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---
output/core-developers/file-upload.html | 611 ++++++++++++--------------------
1 file changed, 220 insertions(+), 391 deletions(-)
diff --git a/output/core-developers/file-upload.html
b/output/core-developers/file-upload.html
index 5bf597a..c1723f0 100644
--- a/output/core-developers/file-upload.html
+++ b/output/core-developers/file-upload.html
@@ -1,175 +1,21 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
- <meta charset="UTF-8"/>
- <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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- <meta http-equiv="Content-Language" content="en"/>
- <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
-
- <title>File Upload</title>
-
- <link
href="//fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600,700,400italic,600italic,700italic"
rel="stylesheet" type="text/css">
- <link
href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css"
rel="stylesheet">
- <link href="/css/main.css" rel="stylesheet">
- <link href="/css/custom.css" rel="stylesheet">
- <link href="/highlighter/github-theme.css" rel="stylesheet">
-
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- <script type="text/javascript" src="/bootstrap/js/bootstrap.js"></script>
- <script type="text/javascript" src="/js/community.js"></script>
-</head>
-<body>
-
-<a href="http://github.com/apache/struts"; class="github-ribbon">
- <img style="position: absolute; right: 0; border: 0;"
src="https://s3.amazonaws.com/github/ribbons/forkme_right_red_aa0000.png";
alt="Fork me on GitHub">
-</a>
-
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- <a href="index.html" title="back to Core Developers Guide"><< back to Core
Developers Guide</a>
- <a class="edit-on-gh"
href="https://github.com/apache/struts-site/edit/master/source/core-developers/file-upload.md";
title="Edit this page on GitHub">Edit on GitHub</a>
- <h1 class="no_toc" id="file-upload">File Upload</h1>
-
-<ul id="markdown-toc">
- <li><a href="#dependencies" id="markdown-toc-dependencies">Dependencies</a>
<ul>
- <li><a href="#struts-20x-file-upload-dependencies"
id="markdown-toc-struts-20x-file-upload-dependencies">Struts 2.0.x File Upload
Dependencies</a></li>
- <li><a href="#struts-21x-file-upload-dependencies"
id="markdown-toc-struts-21x-file-upload-dependencies">Struts 2.1.x File Upload
Dependencies</a></li>
- </ul>
- </li>
- <li><a href="#basic-usage" id="markdown-toc-basic-usage">Basic Usage</a>
<ul>
- <li><a href="#example-action-mapping"
id="markdown-toc-example-action-mapping">Example action mapping:</a></li>
- <li><a href="#example-jsp-form-tags"
id="markdown-toc-example-jsp-form-tags">Example JSP form tags:</a></li>
- <li><a href="#example-action-class"
id="markdown-toc-example-action-class">Example Action class:</a></li>
- </ul>
- </li>
- <li><a href="#uploading-multiple-files"
id="markdown-toc-uploading-multiple-files">Uploading Multiple Files</a> <ul>
- <li><a href="#uploading-multiple-files-using-arrays"
id="markdown-toc-uploading-multiple-files-using-arrays">Uploading Multiple
Files using Arrays</a></li>
- <li><a href="#uploading-multiple-files-using-lists"
id="markdown-toc-uploading-multiple-files-using-lists">Uploading Multiple Files
using Lists</a></li>
- </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="#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>
- <li><a href="#alternate-libraries"
id="markdown-toc-alternate-libraries">Alternate Libraries</a></li>
- <li><a href="#request-validation"
id="markdown-toc-request-validation">Request validation</a></li>
- <li><a href="#disabling-file-upload-support"
id="markdown-toc-disabling-file-upload-support">Disabling file upload
support</a></li>
- </ul>
- </li>
+<h1 id="file-upload">File Upload</h1>
+
+<ul class="no_toc">
+ <li>Will be replaced with the ToC, excluding a header {:toc}</li>
</ul>
-<p>The Struts 2 framework provides built-in support for processing file
uploads that conform to <a href="http://www.ietf.org/rfc/rfc1867.txt";>RFC
1867</a>,
-“Form-based File Upload in HTML”. When correctly configured the framework will
pass uploaded file(s) into your Action class.
-Support for individual and multiple file uploads are provided. When a file is
uploaded it will typically be stored in a temporary directory.
-Uploaded files should be processed or moved by your Action class to ensure the
data is not lost. Be aware that servers may have a security
-policy in place that prohibits you from writing to directories other than the
temporary directory and the directories that belong to your
-web application.</p>
+<p>The Struts 2 framework provides built-in support for processing file
uploads that conform
+to <a href="http://www.ietf.org/rfc/rfc1867.txt";>RFC 1867</a>,
+“Form-based File Upload in HTML”. When correctly configured the framework will
pass uploaded file(s) into your Action
+class. Support for individual and multiple file uploads are provided. When a
file is uploaded it will typically be
+stored in a temporary directory. Uploaded files should be processed or moved
by your Action class to ensure the data is
+not lost. Be aware that servers may have a security policy in place that
prohibits you from writing to directories other
+than the temporary directory and the directories that belong to your web
application.</p>
<h2 id="dependencies">Dependencies</h2>
-<p>The Struts 2 framework leverages add-on libraries to handle the parsing of
uploaded files. These libraries are not included in the Struts
-distribution, you must add them into your project. The libraries needed
are:</p>
+<p>The Struts 2 framework leverages add-on libraries to handle the parsing of
uploaded files. These libraries are not
+included in the Struts distribution, you must add them into your project. The
libraries needed are:</p>
<table>
<thead>
@@ -231,9 +77,9 @@ distribution, you must add them into your project. The
libraries needed are:</p>
<h2 id="basic-usage">Basic Usage</h2>
-<p>The <code
class="highlighter-rouge">org.apache.struts2.interceptor.FileUploadInterceptor</code>
class is included as part of the <code
class="highlighter-rouge">defaultStack</code>. As long as the required
libraries
-are added to your project you will be able to take advantage of of the Struts
2 fileUpload capability. Configure an Action mapping for your
-Action class as you typically would.</p>
+<p>The <code
class="highlighter-rouge">org.apache.struts2.interceptor.FileUploadInterceptor</code>
class is included as part of the <code
class="highlighter-rouge">defaultStack</code>. As long as
+the required libraries are added to your project you will be able to take
advantage of of the Struts 2 fileUpload
+capability. Configure an Action mapping for your Action class as you typically
would.</p>
<h3 id="example-action-mapping">Example action mapping:</h3>
@@ -243,55 +89,57 @@ Action class as you typically would.</p>
</code></pre></div></div>
-<p>A form must be create with a form field of type file, <code
class="highlighter-rouge"><INPUT type="file" name="upload"></code>. The
form used to upload the file must have its
-encoding type set to <code
class="highlighter-rouge">multipart/form-data</code>, <code
class="highlighter-rouge"><form action="doUpload"
enctype="multipart/form-data" method="post"></code>. The standard procedure
-for adding these elements is by using the Struts 2 tag libraries as shown in
the following example:</p>
+<p>A form must be create with a form field of type file, <code
class="highlighter-rouge"><INPUT type="file" name="upload"></code>. The
form used to upload the
+file must have its encoding type set to <code
class="highlighter-rouge">multipart/form-data</code>
+, <code class="highlighter-rouge"><form action="doUpload"
enctype="multipart/form-data" method="post"></code>. The standard procedure
for adding these
+elements is by using the Struts 2 tag libraries as shown in the following
example:</p>
<h3 id="example-jsp-form-tags">Example JSP form tags:</h3>
-<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code> <span class="nt"><s:form</span> <span
class="na">action=</span><span class="s">"doUpload"</span> <span
class="na">method=</span><span class="s">"post"</span> <span
class="na">enctype=</span><span class="s">"multipart/form-data"</span><span
class="nt">></span>
- <span class="nt"><s:file</span> <span class="na">name=</span><span
class="s">"upload"</span> <span class="na">label=</span><span
class="s">"File"</span><span class="nt">/></span>
- <span class="nt"><s:submit/></span>
- <span class="nt"></s:form></span>
+<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="nt"><s:form</span> <span
class="na">action=</span><span class="s">"doUpload"</span> <span
class="na">method=</span><span class="s">"post"</span> <span
class="na">enctype=</span><span class="s">"multipart/form-data"</span><span
class="nt">></span>
+ <span class="nt"><s:file</span> <span class="na">name=</span><span
class="s">"upload"</span> <span class="na">label=</span><span
class="s">"File"</span><span class="nt">/></span>
+ <span class="nt"><s:submit/></span>
+<span class="nt"></s:form></span>
</code></pre></div></div>
-<p>The fileUpload interceptor will use setter injection to insert the uploaded
file and related data into your Action class. For a form field
-named <code class="highlighter-rouge">upload</code> you would provide the
three setter methods shown in the following example:</p>
+<p>The fileUpload interceptor will use setter injection to insert the uploaded
file and related data into your Action
+class. For a form field named <code class="highlighter-rouge">upload</code>
you would provide the three setter methods shown in the following example:</p>
<h3 id="example-action-class">Example Action class:</h3>
<div class="language-java highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="kn">package</span> <span
class="n">com</span><span class="o">.</span><span
class="na">example</span><span class="o">;</span>
- <span class="kn">import</span> <span class="nn">java.io.File</span><span
class="o">;</span>
- <span class="kn">import</span> <span
class="nn">com.opensymphony.xwork2.ActionSupport</span><span class="o">;</span>
+<span class="kn">import</span> <span class="nn">java.io.File</span><span
class="o">;</span>
- <span class="kd">public</span> <span class="kd">class</span> <span
class="nc">UploadAction</span> <span class="kd">extends</span> <span
class="n">ActionSupport</span> <span class="o">{</span>
- <span class="kd">private</span> <span class="n">File</span> <span
class="n">file</span><span class="o">;</span>
- <span class="kd">private</span> <span class="n">String</span> <span
class="n">contentType</span><span class="o">;</span>
- <span class="kd">private</span> <span class="n">String</span> <span
class="n">filename</span><span class="o">;</span>
+<span class="kn">import</span> <span
class="nn">com.opensymphony.xwork2.ActionSupport</span><span class="o">;</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUpload</span><span class="o">(</span><span class="n">File</span>
<span class="n">file</span><span class="o">)</span> <span class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">file</span> <span class="o">=</span> <span
class="n">file</span><span class="o">;</span>
- <span class="o">}</span>
+<span class="kd">public</span> <span class="kd">class</span> <span
class="nc">UploadAction</span> <span class="kd">extends</span> <span
class="n">ActionSupport</span> <span class="o">{</span>
+ <span class="kd">private</span> <span class="n">File</span> <span
class="n">file</span><span class="o">;</span>
+ <span class="kd">private</span> <span class="n">String</span> <span
class="n">contentType</span><span class="o">;</span>
+ <span class="kd">private</span> <span class="n">String</span> <span
class="n">filename</span><span class="o">;</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadContentType</span><span class="o">(</span><span
class="n">String</span> <span class="n">contentType</span><span
class="o">)</span> <span class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">contentType</span> <span class="o">=</span> <span
class="n">contentType</span><span class="o">;</span>
- <span class="o">}</span>
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUpload</span><span class="o">(</span><span class="n">File</span>
<span class="n">file</span><span class="o">)</span> <span class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">file</span> <span class="o">=</span> <span
class="n">file</span><span class="o">;</span>
+ <span class="o">}</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadFileName</span><span class="o">(</span><span
class="n">String</span> <span class="n">filename</span><span class="o">)</span>
<span class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">filename</span> <span class="o">=</span> <span
class="n">filename</span><span class="o">;</span>
- <span class="o">}</span>
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadContentType</span><span class="o">(</span><span
class="n">String</span> <span class="n">contentType</span><span
class="o">)</span> <span class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">contentType</span> <span class="o">=</span> <span
class="n">contentType</span><span class="o">;</span>
+ <span class="o">}</span>
- <span class="kd">public</span> <span class="n">String</span> <span
class="nf">execute</span><span class="o">()</span> <span class="o">{</span>
- <span class="c1">//...</span>
- <span class="k">return</span> <span class="n">SUCCESS</span><span
class="o">;</span>
- <span class="o">}</span>
- <span class="o">}</span>
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadFileName</span><span class="o">(</span><span
class="n">String</span> <span class="n">filename</span><span class="o">)</span>
<span class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">filename</span> <span class="o">=</span> <span
class="n">filename</span><span class="o">;</span>
+ <span class="o">}</span>
+ <span class="kd">public</span> <span class="n">String</span> <span
class="nf">execute</span><span class="o">()</span> <span class="o">{</span>
+ <span class="c1">//...</span>
+ <span class="k">return</span> <span class="n">SUCCESS</span><span
class="o">;</span>
+ <span class="o">}</span>
+<span class="o">}</span>
</code></pre></div></div>
-<p>The purpose of each one of these methods is described in the table below.
Notice that if you have multiple file form elements with different
-names you would be required to have another corresponding set of these methods
for each file uploaded.</p>
+<p>The purpose of each one of these methods is described in the table below.
Notice that if you have multiple file form
+elements with different names you would be required to have another
corresponding set of these methods for each file
+uploaded.</p>
<table>
<thead>
@@ -318,66 +166,73 @@ names you would be required to have another corresponding
set of these methods f
<h2 id="uploading-multiple-files">Uploading Multiple Files</h2>
-<p>As mentioned in the previous section one technique for uploading multiple
files would be to simply have multiple form input elements of type
-file all with different names. This would require a number of setter methods
that was equal to 3 times the number of files being uploaded.
-Another option is to use Arrays or java.util.Lists. The following examples are
taken from the Showcase example application that is part
-sample applications you can download at <a
href="http://struts.apache.org/download.cgi";>http://struts.apache.org/download.cgi</a>.
For the Action mapping
-details see <code class="highlighter-rouge">struts-fileupload.xml</code> in
the sample application download.</p>
+<p>As mentioned in the previous section one technique for uploading multiple
files would be to simply have multiple form
+input elements of type file all with different names. This would require a
number of setter methods that was equal to 3
+times the number of files being uploaded. Another option is to use Arrays or
java.util.Lists. The following examples are
+taken from the Showcase example application that is part sample applications
you can download
+at <a
href="http://struts.apache.org/download.cgi";>http://struts.apache.org/download.cgi</a>.
For the Action mapping details
+see <code class="highlighter-rouge">struts-fileupload.xml</code> in the sample
application download.</p>
<h3 id="uploading-multiple-files-using-arrays">Uploading Multiple Files using
Arrays</h3>
<p><code class="highlighter-rouge">multipleUploadUsingArray.jsp</code> Notice
all file input types have the same name.</p>
-<pre><code class="language-jsp"><s:form action="doMultipleUploadUsingArray"
method="POST" enctype="multipart/form-data">
- <s:file label="File (1)" name="upload" />
- <s:file label="File (2)" name="upload" />
- <s:file label="FIle (3)" name="upload" />
- <s:submit cssClass="btn btn-primary"/>
-</s:form>
-</code></pre>
+<div class="language-html highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="nt"><s:form</span> <span
class="na">action=</span><span class="s">"doMultipleUploadUsingArray"</span>
<span class="na">method=</span><span class="s">"POST"</span> <span
class="na">enctype=</span><span class="s">"multipart/form-data"</span><span
class="nt">></span>
+ <span class="nt"><s:file</span> <span class="na">label=</span><span
class="s">"File (1)"</span> <span class="na">name=</span><span
class="s">"upload"</span> <span class="nt">/></span>
+ <span class="nt"><s:file</span> <span class="na">label=</span><span
class="s">"File (2)"</span> <span class="na">name=</span><span
class="s">"upload"</span> <span class="nt">/></span>
+ <span class="nt"><s:file</span> <span class="na">label=</span><span
class="s">"FIle (3)"</span> <span class="na">name=</span><span
class="s">"upload"</span> <span class="nt">/></span>
+ <span class="nt"><s:submit</span> <span class="na">cssClass=</span><span
class="s">"btn btn-primary"</span><span class="nt">/></span>
+<span class="nt"></s:form></span>
+</code></pre></div></div>
<p><code
class="highlighter-rouge">MultipleFileUploadUsingArrayAction.java</code></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="kd">public</span> <span
class="kd">class</span> <span
class="nc">MultipleFileUploadUsingArrayAction</span> <span
class="kd">extends</span> <span class="n">ActionSupport</span> <span
class="o">{</span>
- <span class="kd">private</span> <span class="n">File</span><span
class="o">[]</span> <span class="n">uploads</span><span class="o">;</span>
- <span class="kd">private</span> <span class="n">String</span><span
class="o">[]</span> <span class="n">uploadFileNames</span><span
class="o">;</span>
- <span class="kd">private</span> <span class="n">String</span><span
class="o">[]</span> <span class="n">uploadContentTypes</span><span
class="o">;</span>
-
- <span class="kd">public</span> <span class="n">String</span> <span
class="nf">upload</span><span class="o">()</span> <span
class="kd">throws</span> <span class="n">Exception</span> <span
class="o">{</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"\n\n
upload2"</span><span class="o">);</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"files:"</span><span class="o">);</span>
- <span class="k">for</span> <span class="o">(</span><span
class="n">File</span> <span class="n">u</span> <span class="o">:</span> <span
class="n">uploads</span><span class="o">)</span> <span class="o">{</span>
- <span class="n">System</span><span
class="o">.</span><span class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">u</span> <span class="o">+</span>
<span class="s">"\t"</span> <span class="o">+</span> <span
class="n">u</span><span class="o">.</span><span class="na">length</span><span
class="o">());</span>
- <span class="o">}</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"filenames:"</span><span class="o">);</span>
- <span class="k">for</span> <span class="o">(</span><span
class="n">String</span> <span class="n">n</span> <span class="o">:</span> <span
class="n">uploadFileNames</span><span class="o">)</span> <span
class="o">{</span>
- <span class="n">System</span><span
class="o">.</span><span class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">n</span><span class="o">);</span>
- <span class="o">}</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"content
types:"</span><span class="o">);</span>
- <span class="k">for</span> <span class="o">(</span><span
class="n">String</span> <span class="n">c</span> <span class="o">:</span> <span
class="n">uploadContentTypes</span><span class="o">)</span> <span
class="o">{</span>
- <span class="n">System</span><span
class="o">.</span><span class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">c</span><span class="o">);</span>
- <span class="o">}</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"\n\n"</span><span class="o">);</span>
- <span class="k">return</span> <span
class="n">SUCCESS</span><span class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="n">File</span><span
class="o">[]</span> <span class="nf">getUpload</span><span class="o">()</span>
<span class="o">{</span>
- <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploads</span><span class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUpload</span><span class="o">(</span><span
class="n">File</span><span class="o">[]</span> <span
class="n">upload</span><span class="o">)</span> <span class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">uploads</span> <span class="o">=</span> <span
class="n">upload</span><span class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="n">String</span><span
class="o">[]</span> <span class="nf">getUploadFileName</span><span
class="o">()</span> <span class="o">{</span>
- <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploadFileNames</span><span
class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadFileName</span><span class="o">(</span><span
class="n">String</span><span class="o">[]</span> <span
class="n">uploadFileName</span><span class="o">)</span> <span class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">uploadFileNames</span> <span class="o">=</span> <span
class="n">uploadFileName</span><span class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="n">String</span><span
class="o">[]</span> <span class="nf">getUploadContentType</span><span
class="o">()</span> <span class="o">{</span>
- <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploadContentTypes</span><span
class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadContentType</span><span class="o">(</span><span
class="n">String</span><span class="o">[]</span> <span
class="n">uploadContentType</span><span class="o">)</span> <span
class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">uploadContentTypes</span> <span class="o">=</span> <span
class="n">uploadContentType</span><span class="o">;</span>
- <span class="o">}</span>
+ <span class="kd">private</span> <span class="n">File</span><span
class="o">[]</span> <span class="n">uploads</span><span class="o">;</span>
+ <span class="kd">private</span> <span class="n">String</span><span
class="o">[]</span> <span class="n">uploadFileNames</span><span
class="o">;</span>
+ <span class="kd">private</span> <span class="n">String</span><span
class="o">[]</span> <span class="n">uploadContentTypes</span><span
class="o">;</span>
+
+ <span class="kd">public</span> <span class="n">String</span> <span
class="nf">upload</span><span class="o">()</span> <span
class="kd">throws</span> <span class="n">Exception</span> <span
class="o">{</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"\n\n
upload2"</span><span class="o">);</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"files:"</span><span class="o">);</span>
+ <span class="k">for</span> <span class="o">(</span><span
class="n">File</span> <span class="n">u</span> <span class="o">:</span> <span
class="n">uploads</span><span class="o">)</span> <span class="o">{</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">u</span> <span class="o">+</span>
<span class="s">"\t"</span> <span class="o">+</span> <span
class="n">u</span><span class="o">.</span><span class="na">length</span><span
class="o">());</span>
+ <span class="o">}</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"filenames:"</span><span class="o">);</span>
+ <span class="k">for</span> <span class="o">(</span><span
class="n">String</span> <span class="n">n</span> <span class="o">:</span> <span
class="n">uploadFileNames</span><span class="o">)</span> <span
class="o">{</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">n</span><span class="o">);</span>
+ <span class="o">}</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"content
types:"</span><span class="o">);</span>
+ <span class="k">for</span> <span class="o">(</span><span
class="n">String</span> <span class="n">c</span> <span class="o">:</span> <span
class="n">uploadContentTypes</span><span class="o">)</span> <span
class="o">{</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">c</span><span class="o">);</span>
+ <span class="o">}</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"\n\n"</span><span class="o">);</span>
+ <span class="k">return</span> <span class="n">SUCCESS</span><span
class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="n">File</span><span
class="o">[]</span> <span class="nf">getUpload</span><span class="o">()</span>
<span class="o">{</span>
+ <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploads</span><span class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUpload</span><span class="o">(</span><span
class="n">File</span><span class="o">[]</span> <span
class="n">upload</span><span class="o">)</span> <span class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">uploads</span> <span class="o">=</span> <span
class="n">upload</span><span class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="n">String</span><span
class="o">[]</span> <span class="nf">getUploadFileName</span><span
class="o">()</span> <span class="o">{</span>
+ <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploadFileNames</span><span
class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadFileName</span><span class="o">(</span><span
class="n">String</span><span class="o">[]</span> <span
class="n">uploadFileName</span><span class="o">)</span> <span class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">uploadFileNames</span> <span class="o">=</span> <span
class="n">uploadFileName</span><span class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="n">String</span><span
class="o">[]</span> <span class="nf">getUploadContentType</span><span
class="o">()</span> <span class="o">{</span>
+ <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploadContentTypes</span><span
class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadContentType</span><span class="o">(</span><span
class="n">String</span><span class="o">[]</span> <span
class="n">uploadContentType</span><span class="o">)</span> <span
class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">uploadContentTypes</span> <span class="o">=</span> <span
class="n">uploadContentType</span><span class="o">;</span>
+ <span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
@@ -385,63 +240,69 @@ details see <code
class="highlighter-rouge">struts-fileupload.xml</code> in the
<p><code class="highlighter-rouge">multipleUploadUsingList.jsp</code> Notice
all file input types have the same name.</p>
-<pre><code class="language-jsp"><s:form action="doMultipleUploadUsingList"
method="POST" enctype="multipart/form-data">
- <s:file label="File (1)" name="upload" />
- <s:file label="File (2)" name="upload" />
- <s:file label="FIle (3)" name="upload" />
- <s:submit cssClass="btn btn-primary"/>
-</s:form>
-</code></pre>
+<div class="language-html highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="nt"><s:form</span> <span
class="na">action=</span><span class="s">"doMultipleUploadUsingList"</span>
<span class="na">method=</span><span class="s">"POST"</span> <span
class="na">enctype=</span><span class="s">"multipart/form-data"</span><span
class="nt">></span>
+ <span class="nt"><s:file</span> <span class="na">label=</span><span
class="s">"File (1)"</span> <span class="na">name=</span><span
class="s">"upload"</span> <span class="nt">/></span>
+ <span class="nt"><s:file</span> <span class="na">label=</span><span
class="s">"File (2)"</span> <span class="na">name=</span><span
class="s">"upload"</span> <span class="nt">/></span>
+ <span class="nt"><s:file</span> <span class="na">label=</span><span
class="s">"FIle (3)"</span> <span class="na">name=</span><span
class="s">"upload"</span> <span class="nt">/></span>
+ <span class="nt"><s:submit</span> <span class="na">cssClass=</span><span
class="s">"btn btn-primary"</span><span class="nt">/></span>
+<span class="nt"></s:form></span>
+</code></pre></div></div>
<p><code
class="highlighter-rouge">MultipleFileUploadUsingListAction.java</code></p>
<div class="language-java highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="kd">public</span> <span
class="kd">class</span> <span
class="nc">MultipleFileUploadUsingListAction</span> <span
class="kd">extends</span> <span class="n">ActionSupport</span> <span
class="o">{</span>
- <span class="kd">private</span> <span class="n">List</span><span
class="o"><</span><span class="n">File</span><span class="o">></span>
<span class="n">uploads</span> <span class="o">=</span> <span
class="k">new</span> <span class="n">ArrayList</span><span
class="o"><</span><span class="n">File</span><span class="o">>();</span>
- <span class="kd">private</span> <span class="n">List</span><span
class="o"><</span><span class="n">String</span><span class="o">></span>
<span class="n">uploadFileNames</span> <span class="o">=</span> <span
class="k">new</span> <span class="n">ArrayList</span><span
class="o"><</span><span class="n">String</span><span class="o">>();</span>
- <span class="kd">private</span> <span class="n">List</span><span
class="o"><</span><span class="n">String</span><span class="o">></span>
<span class="n">uploadContentTypes</span> <span class="o">=</span> <span
class="k">new</span> <span class="n">ArrayList</span><span
class="o"><</span><span class="n">String</span><span class="o">>();</span>
-
- <span class="kd">public</span> <span class="n">List</span><span
class="o"><</span><span class="n">File</span><span class="o">></span>
<span class="nf">getUpload</span><span class="o">()</span> <span
class="o">{</span>
- <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploads</span><span class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUpload</span><span class="o">(</span><span
class="n">List</span><span class="o"><</span><span
class="n">File</span><span class="o">></span> <span
class="n">uploads</span><span class="o">)</span> <span class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">uploads</span> <span class="o">=</span> <span
class="n">uploads</span><span class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="n">List</span><span
class="o"><</span><span class="n">String</span><span class="o">></span>
<span class="nf">getUploadFileName</span><span class="o">()</span> <span
class="o">{</span>
- <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploadFileNames</span><span
class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadFileName</span><span class="o">(</span><span
class="n">List</span><span class="o"><</span><span
class="n">String</span><span class="o">></span> <span
class="n">uploadFileNames</span><span class="o">)</span> <span
class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">uploadFileNames</span> <span class="o">=</span> <span
class="n">uploadFileNames</span><span class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="n">List</span><span
class="o"><</span><span class="n">String</span><span class="o">></span>
<span class="nf">getUploadContentType</span><span class="o">()</span> <span
class="o">{</span>
- <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploadContentTypes</span><span
class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadContentType</span><span class="o">(</span><span
class="n">List</span><span class="o"><</span><span
class="n">String</span><span class="o">></span> <span
class="n">contentTypes</span><span class="o">)</span> <span class="o">{</span>
- <span class="k">this</span><span class="o">.</span><span
class="na">uploadContentTypes</span> <span class="o">=</span> <span
class="n">contentTypes</span><span class="o">;</span>
- <span class="o">}</span>
- <span class="kd">public</span> <span class="n">String</span> <span
class="nf">upload</span><span class="o">()</span> <span
class="kd">throws</span> <span class="n">Exception</span> <span
class="o">{</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"\n\n
upload1"</span><span class="o">);</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"files:"</span><span class="o">);</span>
- <span class="k">for</span> <span class="o">(</span><span
class="n">File</span> <span class="n">u</span> <span class="o">:</span> <span
class="n">uploads</span><span class="o">)</span> <span class="o">{</span>
- <span class="n">System</span><span
class="o">.</span><span class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">u</span> <span class="o">+</span>
<span class="s">"\t"</span> <span class="o">+</span> <span
class="n">u</span><span class="o">.</span><span class="na">length</span><span
class="o">());</span>
- <span class="o">}</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"filenames:"</span><span class="o">);</span>
- <span class="k">for</span> <span class="o">(</span><span
class="n">String</span> <span class="n">n</span> <span class="o">:</span> <span
class="n">uploadFileNames</span><span class="o">)</span> <span
class="o">{</span>
- <span class="n">System</span><span
class="o">.</span><span class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">n</span><span class="o">);</span>
- <span class="o">}</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"content
types:"</span><span class="o">);</span>
- <span class="k">for</span> <span class="o">(</span><span
class="n">String</span> <span class="n">c</span> <span class="o">:</span> <span
class="n">uploadContentTypes</span><span class="o">)</span> <span
class="o">{</span>
- <span class="n">System</span><span
class="o">.</span><span class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">c</span><span class="o">);</span>
- <span class="o">}</span>
- <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"\n\n"</span><span class="o">);</span>
- <span class="k">return</span> <span
class="n">SUCCESS</span><span class="o">;</span>
- <span class="o">}</span>
+ <span class="kd">private</span> <span class="n">List</span><span
class="o"><</span><span class="n">File</span><span class="o">></span>
<span class="n">uploads</span> <span class="o">=</span> <span
class="k">new</span> <span class="n">ArrayList</span><span
class="o"><</span><span class="n">File</span><span class="o">>();</span>
+ <span class="kd">private</span> <span class="n">List</span><span
class="o"><</span><span class="n">String</span><span class="o">></span>
<span class="n">uploadFileNames</span> <span class="o">=</span> <span
class="k">new</span> <span class="n">ArrayList</span><span
class="o"><</span><span class="n">String</span><span class="o">>();</span>
+ <span class="kd">private</span> <span class="n">List</span><span
class="o"><</span><span class="n">String</span><span class="o">></span>
<span class="n">uploadContentTypes</span> <span class="o">=</span> <span
class="k">new</span> <span class="n">ArrayList</span><span
class="o"><</span><span class="n">String</span><span class="o">>();</span>
+
+ <span class="kd">public</span> <span class="n">List</span><span
class="o"><</span><span class="n">File</span><span class="o">></span>
<span class="nf">getUpload</span><span class="o">()</span> <span
class="o">{</span>
+ <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploads</span><span class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUpload</span><span class="o">(</span><span
class="n">List</span><span class="o"><</span><span
class="n">File</span><span class="o">></span> <span
class="n">uploads</span><span class="o">)</span> <span class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">uploads</span> <span class="o">=</span> <span
class="n">uploads</span><span class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="n">List</span><span
class="o"><</span><span class="n">String</span><span class="o">></span>
<span class="nf">getUploadFileName</span><span class="o">()</span> <span
class="o">{</span>
+ <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploadFileNames</span><span
class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadFileName</span><span class="o">(</span><span
class="n">List</span><span class="o"><</span><span
class="n">String</span><span class="o">></span> <span
class="n">uploadFileNames</span><span class="o">)</span> <span
class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">uploadFileNames</span> <span class="o">=</span> <span
class="n">uploadFileNames</span><span class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="n">List</span><span
class="o"><</span><span class="n">String</span><span class="o">></span>
<span class="nf">getUploadContentType</span><span class="o">()</span> <span
class="o">{</span>
+ <span class="k">return</span> <span class="k">this</span><span
class="o">.</span><span class="na">uploadContentTypes</span><span
class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="kt">void</span> <span
class="nf">setUploadContentType</span><span class="o">(</span><span
class="n">List</span><span class="o"><</span><span
class="n">String</span><span class="o">></span> <span
class="n">contentTypes</span><span class="o">)</span> <span class="o">{</span>
+ <span class="k">this</span><span class="o">.</span><span
class="na">uploadContentTypes</span> <span class="o">=</span> <span
class="n">contentTypes</span><span class="o">;</span>
+ <span class="o">}</span>
+
+ <span class="kd">public</span> <span class="n">String</span> <span
class="nf">upload</span><span class="o">()</span> <span
class="kd">throws</span> <span class="n">Exception</span> <span
class="o">{</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"\n\n
upload1"</span><span class="o">);</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"files:"</span><span class="o">);</span>
+ <span class="k">for</span> <span class="o">(</span><span
class="n">File</span> <span class="n">u</span> <span class="o">:</span> <span
class="n">uploads</span><span class="o">)</span> <span class="o">{</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">u</span> <span class="o">+</span>
<span class="s">"\t"</span> <span class="o">+</span> <span
class="n">u</span><span class="o">.</span><span class="na">length</span><span
class="o">());</span>
+ <span class="o">}</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"filenames:"</span><span class="o">);</span>
+ <span class="k">for</span> <span class="o">(</span><span
class="n">String</span> <span class="n">n</span> <span class="o">:</span> <span
class="n">uploadFileNames</span><span class="o">)</span> <span
class="o">{</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">n</span><span class="o">);</span>
+ <span class="o">}</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"content
types:"</span><span class="o">);</span>
+ <span class="k">for</span> <span class="o">(</span><span
class="n">String</span> <span class="n">c</span> <span class="o">:</span> <span
class="n">uploadContentTypes</span><span class="o">)</span> <span
class="o">{</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span class="s">"*** "</span>
<span class="o">+</span> <span class="n">c</span><span class="o">);</span>
+ <span class="o">}</span>
+ <span class="n">System</span><span class="o">.</span><span
class="na">out</span><span class="o">.</span><span
class="na">println</span><span class="o">(</span><span
class="s">"\n\n"</span><span class="o">);</span>
+ <span class="k">return</span> <span class="n">SUCCESS</span><span
class="o">;</span>
+ <span class="o">}</span>
<span class="o">}</span>
</code></pre></div></div>
<h2 id="advanced-configuration">Advanced Configuration</h2>
-<p>The Struts 2 <code class="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>
+<p>The Struts 2 <code class="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>
<div class="highlighter-rouge"><div class="highlight"><pre
class="highlight"><code>struts.multipart.parser=jakarta
struts.multipart.saveDir=
@@ -449,29 +310,30 @@ struts.multipart.maxSize=2097152
</code></pre></div></div>
<blockquote>
- <p>Please remember that the <code
class="highlighter-rouge">struts.multipart.maxSize</code> is the size limit of
the whole request, which means when you uploading multiple files,
+ <p>Please remember that the <code
class="highlighter-rouge">struts.multipart.maxSize</code> is the size limit of
the whole request, which means when you uploading multiple files,
the sum of their size must be below the <code
class="highlighter-rouge">struts.multipart.maxSize</code>!</p>
</blockquote>
<p>In order to change theses settings you define a constant in your
applications <code class="highlighter-rouge">struts.xml</code> file like so:</p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="cp"><?xml version="1.0"
encoding="UTF-8"?></span>
-<span class="cp"><!DOCTYPE struts PUBLIC
- "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
- "http://struts.apache.org/dtds/struts-2.0.dtd"></span>
+<span class="cp"><!DOCTYPE struts PUBLIC
+ "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
+ "http://struts.apache.org/dtds/struts-2.0.dtd"></span>
<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.maxSize"</span> <span class="na">value=</span><span
class="s">"1000000"</span><span class="nt">/></span>
...
<span class="nt"></struts></span>
</code></pre></div></div>
-<p>Additionally the <code class="highlighter-rouge">fileUpload</code>
interceptor has settings that can be put in place for individual action
mappings by customizing your interceptor stack.</p>
+<p>Additionally the <code class="highlighter-rouge">fileUpload</code>
interceptor has settings that can be put in place for individual action
mappings by
+customizing your interceptor stack.</p>
<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="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>
@@ -481,25 +343,26 @@ the sum of their size must be below the <code
class="highlighter-rouge">struts.m
<h3 id="file-size-limits">File Size Limits</h3>
-<p>There are two separate file size limits. First is <code
class="highlighter-rouge">struts.multipart.maxSize</code> which comes from the
Struts 2 <code class="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="highlighter-rouge">struts.multipart.maxSize</code> applies to the
combined total, not the individual
-file sizes. The other setting, <code
class="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>There are two separate file size limits. First is <code
class="highlighter-rouge">struts.multipart.maxSize</code> which comes from the
Struts
+2 <code class="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="highlighter-rouge">struts.multipart.maxSize</code> applies to the
combined total, not the individual file
+sizes. The other setting, <code class="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>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="cp"><?xml version="1.0"
encoding="UTF-8"?></span>
-<span class="cp"><!DOCTYPE struts PUBLIC
- "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
- "http://struts.apache.org/dtds/struts-2.0.dtd"></span>
+<span class="cp"><!DOCTYPE struts PUBLIC
+ "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
+ "http://struts.apache.org/dtds/struts-2.0.dtd"></span>
<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.maxSize"</span> <span class="na">value=</span><span
class="s">"1000000"</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>
<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">"maximumSize"</span><span
class="nt">></span>500000<span class="nt"></param></span>
- <span class="nt"></interceptor-ref></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>
@@ -511,14 +374,15 @@ that is too large. Notice the locations of both settings
in the following exampl
<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 type a comma separated
-list of allowedTypes can be specified as a fileUpload interceptor param as
shown in the following example:</p>
+<p>There are two ways to limit the uploaded file type, decoratively and
programmatically. To decoratively limit the file
+type a comma separated list of allowedTypes can be specified as a fileUpload
interceptor param as shown in the following
+example:</p>
<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>image/jpeg,image/gif<span class="nt"></param></span>
- <span class="nt"></interceptor-ref></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>
@@ -526,16 +390,18 @@ list of allowedTypes can be specified as a fileUpload
interceptor param as shown
<span class="nt"></action></span>
</code></pre></div></div>
-<p>When the uploaded file type does not match one of the MIME types specified
a field error will be created as described in the next section
-entitled Error Messages. Programmatically limiting the file type means using
the information passed in to your Action class via
-the <code class="highlighter-rouge">setXContentType(String contentType)</code>
method. The benefit to this type of approach would be that it’s more flexible
and no interceptor
-configuration would be needed if file sizes are keep under 2 megs.</p>
+<p>When the uploaded file type does not match one of the MIME types specified
a field error will be created as described in
+the next section entitled Error Messages. Programmatically limiting the file
type means using the information passed in
+to your Action class via the <code
class="highlighter-rouge">setXContentType(String contentType)</code> method.
The benefit to this type of approach would be
+that it’s more flexible and no interceptor configuration would be needed if
file sizes are keep under 2 megs.</p>
<h3 id="error-messages">Error Messages</h3>
-<p>If an error occurs several field errors will be added assuming that the
action implements <code
class="highlighter-rouge">com.opensymphony.xwork2.ValidationAware</code>
-or extends <code
class="highlighter-rouge">com.opensymphony.xwork2.ActionSupport</code>. These
error messages are based on several i18n values stored in
struts-messages.properties,
-a default i18n file processed for all i18n requests. You can override the text
of these messages by providing text for the following keys:</p>
+<p>If an error occurs several field errors will be added assuming that the
action
+implements <code
class="highlighter-rouge">com.opensymphony.xwork2.ValidationAware</code>
+or extends <code
class="highlighter-rouge">com.opensymphony.xwork2.ActionSupport</code>. These
error messages are based on several i18n values stored in
+struts-messages.properties, a default i18n file processed for all i18n
requests. You can override the text of these
+messages by providing text for the following keys:</p>
<table>
<thead>
@@ -574,22 +440,25 @@ a default i18n file processed for all i18n requests. You
can override the text o
<h3 id="temporary-directories">Temporary Directories</h3>
-<p>All uploaded files are saved to a temporary directory by the framework
before being passed in to an Action. Depending on the allowed file
-sizes it may be necessary to have the framework store these temporary files in
an alternate location. To do this change <code
class="highlighter-rouge">struts.multipart.saveDir</code>
-to the directory where the uploaded files will be placed. If this property is
not set it defaults to <code
class="highlighter-rouge">javax.servlet.context.tempdir</code>.
-Keep in mind that on some operating systems, like Solaris, <code
class="highlighter-rouge">/tmp</code> is memory based and files stored in that
directory would consume
-an amount of RAM approximately equal to the size of the uploaded file.</p>
+<p>All uploaded files are saved to a temporary directory by the framework
before being passed in to an Action. Depending on
+the allowed file sizes it may be necessary to have the framework store these
temporary files in an alternate location.
+To do this change <code
class="highlighter-rouge">struts.multipart.saveDir</code>
+to the directory where the uploaded files will be placed. If this property is
not set it defaults
+to <code class="highlighter-rouge">javax.servlet.context.tempdir</code>. Keep
in mind that on some operating systems, like Solaris, <code
class="highlighter-rouge">/tmp</code> is memory based
+and files stored in that directory would consume an amount of RAM
approximately equal to the size of the uploaded file.</p>
<h3 id="alternate-libraries">Alternate Libraries</h3>
-<p>The <code class="highlighter-rouge">struts.multipart.parser</code> used by
the fileUpload interceptor to handle HTTP POST requests, encoded using the
MIME-type <code class="highlighter-rouge">multipart/form-data</code>,
-can be changed out. Currently there are two choices, jakarta and pell. The
jakarta parser is a standard part of the Struts 2 framework needing
-only its required libraries added to a project. The pell parser uses Jason
Pell’s multipart parser instead of the Commons-FileUpload library.
-The pell parser is a Struts 2 plugin, for more details see: <a
href="../plugins/pell/">Pell multipart plugin</a>. There was a third
alternative, cos, but it was removed
-due to licensing incompatibilities.</p>
+<p>The <code class="highlighter-rouge">struts.multipart.parser</code> used by
the fileUpload interceptor to handle HTTP POST requests, encoded using the
+MIME-type <code class="highlighter-rouge">multipart/form-data</code>, can be
changed out. Currently there are two choices, jakarta and pell. The jakarta
+parser is a standard part of the Struts 2 framework needing only its required
libraries added to a project. The pell
+parser uses Jason Pell’s multipart parser instead of the Commons-FileUpload
library. The pell parser is a Struts 2
+plugin, for more details see: <a href="../plugins/pell/">Pell multipart
plugin</a>. There was a third alternative, cos, but it was
+removed due to licensing incompatibilities.</p>
-<p>As from Struts version 2.3.18 a new implementation of <code
class="highlighter-rouge">MultiPartRequest</code> was added - <code
class="highlighter-rouge">JakartaStreamMultiPartRequest</code>. It can be used
to handle
-large files, see <a
href="https://issues.apache.org/jira/browse/WW-3025";>WW-3025</a> for more
details, but you can simple set</p>
+<p>As from Struts version 2.3.18 a new implementation of <code
class="highlighter-rouge">MultiPartRequest</code> was added - <code
class="highlighter-rouge">JakartaStreamMultiPartRequest</code>. It
+can be used to handle large files, see <a
href="https://issues.apache.org/jira/browse/WW-3025";>WW-3025</a> for more
details, but
+you can simple set</p>
<div class="highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><constant name="struts.multipart.parser"
value="jakarta-stream" />
</code></pre></div></div>
@@ -598,63 +467,23 @@ large files, see <a
href="https://issues.apache.org/jira/browse/WW-3025";>WW-302
<h3 id="request-validation">Request validation</h3>
-<p>The <code class="highlighter-rouge">struts.multipart.validationRegex</code>
is used to define a RegEx to be used to validate if the incoming request is a
multipart request.
-The request must use the <code class="highlighter-rouge">POST</code> method
and match the RegEx, by default the RegEx is defined as follow:</p>
+<p>The <code class="highlighter-rouge">struts.multipart.validationRegex</code>
is used to define a RegEx to be used to validate if the incoming request is a
+multipart request. The request must use the <code
class="highlighter-rouge">POST</code> method and match the RegEx, by default
the RegEx is defined as
+follow:</p>
-<div class="highlighter-rouge"><div class="highlight"><pre
class="highlight"><code>^multipart\\/form-data(; boundary=[a-zA-Z0-9]{1,70})?
+<div class="highlighter-rouge"><div class="highlight"><pre
class="highlight"><code>^multipart/form-data(?:\\s*;\\s*boundary=[0-9a-zA-Z'()+_,\\-./:=?]{1,70})?(?:\\s*;\\s*charset=[a-zA-Z\\-0-9]{3,14})?
</code></pre></div></div>
-<p>Please read <a
href="https://www.w3.org/Protocols/rfc1341/7\_2\_Multipart";>RFC1341</a> the
<strong>Multipart section</strong> for more details, existing
-Struts <code class="highlighter-rouge">Multipart</code> parsers support only
<code class="highlighter-rouge">multipart/form-data</code> content type. This
option is available since Struts 2.3.11.</p>
+<p>Please read <a
href="https://www.w3.org/Protocols/rfc1341/7\_2\_Multipart";>RFC1341</a> the
<strong>Multipart section</strong> for more details,
+existing Struts <code class="highlighter-rouge">Multipart</code> parsers
support only <code class="highlighter-rouge">multipart/form-data</code> content
type. This option is available since
+Struts 2.3.11.</p>
<h3 id="disabling-file-upload-support">Disabling file upload support</h3>
-<p>You can alternatively disable the whole file upload mechanism defining a
constant in <code class="highlighter-rouge">struts.xml</code>:</p>
+<p>You can alternatively disable the whole file upload mechanism defining a
constant in <code class="highlighter-rouge">struts.xml</code>:</p>
<div class="language-xml highlighter-rouge"><div class="highlight"><pre
class="highlight"><code><span class="nt"><constant</span> <span
class="na">name=</span><span class="s">"struts.multipart.enabled"</span> <span
class="na">value=</span><span class="s">"false"</span><span
class="nt">/></span>
</code></pre></div></div>
-<p>With this constant in place, Struts will ignore a <code
class="highlighter-rouge">Content-Type</code> header and will treat each
request as an ordinary http request.
-This option is available since Struts 2.3.11. </p>
-
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+<p>With this constant in place, Struts will ignore a <code
class="highlighter-rouge">Content-Type</code> header and will treat each
request as an ordinary http
+request. This option is available since Struts 2.3.11.</p>
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