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| <title>Jetty XML Usage</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="reference-section.html" title="Chapter 34. Reference Section"><link rel="next" href="jetty-xml-config.html" title="jetty.xml"><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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| </p></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="jetty-xml-usage"></a>Jetty XML Usage</h2></div></div></div><div class="toc"><dl><dt><span class="section"><a href="jetty-xml-usage.html#using-jettyxml">Using <code class="filename">jetty.xml</code></a></span></dt><dt><span class="section"><a href="jetty-xml-usage.html#using-multiple-configuration-files">Using Multiple Configuration Files</a></span></dt><dt><span class="section"><a href="jetty-xml-usage.html#setting-parameters-in-configuration-files">Setting Parameters in Configuration Files</a></span></dt></dl></div><p>Jetty provides an XML-based configuration. It is grounded in Java's | |
| Reflection API. Classes in the java.lang.reflect represent Java methods and | |
| classes, such that you can instantiate objects and invoke their methods | |
| based on their names and argument types. Behind the scenes, Jetty's XML | |
| config parser translates the XML elements and attributes into Reflection | |
| calls.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="using-jettyxml"></a>Using <code class="filename">jetty.xml</code></h3></div></div></div><p>To use <code class="filename">jetty.xml</code>, specify it as a configuration | |
| file when running Jetty.</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: java;toolbar: false"> | |
| <![CDATA[ java -jar start.jar etc/jetty.xml ]]> | |
| </script></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="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title"><i class="icon-asterisk"></i> Note</h3><p> If you start Jetty without specifying a configuration file, Jetty | |
| automatically locates and uses the default installation | |
| <code class="filename">jetty.xml</code> file. Therefore <code class="code">java -jar | |
| start.jar</code> is equivalent to <code class="code">java -jar start.jar | |
| etc/jetty.xml</code> . </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="using-multiple-configuration-files"></a>Using Multiple Configuration Files</h3></div></div></div><p>You are not limited to one configuration file; you can use multiple | |
| configuration files when running Jetty, and Jetty will configure the | |
| appropriate server instance. The ID of the server in the <code class="code"> | |
| <Configure></code> tag specifies the instance you want to configure. | |
| Each server ID in a configuration file creates a new server instance | |
| within the same JVM. If you use the same ID across multiple configuration | |
| files, those configurations are all applied to the same server.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="setting-parameters-in-configuration-files"></a>Setting Parameters in Configuration Files</h3></div></div></div><p>You can set parameters in configuration files either with system | |
| properties (using <code class="code"> <SystemProperty></code>) or properties | |
| files (using <code class="code"><Property></code>) passed via the command line. | |
| For example, this code in <code class="code">jetty.xml</code> allows the port to be | |
| defined on the command line, falling back onto <code class="varname">8080</code>if | |
| the port is not specified:</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: xml;toolbar: false"> | |
| <![CDATA[ <Set name="port"><SystemProperty name="jetty.http.port" default="8080"/></Set> ]]> | |
| </script></div><p>Then you modify the port while running Jetty by using this | |
| command:</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: java;toolbar: false"> | |
| <![CDATA[ java -Djetty.http.port=8888 -jar start.jar etc/jetty.xml ]]> | |
| </script></div><p>An example of defining both system properties and properties files | |
| from the command line:</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: java;toolbar: false"> | |
| <![CDATA[ java -Djetty.http.port=8888 -jar start.jar myjetty.properties etc/jetty.xml etc/other.xml ]]> | |
| </script></div></div></div><script type="text/javascript"> | |
| SyntaxHighlighter.all() | |
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