MultipartFile
| org.springframework.web.multipart.MultipartFile |
 Known Indirect Subclasses
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Class Overview
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.
Summary
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Return the contents of the file as an array of bytes.
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Return the content type of the file.
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Return an InputStream to read the contents of the file from.
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Return the name of the parameter in the multipart form.
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Return the original filename in the client's filesystem.
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Return the size of the file in bytes.
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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.
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Transfer the received file to the given destination file.
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Public Methods
public abstract byte[] getBytes ()
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) |
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public abstract String getContentType ()
Return the content type of the file.
Returns
- the content type, or
nullif not defined (or no file has been chosen in the multipart form)
public abstract InputStream getInputStream ()
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) |
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public abstract String getName ()
Return the name of the parameter in the multipart form.
Returns
- the name of the parameter (never
nullor empty)
public abstract 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
public abstract long getSize ()
Return the size of the file in bytes.
Returns
- the size of the file, or 0 if empty
public abstract 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.
public abstract void transferTo (File dest)
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 |
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Throws
| IOException | in case of reading or writing errors |
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| IllegalStateException | if the file has already been moved in the filesystem and is not available anymore for another transfer |