错误“安装 JCE Unlimited Strength Jurisdiction Policy 文件”

Question

我在 Java 中为 Excel 使用 Apache POI 库。我需要用密码打开 xlsx 文件。为什么我有这个错误：“线程“主”org.apache.poi.EncryptedDocumentException 中的异常：导出限制到位 - 请安装 JCE 无限强度管辖策略文件”。我尝试安装此文件。但这并没有解决问题。

public static void ReadFromExcell(String file) throws IOException, GeneralSecurityException {
    String excelFilePath = "ServerList.xlsx";

    try {
        NPOIFSFileSystem fileSystem = new NPOIFSFileSystem(new File(excelFilePath));
        EncryptionInfo info = new EncryptionInfo(fileSystem);
        Decryptor decryptor = Decryptor.getInstance(info);

        if (!decryptor.verifyPassword("qwerty")) {
            System.out.println("Unable to process: document is encrypted.");
            return;
        }

        InputStream dataStream = decryptor.getDataStream(fileSystem);

        Workbook workbook = new XSSFWorkbook(dataStream);
        Sheet firstSheet = workbook.getSheetAt(0);
        Iterator<Row> iterator = firstSheet.iterator();

        while (iterator.hasNext()) {
            Row nextRow = iterator.next();
            Iterator<Cell> cellIterator = nextRow.cellIterator();

            while (cellIterator.hasNext()) {
                Cell cell = cellIterator.next();
                System.out.print(cell.getStringCellValue() + "\t");
            }
            System.out.println();
        }

        workbook.close();
        dataStream.close();
        fileSystem.close();
    } catch (GeneralSecurityException | IOException ex) {
        ex.printStackTrace();
    }
}

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Answer 1

我找到了解决问题的方法。我只替换了文件夹“jre”中的文件。还需要替换“jdk”文件夹中的文件。