将excel单元格内容作为Java InputStream读取

此代码将excel文件单元格的内容读入字符串

String theCell_00=rs.getCell(j,i).getContents();

是否有任何方法将excel单元格的内容读取为Java InputStream

我需要读取excel单元格内容并将内容传递给此函数的InputStream参数

public void encrypt(InputStream in, OutputStream out)
    {
        try
        {
            // Bytes written to out will be encrypted
            out = new CipherOutputStream(out, ecipher);

            // Read in the cleartext bytes and write to out to encrypt
            int numRead = 0;
            while ((numRead = in.read(buf)) >= 0)
            {
                out.write(buf, 0, numRead);
            }
            out.close();
        }
        catch (java.io.IOException e)
        {
        }
    }

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您始终可以将字符串包装在ByteArrayInputStream中，并将其传递给函数：

encrypt(new ByteArrayInputStream(theCell_00.getBytes()), outputStream)

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为什么？您使用的是哪种API？