (IllegalStateException e){throw new IOException(errorMessage.toString());}catch (Exception e){e.printStackTrace();}}}return sheet;}