Question

之前我使用Apache POI 2.5.1使用.xls导出HSSFWorkbook文件。使用更新的Apache POI到3.13我使用.xlsx导出SXSSFWorkbook文件，但导出已损坏的文件。

MS Excel无法以文件格式或扩展程序无效错误打开文件。

请注意，我只在WebLogic服务器上遇到此问题，它适用于JBoss。

任何人都可以帮助我在这里做错了吗？

代码：

    List<JRField> fields = ds.getFields();
    SXSSFWorkbook wb = new SXSSFWorkbook();
    SXSSFSheet sheet = wb.createSheet("Sheet1");

    try {
        CellStyle cellStyle         = wb.createCellStyle();
        CellStyle cellStyleColName  = wb.createCellStyle();
        CellStyle cellStyleTitle    = wb.createCellStyle();

        Font boldFont = wb.createFont();
        boldFont.setFontHeightInPoints((short)16);
        boldFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

        // Cell Style for body
        cellStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("($#,##0_);[Red]($#,##0)"));
        cellStyle.setWrapText(true);

        // Cell Style for Column Names
        cellStyleColName.setDataFormat(HSSFDataFormat.getBuiltinFormat("($#,##0_);[Red]($#,##0)"));
        cellStyleColName.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        cellStyleColName.setBorderTop(HSSFCellStyle.BORDER_MEDIUM); // single line border
        cellStyleColName.setBorderBottom(HSSFCellStyle.BORDER_MEDIUM); // single line border

        // Cell Style for Title
        cellStyleTitle.setDataFormat(HSSFDataFormat.getBuiltinFormat("($#,##0_);[Red]($#,##0)"));
        cellStyleTitle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        cellStyleTitle.setFont(boldFont);

        // Creating Title Row
        Row row1 = sheet.createRow((short) 0);

        // Creating the Title line
        Cell cell1 = row1.createCell((short) 0);
        cell1.setCellValue("Demo Title");
        cell1.setCellStyle(cellStyleTitle);

        // Title Region
        CellRangeAddress regionTitle = new CellRangeAddress(  (short) 0,       // From Row
                (short) 0,                                    // From Col
                (short) 0,                                    // To Row
                (short) (this.displayCols.size()-1)           // To Col

        );
        sheet.addMergedRegion(regionTitle);

        // Column Name Row
        int j =0;
        Row row2 = sheet.createRow((short) 1);
        for (ReportColumn col : this.displayCols)
        {
            Cell cell2 = row2.createCell((short) j++);
            cell2.setCellValue(col.getDisplayName());
            cell2.setCellStyle(cellStyleColName);
        }

        int i =2;
        while (ds.next()) {
            Row rows = sheet.createRow((short) 0 + i);
            int k = 0;
            for (JRField field : fields) {
                String fieldAsString = (ds.getFieldValue(field) != null ? ds.getFieldValue(field).toString():null);
                Cell cell = rows.createCell((short) k++);
                cell.setCellStyle(cellStyle);
                cell.setCellValue(fieldAsString);
            }
            i++;
            if (i > RECORD_LIMIT_FROM_POI){
                log.info("Row limit from poi reached #1048576 and exported data is truncated.");
                break;
            }
        }

        wb.write(os);
    }
    catch (Exception e) {
        log.error("error in createXlsFile method", e);
    }

尝试失败：

更新了来自application/vnd.ms-excel的响应标头中的mime类型到vnd.openxmlformats-officedocument.spreadsheetml.sheet
在WebLogic的自定义mime映射文件中添加了xlsx=vnd.openxmlformats-officedocument.spreadsheetml.sheet

Answer 1

这可能会耗费更多资源，但您尝试过：

XSSFWorkbook wb = new SXSSFWorkbook();
XSSFSheet sheet = wb.createSheet("Sheet1");

而不是SXSSF。

这里有各种类型的讨论：HSSFWorkbook vs XSSFWorkbook and the advantages/disadvantages of XSSFWorkbook and SXSSFWorkbook?

在weblogic上使用apache poi 3.13导出xlsx：文件格式或扩展名无效

1 个答案: