The Spring Framework

## org.springframework.web.multipart
Interface MultipartFile

All Known Implementing Classes:
  CommonsMultipartFile, MockMultipartFile

    public interface MultipartFile

A representation of an uploaded file received in a multipart request.

The file contents are either stored in memory or temporarily on disk. In either case, the user is responsible for copying file contents to a session-level or persistent store as and if desired. The temporary storages will be cleared at the end of request processing.

Since:
  29.09.2003
Author:
  Juergen Hoeller, Trevor D. Cook
See Also:
  `MultipartHttpServletRequest`, `MultipartResolver`

Method Summary
`byte[]` `getBytes()` Return the contents of the file as an array of bytes.
`String` `getContentType()` Return the content type of the file.
`InputStream` `getInputStream()` Return an InputStream to read the contents of the file from.
`String` `getName()` Return the name of the parameter in the multipart form.
`String` `getOriginalFilename()` Return the original filename in the client's filesystem.
`long` `getSize()` Return the size of the file in bytes.
`boolean` `isEmpty()` Return whether the uploaded file is empty, that is, either no file has been chosen in the multipart form or the chosen file has no content.
`void` `transferTo(File dest)` Transfer the received file to the given destination file.

Method Detail

### getName

    String getName()

  Return the name of the parameter in the multipart form.

  Returns:
    the name of the parameter (never `null` or empty)

### getOriginalFilename

    String getOriginalFilename()

  Return the original filename in the client's filesystem.

  This may contain path information depending on the browser used, but it typically will not with any other than Opera.

  Returns:
    the original filename, or the empty String if no file has been chosen in the multipart form

### getContentType

    String getContentType()

  Return the content type of the file.

  Returns:
    the content type, or `null` if not defined (or no file has been chosen in the multipart form)

### isEmpty

    boolean isEmpty()

  Return whether the uploaded file is empty, that is, either no file has been chosen in the multipart form or the chosen file has no content.

### getSize

    long getSize()

  Return the size of the file in bytes.

  Returns:
    the size of the file, or 0 if empty

### getBytes

    byte[] getBytes()
                    throws IOException

  Return the contents of the file as an array of bytes.

  Returns:
    the contents of the file as bytes, or an empty byte array if empty
  Throws:
    `IOException` - in case of access errors (if the temporary store fails)

### getInputStream

    InputStream getInputStream()
                               throws IOException

  Return an InputStream to read the contents of the file from. The user is responsible for closing the stream.

  Returns:
    the contents of the file as stream, or an empty stream if empty
  Throws:
    `IOException` - in case of access errors (if the temporary store fails)

### transferTo

    void transferTo(File dest)
                    throws IOException,
                           IllegalStateException

  Transfer the received file to the given destination file.

  This may either move the file in the filesystem, copy the file in the filesystem, or save memory-held contents to the destination file. If the destination file already exists, it will be deleted first.

  If the file has been moved in the filesystem, this operation cannot be invoked again. Therefore, call this method just once to be able to work with any storage mechanism.

  Parameters:
    `dest` - the destination file
  Throws:
    `IOException` - in case of reading or writing errors
    `IllegalStateException` - if the file has already been moved in the filesystem and is not available anymore for another transfer

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