Class DiskFileItemFactory
- All Implemented Interfaces:
- FileItemFactory<DiskFileItem>
FileItemFactory implementation.
 
 This implementation creates FileItem instances which keep their content either in memory, for smaller items, or in a temporary file on disk, for
 larger items. The size threshold, above which content will be stored on disk, is configurable, as is the directory in which temporary files will be created.
 
If not otherwise configured, the default configuration values are as follows:
- Size threshold is 10 KB.
- Repository is the system default temporary directory, as returned by System.getProperty("java.io.tmpdir").
 NOTE: Files are created in the system default temporary directory with predictable names. This means that a local attacker with write access
 to that directory can perform a TOUTOC attack to replace any uploaded file with a file of the attackers choice. The implications of this will depend on how
 the uploaded file is used but could be significant. When using this implementation in an environment with local, untrusted users,
 AbstractOriginSupplier.setPath(Path) MUST be used to configure a repository location that is not publicly writable. In a Servlet container the location identified
 by the ServletContext attribute javax.servlet.context.tempdir may be used.
 
 Temporary files, which are created for file items, should be deleted later on. The best way to do this is using a FileCleaningTracker, which you can
 set on the DiskFileItemFactory. However, if you do use such a tracker, then you must consider the following: Temporary files are automatically
 deleted as soon as they are no longer needed. (More precisely, when the corresponding instance of File is garbage collected.) This is done by
 the so-called reaper thread, which is started and stopped automatically by the FileCleaningTracker when there are files to be tracked. It might make
 sense to terminate that thread, for example, if your web application ends. See the section on "Resource cleanup" in the users guide of Commons FileUpload.
 
- See Also:
- 
Nested Class SummaryNested ClassesNested classes/interfaces inherited from interface org.apache.commons.fileupload2.core.FileItemFactoryFileItemFactory.AbstractFileItemBuilder<I extends FileItem<I>,B extends FileItemFactory.AbstractFileItemBuilder<I, B>> 
- 
Field SummaryFieldsModifier and TypeFieldDescriptionstatic final intThe default threshold in bytes above which uploads will be stored on disk.
- 
Method SummaryModifier and TypeMethodDescriptionstatic DiskFileItemFactory.Builderbuilder()Constructs a newDiskFileItemFactory.Builder.Creates a new AbstractFileItemBuilder.Gets the default charset for use when no explicit charset parameter is provided by the sender.org.apache.commons.io.FileCleaningTrackerGets the tracker, which is responsible for deleting temporary files.Gets the directory used to temporarily store files that are larger than the configured size threshold.intGets the size threshold beyond which files are written directly to disk.
- 
Field Details- 
DEFAULT_THRESHOLDThe default threshold in bytes above which uploads will be stored on disk.- See Also:
 
 
- 
- 
Method Details- 
builderConstructs a newDiskFileItemFactory.Builder.- Returns:
- a new DiskFileItemFactory.Builder.
 
- 
fileItemBuilderDescription copied from interface:FileItemFactoryCreates a new AbstractFileItemBuilder.- Specified by:
- fileItemBuilderin interface- FileItemFactory<DiskFileItem>
- Returns:
- a new AbstractFileItemBuilder.
 
- 
getCharsetDefaultGets the default charset for use when no explicit charset parameter is provided by the sender.- Returns:
- the default charset
 
- 
getFileCleaningTrackerGets the tracker, which is responsible for deleting temporary files.- Returns:
- An instance of FileCleaningTracker, or null (default), if temporary files aren't tracked.
 
- 
getRepositoryGets the directory used to temporarily store files that are larger than the configured size threshold.- Returns:
- The directory in which temporary files will be located.
 
- 
getThresholdGets the size threshold beyond which files are written directly to disk. The default value is 10240 bytes.- Returns:
- The size threshold in bytes.
 
 
-