| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| <meta charset="UTF-8"/> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"/> |
| <meta name="Date-Revision-yyyymmdd" content="20140918"/> |
| <meta http-equiv="Content-Language" content="en"/> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> |
| |
| <title>ObjectFactory</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"> |
| |
| <script src="//code.jquery.com/jquery-1.11.0.min.js"></script> |
| <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> |
| |
| <header> |
| <nav> |
| <div role="navigation" class="navbar navbar-default navbar-fixed-top"> |
| <div class="container"> |
| <div class="navbar-header"> |
| <button type="button" data-toggle="collapse" data-target="#struts-menu" class="navbar-toggle"> |
| Menu |
| <span class="sr-only">Toggle navigation</span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| <span class="icon-bar"></span> |
| </button> |
| <a href="/index.html" class="navbar-brand logo"><img src="/img/struts-logo.svg"></a> |
| </div> |
| <div id="struts-menu" class="navbar-collapse collapse"> |
| <ul class="nav navbar-nav"> |
| <li class="dropdown"> |
| <a data-toggle="dropdown" href="#" class="dropdown-toggle"> |
| Home<b class="caret"></b> |
| </a> |
| <ul class="dropdown-menu"> |
| <li><a href="/index.html">Welcome</a></li> |
| <li><a href="/download.cgi">Download</a></li> |
| <li><a href="/releases.html">Releases</a></li> |
| <li><a href="/announce-2021.html">Announcements</a></li> |
| <li><a href="http://www.apache.org/licenses/">License</a></li> |
| <li><a href="https://www.apache.org/foundation/thanks.html">Thanks!</a></li> |
| <li><a href="https://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li> |
| </ul> |
| </li> |
| <li class="dropdown"> |
| <a data-toggle="dropdown" href="#" class="dropdown-toggle"> |
| Support<b class="caret"></b> |
| </a> |
| <ul class="dropdown-menu"> |
| <li><a href="/mail.html">User Mailing List</a></li> |
| <li><a href="https://issues.apache.org/jira/browse/WW">Issue Tracker</a></li> |
| <li><a href="/security.html">Reporting Security Issues</a></li> |
| <li class="divider"></li> |
| <li><a href="https://cwiki.apache.org/confluence/display/WW/Migration+Guide">Version Notes</a></li> |
| <li><a href="https://cwiki.apache.org/confluence/display/WW/Security+Bulletins">Security Bulletins</a></li> |
| <li class="divider"></li> |
| <li><a href="/maven/project-info.html">Maven Project Info</a></li> |
| <li><a href="/maven/struts2-core/dependencies.html">Struts Core Dependencies</a></li> |
| <li><a href="/maven/struts2-plugins/modules.html">Plugin Dependencies</a></li> |
| </ul> |
| </li> |
| <li class="dropdown"> |
| <a data-toggle="dropdown" href="#" class="dropdown-toggle"> |
| Documentation<b class="caret"></b> |
| </a> |
| <ul class="dropdown-menu"> |
| <li><a href="/birdseye.html">Birds Eye</a></li> |
| <li><a href="/primer.html">Key Technologies</a></li> |
| <li><a href="/kickstart.html">Kickstart FAQ</a></li> |
| <li><a href="https://cwiki.apache.org/confluence/display/WW/Home">Wiki</a></li> |
| <li class="divider"></li> |
| <li><a href="/getting-started/">Getting Started</a></li> |
| <li><a href="/security/">Security Guide</a></li> |
| <li><a href="/core-developers/">Core Developers Guide</a></li> |
| <li><a href="/tag-developers/">Tag Developers Guide</a></li> |
| <li><a href="/maven-archetypes/">Maven Archetypes</a></li> |
| <li><a href="/plugins/">Plugins</a></li> |
| <li><a href="/maven/struts2-core/apidocs/index.html">Struts Core API</a></li> |
| <li><a href="/tag-developers/tag-reference.html">Tag reference</a></li> |
| <li><a href="https://cwiki.apache.org/confluence/display/WW/FAQs">FAQs</a></li> |
| <li><a href="http://cwiki.apache.org/S2PLUGINS/home.html">Plugin registry</a></li> |
| </ul> |
| </li> |
| <li class="dropdown"> |
| <a data-toggle="dropdown" href="#" class="dropdown-toggle"> |
| Contributing<b class="caret"></b> |
| </a> |
| <ul class="dropdown-menu"> |
| <li><a href="/youatstruts.html">You at Struts</a></li> |
| <li><a href="/helping.html">How to Help FAQ</a></li> |
| <li><a href="/dev-mail.html">Development Lists</a></li> |
| <li><a href="/contributors/">Contributors Guide</a></li> |
| <li class="divider"></li> |
| <li><a href="/submitting-patches.html">Submitting patches</a></li> |
| <li><a href="/builds.html">Source Code and Builds</a></li> |
| <li><a href="/coding-standards.html">Coding standards</a></li> |
| <li><a href="https://cwiki.apache.org/confluence/display/WW/Contributors+Guide">Contributors Guide</a></li> |
| <li class="divider"></li> |
| <li><a href="/release-guidelines.html">Release Guidelines</a></li> |
| <li><a href="/bylaws.html">PMC Charter</a></li> |
| <li><a href="/volunteers.html">Volunteers</a></li> |
| <li><a href="https://gitbox.apache.org/repos/asf?p=struts.git">Source Repository</a></li> |
| <li><a href="/updating-website.html">Updating the website</a></li> |
| </ul> |
| </li> |
| <li class="apache"><a href="http://www.apache.org/"><img src="/img/apache.png"></a></li> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </nav> |
| </header> |
| |
| |
| <article class="container"> |
| <section class="col-md-12"> |
| <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/object-factory.md" title="Edit this page on GitHub">Edit on GitHub</a> |
| <h1 id="objectfactory">ObjectFactory</h1> |
| |
| <p>All objects created by the framework are instantiated by the ObjectFactory. The ObjectFactory provides the means of integrating the framework with IoC containers like Spring, Pico, Plexus, and so forth.</p> |
| |
| <h2 id="customize">Customize</h2> |
| |
| <h3 id="extend-objectfactory">Extend ObjectFactory</h3> |
| |
| <p>Customized ObjectFactory must extend ObjectFactory or any of its descendants and have a default, no-argument constructor.</p> |
| |
| <table> |
| <tbody> |
| <tr> |
| </tr> |
| </tbody> |
| </table> |
| |
| <p>To register a customized ObjectFactory, add or edit an entry in <code class="highlighter-rouge">struts.properties</code></p> |
| |
| <div class="highlighter-rouge"><div class="highlight"><pre class="highlight"><code> struts.objectFactory=foo.bar.MyCustomObjectFactory |
| |
| </code></pre></div></div> |
| |
| <p>where foo.bar.MyCustomObjectFactory is the custom object factory.</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">MyObjectFactory</span> <span class="kd">extends</span> <span class="n">ObjectFactory</span> <span class="o">{</span> |
| <span class="o">.....</span> |
| <span class="o">}</span> |
| |
| </code></pre></div></div> |
| |
| <h3 id="define-dedicated-factory">Define dedicated factory</h3> |
| |
| <p>If you want to just extend one part of ObjectFactory, ie. to change how <a href="result-types.html">Result Types</a> are build, you can implement <code class="highlighter-rouge">ResultFactory</code> interface and register it with dedicated name, see <em>Extension Points</em> for more details. Original ObjectFactory will use these dedicated factories to do the work. It’s already done this way - the original functionality of ObjectFactory was extracted to separated classes which implements the interfaces below. Check the source of ObjectFactory to see more details. All these factories are available as from version 2.3.16.</p> |
| |
| <p>List of Factory interfaces:</p> |
| |
| <ul> |
| <li> |
| <p><code class="highlighter-rouge">ResultFactory</code> - dedicated interfaces used by to create <a href="result-types.html">Result Types</a></p> |
| |
| <ul> |
| <li><code class="highlighter-rouge">StrutsResultFactory</code> it’s internal implementation which checks if Result implements <code class="highlighter-rouge">ParamNameAwareResult</code> interface to restrict names of parameters set on the instance of Result, see <a href="result-types.html">Result Types</a> for more info.</li> |
| </ul> |
| </li> |
| <li> |
| <p><code class="highlighter-rouge">ActionFactory</code> - dedicated interface used by to actions</p> |
| </li> |
| <li> |
| <p><code class="highlighter-rouge">InterceptorFactory</code> - dedicated interface used by to create interceptors</p> |
| </li> |
| <li> |
| <p><code class="highlighter-rouge">ValidatorFactory</code> - dedicated interface used by to create validators</p> |
| </li> |
| <li> |
| <p><code class="highlighter-rouge">ConverterFactory</code> - dedicated interface used by to create instances of <em>TypeConverter</em></p> |
| </li> |
| <li> |
| <p><code class="highlighter-rouge">UnknownHandlerFactory</code> - dedicated interfaces used by to create instances of <a href="unknown-handlers.html">Unknown Handlers</a> (as from version 2.3.18)</p> |
| </li> |
| </ul> |
| |
| </section> |
| </article> |
| |
| |
| <footer class="container"> |
| <div class="col-md-12"> |
| Copyright © 2000-2018 <a href="http://www.apache.org/">The Apache Software Foundation </a>. |
| All Rights Reserved. |
| </div> |
| <div class="col-md-12"> |
| Apache Struts, Struts, Apache, the Apache feather logo, and the Apache Struts project logos are |
| trademarks of The Apache Software Foundation. |
| </div> |
| <div class="col-md-12">Logo and website design donated by <a href="https://softwaremill.com/">SoftwareMill</a>.</div> |
| </footer> |
| |
| <script>!function (d, s, id) { |
| var js, fjs = d.getElementsByTagName(s)[0]; |
| if (!d.getElementById(id)) { |
| js = d.createElement(s); |
| js.id = id; |
| js.src = "//platform.twitter.com/widgets.js"; |
| fjs.parentNode.insertBefore(js, fjs); |
| } |
| }(document, "script", "twitter-wjs");</script> |
| <script src="https://apis.google.com/js/platform.js" async="async" defer="defer"></script> |
| |
| <div id="fb-root"></div> |
| |
| <script>(function (d, s, id) { |
| var js, fjs = d.getElementsByTagName(s)[0]; |
| if (d.getElementById(id)) return; |
| js = d.createElement(s); |
| js.id = id; |
| js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1"; |
| fjs.parentNode.insertBefore(js, fjs); |
| }(document, 'script', 'facebook-jssdk'));</script> |
| |
| |
| </body> |
| </html> |
