Question

我的应用程序中有使用Apache poi库的代码，但问题是他正在读取我不想要的单元格。因为我现在想要如何仅从第33行开始读取单元格。我该怎么做？

File file = new File(inFileName);
            Workbook workBook = WorkbookFactory.create(file);
            Sheet sheet  = workBook.getSheetAt(0);


            Iterator<Row> rowIter = sheet.rowIterator();
            while(rowIter.hasNext()){

                Row myRow =rowIter.next();


                Cell cell1 = myRow.getCell(0);
                Cell cell2 = myRow.getCell(1);
                ...


                Iterator<Cell> cellIter = myRow.cellIterator();
                while(cellIter.hasNext()){
                    Cell myCell = cellIter.next();

                }

                //bd.addAnimalls(cell1.toString(),cell2.toString());

                Toast.makeText(getApplicationContext(), "on inserting", Toast.LENGTH_SHORT).show();



            }

Answer 1

您可以使用sheet.getPhysicalNymberOfRows()确定物理行的总数，并将其用作上限索引。然后，使用基于索引的行sheet.rowIterator()：

，而不是sheet.createRow(index)

for (int i = 33; i < sheet.getPhysicalNymberOfRows(); i ++)
{
    Row r = sheet.createRow(i);
    ....
}

Answer 2

the Apache POI documentation on iterating over rows and cells中介绍了这一点。非常值得阅读文档！

要从Excel第33行开始迭代，即POI第32行（POI行为0），最多为第1400行（作为示例），您需要执行以下操作：

int rowStart = 33-1; // POI rows are 0 based
int rowEnd = Math.min(1400, sheet.getLastRowNum());
final int MY_MINIMUM_COLUMN_COUNT = 10; // Minimum number of columns to consider

for (int rowNum = rowStart; rowNum < rowEnd; rowNum++) {
   Row r = sheet.getRow(rowNum);
   if (r == null) {
      // This whole row is empty
      // Handle it as needed
      continue;
   }

   int lastColumn = Math.max(r.getLastCellNum(), MY_MINIMUM_COLUMN_COUNT);

   for (int cn = 0; cn < lastColumn; cn++) {
      Cell c = r.getCell(cn, Row.RETURN_BLANK_AS_NULL);
      if (c == null) {
         // The spreadsheet is empty in this cell
      } else {
         // Do something useful with the cell's contents
      }
   }
}

如何在Android中使用Apache poi读取excel文件时跳过单元格？

2 个答案: