CODEWITHSUNDEEP
javaiofileutils
mosawi
mosawi

Reputation: 1323

Parameter 'directory' is not a directory for a parameter which is a directory

I'm getting a strange error where the parameter I supply to a method complains that it's not a directory but it IS in fact a directory with files in it...I don't understand what's wrong...

Toplevel:

public static File mainSchemaFile = new File("src/test/resources/1040.xsd");
public static File contentDirectory = new File("src/test/resources/input");
public static File outputDirectory = new File("src/test/resources/output");


DecisionTableBuilder builder =constructor.newInstance(log, contentDirectory, outputDirectory);

// Here is where the error occurs
builder.compile(mainSchemaFile);

The class I'm using:

public class DecisionTableBuilder {

   public void compiler(File schemaFile) {
      ...
      // It's complaining about contentDirectory, it goes to FileUtils class for this
      Collection<File> flowchartFiles = FileUtils.listFiles(contentDirectory, mapExtension, true);
      ...
   }
}

Here is the apache FileUtils class:

public class FileUtils {

    private static void validateListFilesParameters(File directory, IOFileFilter fileFilter) {
        if (!directory.isDirectory()) {
            throw new IllegalArgumentException("Parameter 'directory' is not a directory");
        }
        if (fileFilter == null) {
            throw new NullPointerException("Parameter 'fileFilter' is null");
        }
    }

}

Output: Parameter 'directory' is not a directory

Which is the error output I am getting...

Anyone have any idea what is happening here I'm super confused...any help will be greatly appreciated.

EDIT:

In my toplevel I added the following line:

if(contentDirectory.isDirectory()) {
    System.out.println("Content Directory: "+contentDirectory);
}

Output: src/test/resources/input

Upvotes: 6

Views: 20140

Answers (2)

questionto42
questionto42

Reputation: 9590

Error is thrown if paths cannot be reached

The file paths that you show do not tell where you try to run the code. If you are in your workspace, but you want to run it on a server, and the paths are meant to be on the server, see as follows:

I saw during debugging in the error logs of the console output of my own project that the code tried to get the data from my workspace. While coding, I thought that it would reach the files on the production server, but it did not.

Exception in thread "my_project" java.lang.IllegalArgumentException: Parameter 'directory' is not a directory
        at org.apache.commons.io.FileUtils.validateListFilesParameters(FileUtils.java:545)
        at org.apache.commons.io.FileUtils.listFiles(FileUtils.java:521)
        at org.apache.commons.io.FileUtils.listFiles(FileUtils.java:691)

With the needed file copied to my workspace and the right path in the code, the error was gone since it found the directory.

In my program, my working directory was the repository from where I ran the code. I had to pull the repository on the server to run it with the working directory on the server, so that it could find the production directory for the input files.

Upvotes: -1

Andrii Yaremchuk
Andrii Yaremchuk

Reputation: 90

You're pointing to the file and not a directory in mainSchemaFile variable. Reduce the path to the folder containing 1040.xsd - it should resolve the issue.

Upvotes: 0

Related Questions