java file 关闭_JAVA FileChannel会关闭文件流

File file = new File(filePath);

BufferedOutputStream stream = null;

FileOutputStream fstream = null;

FileChannel fileChannel = null;

FileLock fileLock = null;

try {

fstream = new FileOutputStream(file);

fileChannel = fstream.getChannel();

fileLock = fileChannel.tryLock();

if (null != fileLock && fileLock.isValid()) {

stream = new BufferedOutputStream(fstream);

stream.write(data);

}

} catch (Exception e) {

e.printStackTrace();

} finally {

try {

if (null != fileLock) {

fileLock.release();

}

// if (null != fileChannel) {

// fileChannel.close();

// }

if (stream != null) {

stream.close();

}

if (null != fstream) {

fstream.close();

}

} catch (IOException e1) {

e1.printStackTrace();

}

}

在关闭

FileChannel 会导致文件流被关闭，特别是写较小文件时候，这个说明JDK8中，这个不需要去手动关闭