如何解决这个问题？
我收到以下错误:关闭此“FileOutputStream”。但我已经在finally block 中关闭了它
public void initHistoryForOldFile(File oldFile, String filePath) throws PIDException {
InputStream inStream = null;
OutputStream outStream = null;
try {
File historyFile = new File(StringUtil.append(filePath, File.separator, "history"));
FileUtils.ensureDirectory(historyFile);
File oldHistoryFile = new File(StringUtil.append(filePath, File.separator, "history", File.separator, oldFile.getName()));
oldHistoryFile.createNewFile();
if (oldFile.exists()) {
inStream = new FileInputStream(oldFile);
outStream = new FileOutputStream(oldHistoryFile);
byte[] buffer = new byte[PIDConstants.IMAGE_FILE_SIZE_LIMIT];
int length;
// copy the file content in bytes
while ((length = inStream.read(buffer)) > 0) {
outStream.write(buffer, 0, length);
}
// delete the original file
oldFile.delete();
}
} catch (IOException e) {
LOGGER.error("Exception occured in historyUpdateForOldFIle", e);
} finally {
if (null != inStream) {
try {
inStream.close();
} catch (IOException e) {
LOGGER.error("Exception occured whole closing inStream", e);
}
}
if (null != outStream) {
try {
outStream.close();
} catch (IOException e) {
LOGGER.error("Exception occured whole closing outStream", e);
}
}
}
}
最佳答案
如果使用 java 7
您可以使用Try with resources
try(InputStream inStream = new FileInputStream(oldFile)){}
The try-with-resources statement is a try statement that declares one or more resources. A resource is an object that must be closed after the program is finished with it. The try-with-resources statement ensures that each resource is closed at the end of the statement.
关于java - 如何解决这个问题关闭这个 "FileOutputStream"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47302271/