CODEWITHSUNDEEP
java
Peter Penzov
Peter Penzov

Reputation: 1678

Create directory from rest param

I want to create directory under one main root dir. I tried this code:

private static String UPLOADED_FOLDER = "/opt/";

@PostMapping
public ResponseEntity<StringResponseDTO> uploadData(@RequestParam("file") MultipartFile file, RedirectAttributes redirectAttributes, @RequestParam("id") Integer merchant_id) throws Exception {    
    InputStream inputStream = file.getInputStream();
    String originalName = file.getOriginalFilename();
    String name = file.getName();
    String contentType = file.getContentType();
    long size = file.getSize();
    LOG.info("name: " + name);
    LOG.info("contentType: " + contentType);
    LOG.info("size: " + size);

    try {
        byte[] bytes = file.getBytes();           
        File newFile = new File(UPLOADED_FOLDER + merchant_id, file.getOriginalFilename());
        LOG.info("New file location: " + newFile.getAbsolutePath()); //Log the path
        Files.write(newFile.toPath(), bytes);

    } catch (IOException e) {
        e.printStackTrace();
    }

    return ResponseEntity.ok(new StringResponseDTO(originalName));
}

But I get exception:

2019-08-12 09:53:30,748 INFO  [stdout] (default task-79) 09:53:30.747 [default task-79] INFO  o.d.a.b.restapi.MerchantController - New file location: /opt/13/Screenshot 2019-08-01 at 14.58.59.png
2019-08-12 09:53:30,749 ERROR [stderr] (default task-79) java.nio.file.NoSuchFileException: /opt/13/Screenshot 2019-08-01 at 14.58.59.png
2019-08-12 09:53:30,750 ERROR [stderr] (default task-79)    at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)

Do I need to convert the number merchant_id into String?

Upvotes: 0

Views: 57

Answers (1)

northpl93
northpl93

Reputation: 612

I think exception is thrown because directory /opt/13 doesn't exists. Files.write will create file, but no parent directories. Here is part of Files.write documentation:

The options parameter specifies how the the file is created or opened. If no options are present then this method works as if the CREATE, TRUNCATE_EXISTING, and WRITE options are present. In other words, it opens the file for writing, creating the file if it doesn't exist, or initially truncating an existing regular-file to a size of 0.

Replace the following lines

File newFile = new File(UPLOADED_FOLDER + merchant_id, file.getOriginalFilename());
LOG.info("New file location: " + newFile.getAbsolutePath()); //Log the path
Files.write(newFile.toPath(), bytes);

with

File directory = new File(UPLOADED_FOLDER, merchant_id.toString());
directory.mkdirs();
File newFile = new File(directory, file.getOriginalFilename());
LOG.info("New file location: " + newFile.getAbsolutePath()); //Log the path
Files.write(newFile.toPath(), bytes);

Upvotes: 1

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