我想写一个流并立即使用它,而不是将其写入文件和阅读。 FIles不会是线程安全的,我认为它可能会影响性能。
//set property to an existing file
prop.setProperty("$quoteValidity",""no");
prop.setProperty("$date", "today");
prop.setProperty("$quantitySum", Integer.toString(quantitySum));
//store it in temporary location
prop.store(new FileOutputStream("<Temp file location>"), null);
//open that temp file as stream
InputStream propfile = new FileInputStream("<Temp file location>");
List<Order> orderList = XmlToList.makeOrderFromNodeList(orderNode);
//use that temp file
Testground.generateXlsx(propfile,orderList);
答案 0 :(得分:1)
尝试使用ByteArrayOutputStream而不是FileOuputStream。然后你可以打电话
byte[] bytes=byteArrayOutputStream.toByteArray()
在ByteArrayOutputStream上获取字节
然后构造一个ByteArrayInputStream(bytes)并将其传递给Testground