POI設置前景色在if語句中不起作用

Question

我正在做一些代碼，將兩張紙進行比較，並輸出一個文件，其中匹配的單元格為綠色，其他單元格為紅色。

有問題的部分（請參閱最后的完整代碼）

CellStyle style = cellOutputFile.getCellStyle();

if (isCellContentEqual(cellComparisonFile1, cellComparisonFile2) == true)
{
    style.setFillForegroundColor(IndexedColors.GREEN.getIndex());
}
else
{
    style.setFillForegroundColor(IndexedColors.RED.getIndex());
}

style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
cellOutputFile.setCellStyle(style);

問題

該代碼始終將所有單元格顯示為綠色，即使在調試時觸發else語句並將樣式設置為具有紅色背景。

在此先感謝您的幫助！

完整代碼

    for (int i = 0; i < workbookComparisonFile1.getNumberOfSheets(); i++)
    {
        sheetComparisonFile1 = workbookComparisonFile1.getSheetAt(i);
        sheetComparisonFile2 = workbookComparisonFile2.getSheet(sheetComparisonFile1.getSheetName());
        sheetOutputFile = workbookOutputFile.getSheet(sheetComparisonFile1.getSheetName());

        System.out.println(sheetComparisonFile1.getLastRowNum());

        if (sheetComparisonFile2 != null)
        {
            for (int j = 0; j < sheetComparisonFile1.getLastRowNum(); j++)
            {
                Row rowComparisonFile1 = sheetComparisonFile1.getRow(j);
                Row rowComparisonFile2 = sheetComparisonFile2.getRow(j);
                Row rowOutputFile = sheetOutputFile.getRow(j);

                if ((rowComparisonFile1 != null && rowComparisonFile2 != null)
                        && (rowComparisonFile1.getLastCellNum() == rowComparisonFile2.getLastCellNum()))
                {
                    for (int k = 0; k < rowComparisonFile1.getLastCellNum(); k++)
                    {
                        Cell cellComparisonFile1 = rowComparisonFile1.getCell(k);
                        Cell cellComparisonFile2 = rowComparisonFile2.getCell(k);
                        Cell cellOutputFile = rowOutputFile.getCell(k);

                        if (cellComparisonFile1 != null && cellComparisonFile2 != null)
                        {
                            CellStyle style = cellOutputFile.getCellStyle();

                            if (isCellContentEqual(cellComparisonFile1, cellComparisonFile2) == true)
                            {
                                style.setFillForegroundColor(IndexedColors.GREEN.getIndex());
                            }
                            else
                            {
                                style.setFillForegroundColor(IndexedColors.RED.getIndex());
                            }

                            style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
                            cellOutputFile.setCellStyle(style);
                        }
                    }
                }
            }
        }
    }

public boolean isCellContentEqual(Cell cell1, Cell cell2)
{
    if (getCellContents(cell1).equals(getCellContents(cell2)) == false)
    {
        System.out.println("Sheet: " + cell1.getRow().getSheet().getSheetName() +
                " Cell1: " + cell1.getRow().getRowNum() + "-" + cell1.getColumnIndex() + " "
                + getCellContents(cell1).equals(getCellContents(cell2)));
    }
    return getCellContents(cell1).equals(getCellContents(cell2));
}

public String getCellContents(Cell cell)
{
    DataFormatter df = new DataFormatter();

    return df.formatCellValue(cell);
}

Answer 1

樣式是在工作簿級別而不是單元級別創建的。 請嘗試以下代碼，但是如果工作簿樣式表已滿，則可能會失敗。 修改內部循環的if / else邏輯，如下所示：

if (isCellContentEqual(cellComparisonFile1, cellComparisonFile2) == true)
{
    CellStyle style = workbook.createCellStyle();
    style.cloneStyleFrom(cellOutputFile.getCellStyle());
    style.setFillForegroundColor(IndexedColors.GREEN.getIndex());
    style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
    cellOutputFile.setCellStyle(style);
}
else
{
    CellStyle style = workbook.createCellStyle();
    style.cloneStyleFrom(cellOutputFile.getCellStyle());
    style.setFillForegroundColor(IndexedColors.RED.getIndex());
    style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
    cellOutputFile.setCellStyle(style);
}

編輯代碼示例已更新，可以在更改填充前景色和填充圖案之前復制現有樣式