java.nio.file.FileSystemException: C:\p12\dummy.p12: The process cannot access the file because it-CodePudding

I have a p12 file upload function with the following code:

Then I want to create a function to delete the p12 file with the following code:

And when I run the result there is an error:

java.nio.file.FileSystemException: C:\p12\dummy.p12: The process cannot access the file because it is being used by another process.

Is there a way for the file to be deleted successfully?

UPDATE : I've found the problem, apparently because the p12 file is used in this function:

Is there a way to still be able to delete the p12 file?

CodePudding user response：

The exception is telling you that there is another process that has the file open and therefore it can't be deleted. Take a look at your system processes (most probably applications) in Windows and see which application has the file open. Do you have the file open in a text editor such as notepad or in a command line shell? You have to close it there before it can be deleted.

You open the file

InputStream keyStoreStream = new FileInputStream(fileDir);

but the resource is never closed. Enclose the relevant parts in a try-with-resources block

Map<String, String> certSn;
try (InputStream keyStoreStream = new FileInputStream(fileDir)) {
    certSn =  = getP12Cert(keyStoreStream, passphrase.getPassphrase());
    // set up your assigneeModel here
} catch (IOException e) {
    // TODO throw or handle the exception however you need to
}

// rest of code here