在java apache poi中以zip格式在邮件中的.xlsx文件中弹出修复错误

Question

我使用apache poi 3.11生成.xlsx文件。之后我们被要求拉链并通过电子邮件发送。

但是我们尝试在电子邮件中打开文件，我们得到“我们在'FileName.xlsx'中发现了一些内容的问题。你想让我们尽可能多地恢复吗？如果你相信的话此工作簿的来源，单击是“弹出窗口。并恢复我们的数据。但我不明白为什么会出现这种错误。

我们甚至尝试使用fileOutputStream“Temp.xlsx”生成此代码，这次没有错误弹出窗口。但是当我们将工作簿写入byteoutputstream时。它给了我们这个错误。我们甚至将mimeType设置为“application / vnd.openxmlformats-officedocument.spreadsheetml.sheet” 我们附加了代码段和弹出窗口图像。

请进一步指导我们！

以下是代码：

@Override
    public ByteArrayOutputStream createWorkBookForEmailXSSF(ExtractionRequestBean extractionRequestBeans, ByteArrayOutputStream outputstream) throws FileNotFoundException, IOException {
        XSSFWorkbook xwb = new XSSFWorkbook();
        XSSFCellStyle headerStyle= SpreadSheetGenerator.settingHeaderStyle(xwb);
        SpreadSheetGenerator.setttingNumberStyle(xwb);
        SpreadSheetGenerator.setttingNumberDecimalStyle(xwb);
        SpreadSheetGenerator.setttingDateStyle(xwb);
        XSSFSheet sheet = xwb.createSheet(extractionRequestBeans.getFileName());
        SpreadSheetGenerator.createHeader(sheet, extractionRequestBeans.getHeaderValues(), headerStyle);
        SpreadSheetGenerator.createRows(extractionRequestBeans, sheet, xwb);
        SpreadSheetGenerator.settingAutosizeColumns(sheet, extractionRequestBeans.getHeaderValues());
        xwb.write(outputstream);
        outputstream.write(xwb.toString().getBytes());
        outputstream.close();
        return outputstream;
    }
}




public static XSSFCellStyle settingHeaderStyle(XSSFWorkbook xwb) {
        XSSFCellStyle style = xwb.createCellStyle();
        XSSFFont font = xwb.createFont();
        //font.setBoldweight(Font.BOLDWEIGHT_BOLD);
        style.setFillForegroundColor(IndexedColors.GREY_40_PERCENT.getIndex());
        //style.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
        style.setFont(font);
        return style;
}

public static XSSFCellStyle setttingNumberStyle(XSSFWorkbook xwb) {
        XSSFCellStyle style = xwb.createCellStyle();
        DataFormat format = xwb.createDataFormat();
        style.setDataFormat(format.getFormat("0"));
        return style;
}

public static XSSFCellStyle setttingNumberDecimalStyle(XSSFWorkbook xwb) {
        XSSFCellStyle style = xwb.createCellStyle();
        DataFormat format = xwb.createDataFormat();
        style.setDataFormat(format.getFormat("0.00"));
        return style;
}

public static XSSFCellStyle setttingDateStyle(XSSFWorkbook xwb) {
        XSSFCellStyle style = xwb.createCellStyle();
        DataFormat format = xwb.createDataFormat();
        style.setDataFormat(format.getFormat("m/d/yy h:mm"));
        return style;
}
public static void createHeader(XSSFSheet sheet, List<String> headerValues, XSSFCellStyle style) {
        addHeaderRow(sheet, 0, headerValues, style);
}

private static void addHeaderRow(XSSFSheet sheet, int i, List<String> headerValues, XSSFCellStyle style) {
        logger.info("Start : [SpreadSheetGenerator - createHeaderRow - Start Generating Header]");
        XSSFRow rowhead = sheet.createRow((int) 0);
        int cellIndex = 0;
        for (String headerLabel : headerValues) {
                    addHeaderCell(rowhead, cellIndex, headerLabel, style);
                    cellIndex++;
        }
        logger.info("End : [SpreadSheetGenerator - createHeaderRow - Start Generating Header]");
}

private static void addHeaderCell(XSSFRow rowhead, int cellIndex, String headerLabel, XSSFCellStyle style) {
        if (headerLabel != null && !headerLabel.equalsIgnoreCase("")) {
                    rowhead.createCell(cellIndex).setCellValue(headerLabel.toString());
        } else {
                    rowhead.createCell(cellIndex).setCellValue("");
        }
        rowhead.getCell(cellIndex).setCellStyle(style);
}

public static void settingAutosizeColumns(XSSFSheet sheet, List<String> headerValues) {
        for (int autoSizeIndex = 0; autoSizeIndex < headerValues.size(); autoSizeIndex++) {
                    sheet.autoSizeColumn(autoSizeIndex);
        }
}

public static void createRows(ExtractionRequestBean extractionRequestBean, XSSFSheet sheet, XSSFWorkbook hwb) {
        logger.info("Start : [SpreadSheetGenerator - createRows - Start Generating Excel Rows ]");
        int rowIndex = 1;
        for (Object[] obj : extractionRequestBean.getDatas()) {
             addRow(sheet, rowIndex, obj, extractionRequestBean.getCellStyleMap(), hwb);
             rowIndex++;
        }
        logger.info("End : [SpreadSheetGenerator - createRows - End Generating Excel Rows]");
}

private static void addRow(XSSFSheet sheet, int rowIndex, Object[] obj, Map<Integer, Integer> cellStyleMap, XSSFWorkbook hwb) {
        XSSFRow row = sheet.createRow((int) rowIndex);
        int cellIndex = 0;
        addCell(obj, row, cellIndex, cellStyleMap, hwb);
}

    @SuppressWarnings("deprecation")
    private static void addCell(Object[] obj, XSSFRow row, int cellIndex, Map<Integer, Integer> cellStyleMap, XSSFWorkbook hwb) {
        for (Object object : obj) {
            if (cellStyleMap.get(cellIndex) == HSSFCellStyleEnum.ONLYSTRING.getStyleCode()) {
                row.createCell(cellIndex).setCellValue(object != null ? object.toString() : "");
            } else if (cellStyleMap.get(cellIndex) == HSSFCellStyleEnum.NUMERICWITHDECIMAL.getStyleCode()) {
                row.createCell(cellIndex).setCellValue(object != null ? Double.valueOf(object.toString()) : 0d);
            } else if (cellStyleMap.get(cellIndex) == HSSFCellStyleEnum.NUMERICWITHOUTDECIMAL.getStyleCode()) {
                row.createCell(cellIndex).setCellValue(object != null ? Double.valueOf(object.toString()) : 0d);
            } else if (cellStyleMap.get(cellIndex) == HSSFCellStyleEnum.ONLYDATE.getStyleCode()) {
                row.createCell(cellIndex).setCellValue(object != null ? DateUtil.formatDateOnly(new Date(object.toString()))  : "");
            }
            cellIndex++;
        }
    }