Question

我正在阅读Excel表格。最初（直到rowid 30）我得到公式单元格的正确（CELL_TYPE_STRING）结果类型，但是从行ID 31开始，我收到了错误的（CELL_TYPE_NUMERIC）结果类型。

请参阅下面的日志：我使用====作为分隔符来分隔每行的日志。列号1是要聚焦的点，其中对于rowID = 30，我得到type = String而对于rowId = 31，我得到type = Numeric，但是每行的第1列是string类型，因此我不知道如何获取字符串值

请参阅Excel工作表内容以获取与日志对应的行。

        switch (cell.getCellType()) {

        case Cell.CELL_TYPE_FORMULA:
            cellWrapper.setCellValueFarmula(true);
            switch (cell.getCachedFormulaResultType()) {
            case Cell.CELL_TYPE_NUMERIC:
                cellValue = String.valueOf(cell.getNumericCellValue());
                logged.append("CELL_TYPE_FORMULA->CELL_TYPE_NUMERIC");
                break;
            case Cell.CELL_TYPE_STRING:
                cellValue = "" + cell.getRichStringCellValue();
                logged.append("CELL_TYPE_FORMULA->CELL_TYPE_STRING");
                break;
            case Cell.CELL_TYPE_BOOLEAN:
                cellValue = "" + cell.getBooleanCellValue();
                logged.append("CELL_TYPE_FORMULA->CELL_TYPE_BOOLEAN");
                break;
            case Cell.CELL_TYPE_ERROR:
                cellValue = "error! ";
                logged.append("CELL_TYPE_FORMULA->CELL_TYPE_ERROR");
                break;

            default:
                cellValue = null;
                logged.append("case not captured" + " type fetched = " + cell.getCellType());
                break;
            }
            break;
        case Cell.CELL_TYPE_BLANK:
            logged.append("CELL_TYPE_BLANK");
            cellValue = null;
            break;
        case Cell.CELL_TYPE_ERROR:
            cellValue = "error!";
            logged.append("CELL_TYPE_ERROR");
            break;
... some for cases below

Excel内容

   Col1                                                    Col2                                   Col3                 Col4
[ACTIVE] - 21 - 1A - CALDRA - 305     .  {Chitra Subramaniam - 9538924280}, {deepakag@yahoo.com}    12               Rs. 1,000
[ACTIVE] - 22 - 1A - CALDRA - 306     .  {Parasad Parigi - 9538924280}, {deepakag@yahoo.com}        25               Rs. 1,000
[SEALED] - 23 - 1A - CALDRA - 401     .  {Vivek - 9538924280}, {deepakag@yahoo.com}                 <empty cell>     Rs. 1,075

日志

==================================================================================================
Cell @ row=30col=1   type = CELL_TYPE_FORMULA->CELL_TYPE_STRING  Value=[ACTIVE] - 21 - 1A - CALDRA - 305     .
Cell @ row=30col=2   type = CELL_TYPE_FORMULA->CELL_TYPE_STRING  Value= {Chitra Subramaniam - 9538924280}, {deepakag@yahoo.com}
Cell @ row=30col=3   type = CELL_TYPE_NUMERIC    Value=12.0
Cell @ row=30col=4   type = CELL_TYPE_STRING     Value=Rs. 1,000
==================================================================================================
Cell @ row=31col=1   type = CELL_TYPE_FORMULA->CELL_TYPE_NUMERIC     Value=0.0
Cell @ row=31col=2   type = CELL_TYPE_FORMULA->CELL_TYPE_STRING  Value= {Parasad Parigi - 9538924280}, {deepakag@yahoo.com}
Cell @ row=31col=3   type = CELL_TYPE_NUMERIC    Value=25.0
Cell @ row=31col=4   type = CELL_TYPE_STRING     Value=Rs. 1,000
==================================================================================================
Cell @ row=32col=1   type = CELL_TYPE_FORMULA->CELL_TYPE_NUMERIC     Value=0.0
Cell @ row=32col=2   type = CELL_TYPE_FORMULA->CELL_TYPE_STRING  Value= {Vivek - 9538924280}, {deepakag@yahoo.com}
Cell @ row=32col=3   type = CELL_TYPE_BLANK  Value=null
Cell @ row=32col=4   type = CELL_TYPE_STRING     Value=Rs. 1,075
==================================================================================================

那么即使值是数字，我怎样才能检索单元格结果值？是否存在一种通用方法，无论字符串的类型是什么，都会以字符串形式给出结果值？

Answer 1

Excel中的单元格可以有许多不同的类型。 POI会以Excel存储它为单位返回单元格值，这可能不是Excel显示它的方式。（Excel可能有点神秘！）。

如果您希望POI尝试将单元格格式设置为与Excel中的格式相同，则无论类型如何，您要查找的类都是DataFormatter。您的代码将类似于：

 DataFormatter fmt = new DataFormatter();
 for (Row r : sheet) {
    for (Cell c : r) {
       CellReference cr = new CellRefence(c);
       System.out.println("Cell " + cr.formatAsString() + " is " + 
                          fmt.formatCellValue(c) );
    }
 }

Apache POI的getCachedFormulaResultType（）返回不正确的类型

1 个答案: