CODEWITHSUNDEEP
javafilejava-ioioexception
Gavin Everett
Gavin Everett

Reputation: 31

java.io.IOException: Invalid file path while creating and writing in a File

I am trying to create a file inside a directory but when the code executes it brings back the error 'java.io.IOException: Invalid file path'. And the code does create the directory called 'ServerUploads' but it does not create the file. Below is a code snippet : 

   public static String performUploadOperation(byte[] file, String filename)
        throws IOException {
    //creating a directory to store file.
    //creating a directory to store users
    File userDirectory = new File("C:\\ServerUploads");
    //check if directory does not exist.
    if (!userDirectory.exists()) {
        userDirectory.mkdir();
    }


        File crreate = new File(userDirectory + "\\" +  filename);

        if(!crreate.exists())
        crreate.createNewFile();




    try{
    //convert the bytearray retrieved to a file and upload to server folder.
   FileOutputStream fos = new FileOutputStream(crreate);
   System.out.println(fos.toString());
        //write file to directory.
        fos.write(file);
        fos.close();
    }catch(FileNotFoundException e){
        e.printStackTrace();
    }
    sucess = "600 - The file has been successfully uploaded!";
    return sucess;
}

The filename being passed as argument is 'upload.txt' . I am not sure why it is not working. Any help is appreciated. Thanks!. Please see I need the method to return a String not a void as I have to further return it to the client.

Upvotes: 0

Views: 6888

Answers (2)

Gavin Everett
Gavin Everett

Reputation: 31

I have found the solution to the problem. The solution was to add '.trim()' to the filename string. There must have been some white-space when the file came in.

Upvotes: 2

AshwinK
AshwinK

Reputation: 1088

I tried following code block by just changing return type String to void as nothing was returned. It worked. The folder & file both get created. Here is the code block for same:

public static void performUploadOperation(byte[] file, String filename)
        throws IOException {
    //creating a directory to store file.
    //creating a directory to store users
    File userDirectory = new File("C:\\ServerUploads");
    //check if directory does not exist.
    if (!userDirectory.exists()) {
        userDirectory.mkdir();
    }
    File crreate = new File(userDirectory + "\\" + filename);

    if (!crreate.exists())
        crreate.createNewFile();
}

Calling above function from main:

public static void main(String args[]) throws IOException {
    performUploadOperation("abc".getBytes(),"testfile");
}

Upvotes: -1

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