For some reason I keep getting java.nio.file.AccessDeniedException
every time I try to write to a folder on my computer using a java webapp on Tomcat. This folder has permissions set to full control for everyone on my computer (Windows). Does anybody know why I get this exception?
Here's my code:
public void saveDocument(String name, String siteID, byte doc[]) {
try {
Path path = Paths.get(rootDirectory + siteID);
if (Files.exists(path)) {
System.out.println("Exists: " + path.toString());
Files.write(path, doc);
} else {
System.out.println("DOesn't exist");
throw new Exception("Directory for Site with ID " + siteID + "doesn't exist");
}
} catch (FileSystemException e) {
System.out.println("Exception: " + e);
e.printStackTrace();
} catch (IOException e ) {
System.out.println("Exception: " + e);
e.printStackTrace();
} catch (Exception e) {
System.out.println("Exception: " + e);
e.printStackTrace();
}
And here is the error:
Exception: java.nio.file.AccessDeniedException: C:\safesite_documents\site1 java.nio.file.AccessDeniedException: C:\safesite_documents\site1 at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:83) at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:97) at sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:102) at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(WindowsFileSystemProvider.java:230) at java.nio.file.spi.FileSystemProvider.newOutputStream(FileSystemProvider.java:430) at java.nio.file.Files.newOutputStream(Files.java:172) at java.nio.file.Files.write(Files.java:3092)
Possible reason why: See my post on supersuser about how I can't uncheck 'Read Only' for any of my folders on windows 7. Even though all the folders aren't read only to anything but java.
This question is related to
java
file-io
io
access-denied
I was getting the same error when trying to copy a file. Closing a channel associated with the target file solved the problem.
Path destFile = Paths.get("dest file");
SeekableByteChannel destFileChannel = Files.newByteChannel(destFile);
//...
destFileChannel.close(); //removing this will throw java.nio.file.AccessDeniedException:
Files.copy(Paths.get("source file"), destFile);
Not the answer for this question
I got this exception when trying to delete a folder where i deleted the file inside.
Example:
createFolder("folder");
createFile("folder/file");
deleteFile("folder/file");
deleteFolder("folder"); // error here
While deleteFile("folder/file");
returned that it was deleted, the folder will only be considered empty after the program restart.
On some operating systems it may not be possible to remove a file when it is open and in use by this Java virtual machine or other programs.
https://docs.oracle.com/javase/8/docs/api/java/nio/file/Files.html#delete-java.nio.file.Path-
Getting
java.nio.file.AccessDeniedException
when trying to write to a folder
Unobviously, Comodo antivirus has an "Auto-Containment" setting that can cause this exact error as well. (e.g. the user can write to a location, but the java.exe
and javaw.exe
processes cannot).
In this edge-case scenario, adding an exception for the process and/or folder should help.
Temporarily disabling the antivirus feature will help understand if Comodo AV is the culprit.
I post this not because I use or prefer Comodo, but because it's a tremendously unobvious symptom to an otherwise functioning Java application and can cost many hours of troubleshooting file permissions that are sane and correct, but being blocked by a 3rd-party application.
Source: Stackoverflow.com