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commit 324b637a2b89d1504645d1943d86febba3649311
Author: buildbot <us...@infra.apache.org>
AuthorDate: Wed Mar 22 05:34:46 2023 +0000
Automatic Site Publish by Buildbot
---
output/core-developers/file-upload.html | 82 ++++++++++++++++-----------------
1 file changed, 39 insertions(+), 43 deletions(-)
diff --git a/output/core-developers/file-upload.html
b/output/core-developers/file-upload.html
index ede426e0d..47f375784 100644
--- a/output/core-developers/file-upload.html
+++ b/output/core-developers/file-upload.html
@@ -145,8 +145,8 @@
</ul>
</li>
<li><a href="#advanced-configuration"
id="markdown-toc-advanced-configuration">Advanced Configuration</a> <ul>
- <li><a href="#file-size-limits" id="markdown-toc-file-size-limits">File
Size Limits</a></li>
<li><a href="#files-number-limit"
id="markdown-toc-files-number-limit">Files Number Limit</a></li>
+ <li><a href="#file-size-limits" id="markdown-toc-file-size-limits">File
Size Limits</a></li>
<li><a href="#file-types" id="markdown-toc-file-types">File
Types</a></li>
<li><a href="#error-messages" id="markdown-toc-error-messages">Error
Messages</a></li>
<li><a href="#temporary-directories"
id="markdown-toc-temporary-directories">Temporary Directories</a></li>
@@ -397,54 +397,53 @@ see <code class="language-plaintext
highlighter-rouge">struts-fileupload.xml</co
<h2 id="advanced-configuration">Advanced Configuration</h2>
<p>The Struts 2 <code class="language-plaintext
highlighter-rouge">default.properties</code> file defines several settings that
affect the behavior of file uploading. You may find
-in necessary to change these values. The names and default values are:</p>
+it necessary to change these values. The names and default values are:</p>
<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre
class="highlight"><code>struts.multipart.parser=jakarta
-struts.multipart.saveDir=
-struts.multipart.maxSize=2097152
-struts.multipart.maxFiles=256
+struts.multipart.saveDir= # Filesystem location to save parsed request data
+struts.multipart.maxSize=2097152 # Max combined size of files per request
+struts.multipart.maxFiles=256 # Max number of files per request
+struts.multipart.maxFileSize= # Max size per file per request
</code></pre></div></div>
-<blockquote>
- <p>Please remember that the <code class="language-plaintext
highlighter-rouge">struts.multipart.maxSize</code> is the size limit of the
whole request, which means when you’re
-uploading multiple files, the sum of their size must be below the <code
class="language-plaintext
highlighter-rouge">struts.multipart.maxSize</code>!</p>
-</blockquote>
+<p>You can also set the max options to unlimited by setting their value to
<code class="language-plaintext highlighter-rouge">-1</code>, but please see
the sections below for
+further details on these options first.</p>
+
+<h3 id="files-number-limit">Files Number Limit</h3>
+
+<p>Since Struts 6.1.2/6.2.0 a new option was added, which uses Commons
FileUpload feature to limit how many files can be
+uploaded at once, in one request. This option requires to use Commons
FileUpload ver. 1.5 at least and by default is set
+to <strong>256</strong>. Please always set this to a finite value to prevent
DoS attacks.</p>
-<p>In order to change these settings you define a constant in your
applications <code class="language-plaintext
highlighter-rouge">struts.xml</code> file like so:</p>
+<p>To change this value define a constant
+in <code class="language-plaintext highlighter-rouge">struts.xml</code> as
follows:</p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="nt"><struts></span>
- <span class="nt"><constant</span> <span class="na">name=</span><span
class="s">"struts.multipart.maxSize"</span> <span class="na">value=</span><span
class="s">"1000000"</span><span class="nt">/></span>
- ...
+ <span class="nt"><constant</span> <span class="na">name=</span><span
class="s">"struts.multipart.maxFiles"</span> <span
class="na">value=</span><span class="s">"500"</span><span
class="nt">/></span>
<span class="nt"></struts></span>
</code></pre></div></div>
-<p>Additionally, the <code class="language-plaintext
highlighter-rouge">fileUpload</code> interceptor has settings that can be put
in place for individual action mappings
-by customizing your interceptor stack.</p>
+<h3 id="file-size-limits">File Size Limits</h3>
-<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="nt"><action</span> <span
class="na">name=</span><span class="s">"doUpload"</span> <span
class="na">class=</span><span class="s">"com.example.UploadAction"</span><span
class="nt">></span>
- <span class="nt"><interceptor-ref</span> <span
class="na">name=</span><span class="s">"basicStack"</span><span
class="nt">/></span>
- <span class="nt"><interceptor-ref</span> <span
class="na">name=</span><span class="s">"fileUpload"</span><span
class="nt">></span>
- <span class="nt"><param</span> <span class="na">name=</span><span
class="s">"allowedTypes"</span><span class="nt">></span>text/plain<span
class="nt"></param></span>
- <span class="nt"></interceptor-ref></span>
- <span class="nt"><interceptor-ref</span> <span
class="na">name=</span><span class="s">"validation"</span><span
class="nt">/></span>
- <span class="nt"><interceptor-ref</span> <span
class="na">name=</span><span class="s">"workflow"</span><span
class="nt">/></span>
+<p>There are multiple methods to enforce file size limits.</p>
- <span class="nt"><result</span> <span class="na">name=</span><span
class="s">"success"</span><span class="nt">></span>good_result.jsp<span
class="nt"></result></span>
-<span class="nt"></action></span>
-</code></pre></div></div>
+<p>There is <code class="language-plaintext
highlighter-rouge">struts.multipart.maxSize</code> which is loaded from the
Struts configuration. This setting exists for security
+reasons to prohibit a malicious user from uploading extremely large files to
fill up your server’s disk space. This
+setting defaults to approximately 2MB and should be adjusted to the maximum
size (2GB) that you expect to parse. If you
+are uploading more than one file in a single request, the <code
class="language-plaintext highlighter-rouge">struts.multipart.maxSize</code>
applies to the combined total, not
+the individual files.</p>
-<h3 id="file-size-limits">File Size Limits</h3>
+<p>There is also <code class="language-plaintext
highlighter-rouge">struts.multipart.maxFileSize</code> which is not enforced by
default, but can be enabled to enforce a max size
+on a per-file basis.</p>
-<p>There are two separate file size limits. First is <code
class="language-plaintext highlighter-rouge">struts.multipart.maxSize</code>
which comes from the Struts
-2 <code class="language-plaintext highlighter-rouge">default.properties</code>
file. This setting exists for security reasons to prohibit a malicious user
from uploading
-extremely large files to file up your servers disk space. This setting
defaults to approximately 2 megabytes and should
-be adjusted to the maximum size file (2 gigs max) that your will need the
framework to receive. If you are uploading
-more than one file on a form the <code class="language-plaintext
highlighter-rouge">struts.multipart.maxSize</code> applies to the combined
total, not the individual file
-sizes. The other setting, <code class="language-plaintext
highlighter-rouge">maximumSize</code>, is an interceptor setting that is used
to ensure a particular Action does not
-receive a file that is too large. Notice the locations of both settings in the
following example:</p>
+<p>The other setting, <code class="language-plaintext
highlighter-rouge">maximumSize</code>, is an interceptor setting that is used
to ensure a particular Action does not receive
+a file that is too large. Note that the aforementioned settings are applied at
the request parsing level and take
+precedence over this interceptor setting.</p>
+<p>Notice the locations of these settings in the following example:</p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="nt"><struts></span>
<span class="nt"><constant</span> <span class="na">name=</span><span
class="s">"struts.multipart.maxSize"</span> <span class="na">value=</span><span
class="s">"1000000"</span><span class="nt">/></span>
+ <span class="nt"><constant</span> <span class="na">name=</span><span
class="s">"struts.multipart.maxFileSize"</span> <span
class="na">value=</span><span class="s">"750000"</span><span
class="nt">/></span>
<span class="nt"><action</span> <span class="na">name=</span><span
class="s">"doUpload"</span> <span class="na">class=</span><span
class="s">"com.example.UploadAction"</span><span class="nt">></span>
<span class="nt"><interceptor-ref</span> <span
class="na">name=</span><span class="s">"basicStack"</span><span
class="nt">/></span>
@@ -459,17 +458,6 @@ receive a file that is too large. Notice the locations of
both settings in the f
<span class="nt"></struts></span>
</code></pre></div></div>
-<h3 id="files-number-limit">Files Number Limit</h3>
-
-<p>Since Struts 6.1.2/6.2.0 a new option was added, which uses Commons
FileUpload feature to limit how many files can be uploaded
-at once, in one request. This option requires to use Commons FileUpload ver.
1.5 at least and by default is set to <strong>256</strong>.
-To change this value define a constant in <code class="language-plaintext
highlighter-rouge">struts.xml</code> as follows:</p>
-
-<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="nt"><struts></span>
- <span class="nt"><constant</span> <span class="na">name=</span><span
class="s">"struts.multipart.maxFiles"</span> <span
class="na">value=</span><span class="s">"500"</span><span
class="nt">/></span>
-<span class="nt"></struts></span>
-</code></pre></div></div>
-
<h3 id="file-types">File Types</h3>
<p>There are two ways to limit the uploaded file type, decoratively and
programmatically. To decoratively limit the file
@@ -529,6 +517,14 @@ messages by providing text for the following keys:</p>
<td><code class="language-plaintext
highlighter-rouge">struts.messages.upload.error.SizeLimitExceededException</code></td>
<td>Occurs when the upload request (as a whole) exceed configured
<strong>struts.multipart.maxSize</strong></td>
</tr>
+ <tr>
+ <td><code class="language-plaintext
highlighter-rouge">struts.messages.upload.error.FileSizeLimitExceededException</code></td>
+ <td>Occurs when a file within the upload request exceeds configured
<strong>struts.multipart.maxFileSize</strong></td>
+ </tr>
+ <tr>
+ <td><code class="language-plaintext
highlighter-rouge">struts.messages.upload.error.FileCountLimitExceededException</code></td>
+ <td>Occurs when the number of files in the upload request exceeds
configured <strong>struts.multipart.maxFiles</strong></td>
+ </tr>
<tr>
<td><code class="language-plaintext
highlighter-rouge">struts.messages.upload.error.<Exception class
SimpleName></code></td>
<td>Occurs when any other exception took place during file upload
process</td>
