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<div class="subTitle">org.apache.commons.fileupload.disk</div>
<h2 title="Class DiskFileItemFactory" class="title">Class DiskFileItemFactory</h2>
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<ul class="inheritance">
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<li>org.apache.commons.fileupload.disk.DiskFileItemFactory</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../org/apache/commons/fileupload/FileItemFactory.html" title="interface in org.apache.commons.fileupload">FileItemFactory</a></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../org/apache/commons/fileupload/DefaultFileItemFactory.html" title="class in org.apache.commons.fileupload">DefaultFileItemFactory</a></dd>
</dl>
<hr>
<br>
<pre>public class <span class="typeNameLabel">DiskFileItemFactory</span>
extends <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../../../../org/apache/commons/fileupload/FileItemFactory.html" title="interface in org.apache.commons.fileupload">FileItemFactory</a></pre>
<div class="block"><p>The default <a href="../../../../../org/apache/commons/fileupload/FileItemFactory.html" title="interface in org.apache.commons.fileupload"><code>FileItemFactory</code></a>
implementation. This implementation creates
<a href="../../../../../org/apache/commons/fileupload/FileItem.html" title="interface in org.apache.commons.fileupload"><code>FileItem</code></a> 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.</p>
<p>If not otherwise configured, the default configuration values are as
follows:</p>
<ul>
<li>Size threshold is 10KB.</li>
<li>Repository is the system default temp directory, as returned by
<code>System.getProperty("java.io.tmpdir")</code>.</li>
</ul>
<p>
<b>NOTE</b>: Files are created in the system default temp 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,
<a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#setRepository-java.io.File-"><code>setRepository(File)</code></a> MUST be used to configure a repository location
that is not publicly writable. In a Servlet container the location identified
by the ServletContext attribute <code>javax.servlet.context.tempdir</code>
may be used.
</p>
<p>Temporary files, which are created for file items, should be
deleted later on. The best way to do this is using a
<code>FileCleaningTracker</code>, which you can set on the
<a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html" title="class in org.apache.commons.fileupload.disk"><code>DiskFileItemFactory</code></a>. 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 <a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io"><code>File</code></a> is garbage collected.)
This is done by the so-called reaper thread, which is started and stopped
automatically by the <code>FileCleaningTracker</code> 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.</p></div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>FileUpload 1.1</dd>
<dt><span class="simpleTagLabel">Version:</span></dt>
<dd>$Id$</dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#DEFAULT_SIZE_THRESHOLD">DEFAULT_SIZE_THRESHOLD</a></span></code>
<div class="block">The default threshold above which uploads will be stored on disk.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#DiskFileItemFactory--">DiskFileItemFactory</a></span>()</code>
<div class="block">Constructs an unconfigured instance of this class.</div>
</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#DiskFileItemFactory-int-java.io.File-">DiskFileItemFactory</a></span>(int sizeThreshold,
<a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> repository)</code>
<div class="block">Constructs a preconfigured instance of this class.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code><a href="../../../../../org/apache/commons/fileupload/FileItem.html" title="interface in org.apache.commons.fileupload">FileItem</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#createItem-java.lang.String-java.lang.String-boolean-java.lang.String-">createItem</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fieldName,
<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> contentType,
boolean isFormField,
<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fileName)</code>
<div class="block">Create a new <a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItem.html" title="class in org.apache.commons.fileupload.disk"><code>DiskFileItem</code></a>
instance from the supplied parameters and the local factory
configuration.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>org.apache.commons.io.FileCleaningTracker</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#getFileCleaningTracker--">getFileCleaningTracker</a></span>()</code>
<div class="block">Returns the tracker, which is responsible for deleting temporary
files.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#getRepository--">getRepository</a></span>()</code>
<div class="block">Returns the directory used to temporarily store files that are larger
than the configured size threshold.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#getSizeThreshold--">getSizeThreshold</a></span>()</code>
<div class="block">Returns the size threshold beyond which files are written directly to
disk.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#setFileCleaningTracker-org.apache.commons.io.FileCleaningTracker-">setFileCleaningTracker</a></span>(org.apache.commons.io.FileCleaningTracker pTracker)</code>
<div class="block">Sets the tracker, which is responsible for deleting temporary
files.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#setRepository-java.io.File-">setRepository</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> repository)</code>
<div class="block">Sets the directory used to temporarily store files that are larger
than the configured size threshold.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#setSizeThreshold-int-">setSizeThreshold</a></span>(int sizeThreshold)</code>
<div class="block">Sets the size threshold beyond which files are written directly to disk.</div>
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<code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h4>DEFAULT_SIZE_THRESHOLD</h4>
<pre>public static final int DEFAULT_SIZE_THRESHOLD</pre>
<div class="block">The default threshold above which uploads will be stored on disk.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../constant-values.html#org.apache.commons.fileupload.disk.DiskFileItemFactory.DEFAULT_SIZE_THRESHOLD">Constant Field Values</a></dd>
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<pre>public DiskFileItemFactory()</pre>
<div class="block">Constructs an unconfigured instance of this class. The resulting factory
may be configured by calling the appropriate setter methods.</div>
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<pre>public DiskFileItemFactory(int sizeThreshold,
<a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> repository)</pre>
<div class="block">Constructs a preconfigured instance of this class.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sizeThreshold</code> - The threshold, in bytes, below which items will be
retained in memory and above which they will be
stored as a file.</dd>
<dd><code>repository</code> - The data repository, which is the directory in
which files will be created, should the item size
exceed the threshold.</dd>
</dl>
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<h4>getRepository</h4>
<pre>public <a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> getRepository()</pre>
<div class="block">Returns the directory used to temporarily store files that are larger
than the configured size threshold.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The directory in which temporary files will be located.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#setRepository-java.io.File-"><code>setRepository(java.io.File)</code></a></dd>
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<h4>setRepository</h4>
<pre>public void setRepository(<a href="http://docs.oracle.com/javase/8/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> repository)</pre>
<div class="block">Sets the directory used to temporarily store files that are larger
than the configured size threshold.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>repository</code> - The directory in which temporary files will be located.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#getRepository--"><code>getRepository()</code></a></dd>
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<pre>public int getSizeThreshold()</pre>
<div class="block">Returns the size threshold beyond which files are written directly to
disk. The default value is 10240 bytes.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The size threshold, in bytes.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#setSizeThreshold-int-"><code>setSizeThreshold(int)</code></a></dd>
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<h4>setSizeThreshold</h4>
<pre>public void setSizeThreshold(int sizeThreshold)</pre>
<div class="block">Sets the size threshold beyond which files are written directly to disk.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>sizeThreshold</code> - The size threshold, in bytes.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItemFactory.html#getSizeThreshold--"><code>getSizeThreshold()</code></a></dd>
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<h4>createItem</h4>
<pre>public <a href="../../../../../org/apache/commons/fileupload/FileItem.html" title="interface in org.apache.commons.fileupload">FileItem</a> createItem(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fieldName,
<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> contentType,
boolean isFormField,
<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> fileName)</pre>
<div class="block">Create a new <a href="../../../../../org/apache/commons/fileupload/disk/DiskFileItem.html" title="class in org.apache.commons.fileupload.disk"><code>DiskFileItem</code></a>
instance from the supplied parameters and the local factory
configuration.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/commons/fileupload/FileItemFactory.html#createItem-java.lang.String-java.lang.String-boolean-java.lang.String-">createItem</a></code> in interface <code><a href="../../../../../org/apache/commons/fileupload/FileItemFactory.html" title="interface in org.apache.commons.fileupload">FileItemFactory</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>fieldName</code> - The name of the form field.</dd>
<dd><code>contentType</code> - The content type of the form field.</dd>
<dd><code>isFormField</code> - <code>true</code> if this is a plain form field;
<code>false</code> otherwise.</dd>
<dd><code>fileName</code> - The name of the uploaded file, if any, as supplied
by the browser or other client.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The newly created file item.</dd>
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<h4>getFileCleaningTracker</h4>
<pre>public org.apache.commons.io.FileCleaningTracker getFileCleaningTracker()</pre>
<div class="block">Returns the tracker, which is responsible for deleting temporary
files.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>An instance of <code>FileCleaningTracker</code>, or null
(default), if temporary files aren't tracked.</dd>
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<h4>setFileCleaningTracker</h4>
<pre>public void setFileCleaningTracker(org.apache.commons.io.FileCleaningTracker pTracker)</pre>
<div class="block">Sets the tracker, which is responsible for deleting temporary
files.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pTracker</code> - An instance of <code>FileCleaningTracker</code>,
which will from now on track the created files, or null
(default), to disable tracking.</dd>
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