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| <title>Jetty override-web.xml</title><link rel="stylesheet" type="text/css" href="css/docbook.css"><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"><meta name="keywords" content="jetty, servlet, servlet-api, cometd, http, websocket, eclipse, maven, java, server, software"><link rel="home" href="index.html" title="Jetty : The Definitive Reference"><link rel="up" href="reference-section.html" title="Chapter 34. Reference Section"><link rel="prev" href="webdefault-xml.html" title="webdefault.xml"><link rel="next" href="troubleshooting.html" title="Chapter 35. Troubleshooting"><link xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" rel="shortcut icon" href="images/favicon.ico"><script type="text/javascript" src="js/shCore.js"></script><script type="text/javascript" src="js/shBrushJava.js"></script><script type="text/javascript" src="js/shBrushXml.js"></script><script type="text/javascript" src="js/shBrushBash.js"></script><script type="text/javascript" src="js/shBrushJScript.js"></script><script type="text/javascript" src="js/shBrushSql.js"></script><script type="text/javascript" src="js/shBrushProperties.js"></script><script type="text/javascript" src="js/shBrushPlain.js"></script><link type="text/css" rel="stylesheet" href="css/shCore.css"><link type="text/css" rel="stylesheet" href="css/shThemeEclipse.css"><link type="text/css" rel="stylesheet" href="css/font-awesome.min.css"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><table xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times"><tr><td style="width: 25%"><a href="http://www.eclipse.org/jetty"><img src="images/jetty-header-logo.png" alt="Jetty Logo"></a><br><span style="font-size: small"> |
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| </script><gcse:search></gcse:search></td></tr></table><div xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Jetty <code class="filename">override-web.xml</code></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="webdefault-xml.html"><i class="icon-chevron-left"></i> Previous</a> </td><th width="60%" align="center">Chapter 34. Reference Section<br><a accesskey="p" href="index.html"><i class="icon-home"></i> Home</a></th><td width="20%" align="right"> <a accesskey="n" href="troubleshooting.html">Next <i class="icon-chevron-right"></i></a></td></tr></table><hr></div><div xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times" class="jetty-callout"><h5 class="callout"><a href="http://www.webtide.com/">Contact the core Jetty developers at |
| <span class="website">www.webtide.com</span></a></h5><p> |
| private support for your internal/customer projects ... custom extensions and distributions ... versioned snapshots for indefinite support ... |
| scalability guidance for your apps and Ajax/Comet projects ... development services from 1 day to full product delivery |
| </p></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="override-web-xml"></a>Jetty <code class="filename">override-web.xml</code></h2></div></div></div><div class="toc"><dl><dt><span class="section"><a href="override-web-xml.html#using-override-web-xml">Using <code class="filename">override-web.xml</code></a></span></dt><dt><span class="section"><a href="override-web-xml.html#override-using-jetty-maven-plugin">Using the Jetty Maven Plugin</a></span></dt><dt><span class="section"><a href="override-web-xml.html#override-web-xml-additional-resources">Additional Resources</a></span></dt></dl></div><p>To deploy a web application or WAR into different environments, most |
| likely you will need to customize the webapp for compatibility with each |
| environment. The challenge is to do so without changing the webapp itself. |
| You can use a <code class="filename">jetty.xml</code> file for some of this work |
| since it is not part of the webapp. But there are some changes that |
| <code class="filename">jetty.xml</code> cannot accomplish, for example, modifications |
| to servlet init-params and context init-params. Using |
| <code class="filename">webdefault.xml</code> is not an option because Jetty applies |
| <code class="filename"> webdefault.xml</code> to a web application |
| <span class="emphasis"><em>before</em></span> the application's own <code class="filename"> |
| WEB-INF/web.xml</code>, which means that it cannot override values |
| inside the webapp's <code class="filename"> web.xml</code>.</p><p>The solution is <code class="filename">override-web.xml</code>. It is a |
| <code class="filename">web.xml</code> file that Jetty applies to a web application |
| <span class="emphasis"><em>after</em></span> the application's own |
| <code class="filename">WEB-INF/web.xml</code>, which means that it can override |
| values or add new elements. You define it per-webapp, using the <a class="xref" href="reference-section.html#jetty-xml-syntax" title="Jetty XML Syntax">Jetty XML Syntax</a>.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="using-override-web-xml"></a>Using <code class="filename">override-web.xml</code></h3></div></div></div><p>You can specify the <code class="filename">override-web.xml</code> to use for |
| an individual web application, in that webapp's <a class="xref" href="jetty-web-xml-config.html" title="jetty-web.xml"><code class="filename">jetty-web.xml</code></a>.</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: xml;toolbar: false"> |
| <![CDATA[ |
| |
| <Configure class="org.eclipse.jetty.webapp.WebAppContext"> |
| ... |
| <!-- Set up the path to the custom override descriptor, |
| relative to your $(jetty.home) directory or to the current directory --> |
| <Set name="overrideDescriptor"><SystemProperty name="jetty.home" default="."/>/my/path/to/override-web.xml</Set> |
| ... |
| </Configure> |
| |
| ]]> |
| </script></div><p>The equivalent in code is:</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: java;toolbar: false"> |
| <![CDATA[ |
| |
| import org.eclipse.jetty.webapp.WebAppContext; |
| |
| ... |
| |
| WebAppContext wac = new WebAppContext(); |
| ... |
| //Set the path to the override descriptor, based on your $(jetty.home) directory |
| wac.setOverrideDescriptor(System.getProperty("jetty.home")+"/my/path/to/override-web.xml"); |
| ... |
| |
| ]]> |
| </script></div><p>Alternatively, use the classloader (<a class="xref" href="jetty-classloading.html" title="Jetty Classloading">Jetty Classloading</a>) to get the path to the override descriptor |
| as a resource.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="override-using-jetty-maven-plugin"></a>Using the Jetty Maven Plugin</h3></div></div></div><p>Use the <code class="code"><overrideDescriptor></code> tag as |
| follows:</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: xml;toolbar: false"> |
| <![CDATA[ |
| |
| <project> |
| ... |
| <plugins> |
| <plugin> |
| ... |
| <artifactId>jetty-maven-plugin</artifactId> |
| <configuration> |
| <webAppConfig> |
| ... |
| <overrideDescriptor>src/main/resources/override-web.xml</overrideDescriptor> |
| </webAppConfig> |
| </configuration> |
| </plugin> |
| ... |
| </plugins> |
| ... |
| </project> |
| |
| ]]> |
| </script></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="override-web-xml-additional-resources"></a>Additional Resources</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p><a class="xref" href="webdefault-xml.html" title="webdefault.xml"><code class="filename">webdefault.xml</code></a> –Information for this |
| <code class="filename">web.xml</code> -formatted file, applied before the |
| webapp's <code class="filename">web.xml</code> webapp.</p></li><li class="listitem"><p><a class="xref" href="jetty-xml-config.html" title="jetty.xml"><code class="filename">jetty.xml</code></a> –Reference for |
| <code class="filename">jetty.xml</code> files</p></li></ul></div></div></div><script type="text/javascript"> |
| SyntaxHighlighter.all() |
| </script><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="webdefault-xml.html"><i class="icon-chevron-left"></i> Previous</a> </td><td width="20%" align="center"><a accesskey="u" href="reference-section.html"><i class="icon-chevron-up"></i> Top</a></td><td width="40%" align="right"> <a accesskey="n" href="troubleshooting.html">Next <i class="icon-chevron-right"></i></a></td></tr><tr><td width="40%" align="left" valign="top"><code class="filename">webdefault.xml</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html"><i class="icon-home"></i> Home</a></td><td width="40%" align="right" valign="top"> Chapter 35. Troubleshooting</td></tr></table></div><p xmlns:jfetch="java:org.eclipse.jetty.xslt.tools.JavaSourceFetchExtension" xmlns:fetch="java:org.eclipse.jetty.xslt.tools.SourceFetchExtension" xmlns:d="http://docbook.org/ns/docbook" xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0" xmlns:xslthl="http://xslthl.sf.net" xmlns:gcse="http://www.google.com" xmlns:date="http://exslt.org/dates-and-times"><div class="jetty-callout"> |
| See an error or something missing? |
| <span class="callout"><a href="http://github.com/jetty-project/jetty-documentation">Contribute to this documentation at |
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