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| <title>Rewrite Handler</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, spdy, websocket, eclipse, maven, java, server, software"><link rel="home" href="index.html" title="Jetty : The Definitive Reference"><link rel="up" href="advanced-extras.html" title="Chapter 18. Provided Servlets, Filters, and Handlers"><link rel="prev" href="error-handler.html" title="Error Handler"><link rel="next" href="runner.html" title="Chapter 19. Jetty Runner"><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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| <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="rewrite-handler"></a>Rewrite Handler</h2></div></div></div><div class="toc"><dl><dt><span class="section"><a href="rewrite-handler.html#rewrite-handler-metadata">Info</a></span></dt><dt><span class="section"><a href="rewrite-handler.html#d0e14114">Usage</a></span></dt><dt><span class="section"><a href="rewrite-handler.html#rewrite-rules">Rules</a></span></dt></dl></div><p>The RewriteHandler matches a request against a set of rules, and |
| modifies the request accordingly for any rules that match. The most common |
| use is to rewrite request URIs, but it is capable of much more: rules can |
| also be configured to redirect the response, set a cookie or response code |
| on the response, modify the header, etc.</p><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="rewrite-handler-metadata"></a>Info</h3></div></div></div><p> |
| </p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem"><p>Classname: |
| org.eclipse.jetty.rewrite.handler.RewriteHandler</p></li><li class="listitem"><p>Maven artifact: org.eclipse.jetty:jetty-rewrite</p></li><li class="listitem"><p>Javadoc: <a class="link" href="???" target="_top">http://download.eclipse.org/jetty/stable-9/apidocs/org/eclipse/jetty/rewrite/handler/RewriteHandler.html</a></p></li><li class="listitem"><p>Xref: <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/RewriteHandler.html" target="_top">http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/RewriteHandler.html</a></p></li></ul></div><p> |
| </p><p>The standard Jetty distribution bundle contains the |
| <code class="literal">jetty-rewrite</code> <a class="link" href="startup-modules.html" title="Managing Startup Modules">module</a>, so all you need to do is to |
| enable it using one of the <a class="link" href="start-jar.html" title="Using start.jar">module |
| commands</a>, eg:</p><div class="screenexample"><pre class="screen"> |
| |
| $ java -jar start.jar --add-to-startd=rewrite |
| </pre></div></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 are running the standard Jetty distribution with the sample |
| test webapp, there will be a demo of the rewrite module at |
| http://localhost:8080/test/rewrite/</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="d0e14114"></a>Usage</h3></div></div></div><p>The rewrite module enables the following jetty xml config file on |
| the execution path:</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: xml;toolbar: false"> |
| <![CDATA[<?xml version="1.0"?> |
| <!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "http://www.eclipse.org/jetty/configure_9_0.dtd"> |
| |
| <!-- =============================================================== --> |
| <!-- Mixin the RewriteHandler --> |
| <!-- =============================================================== --> |
| |
| |
| <Configure id="Server" class="org.eclipse.jetty.server.Server"> |
| |
| <!-- =========================================================== --> |
| <!-- configure rewrite handler --> |
| <!-- =========================================================== --> |
| <Get id="oldhandler" name="handler"/> |
| |
| <Set name="handler"> |
| <New id="Rewrite" class="org.eclipse.jetty.rewrite.handler.RewriteHandler"> |
| <Set name="handler"><Ref refid="oldhandler"/></Set> |
| <Set name="rewriteRequestURI"><Property name="rewrite.rewriteRequestURI" default="true"/></Set> |
| <Set name="rewritePathInfo"><Property name="rewrite.rewritePathInfo" default="false"/></Set> |
| <Set name="originalPathAttribute"><Property name="rewrite.originalPathAttribute" default="requestedPath"/></Set> |
| </New> |
| </Set> |
| |
| <!-- example rule --> |
| <!-- |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.HeaderPatternRule"> |
| <Set name="pattern">/favicon.ico</Set> |
| <Set name="name">Cache-Control</Set> |
| <Set name="value">Max-Age=3600,public</Set> |
| <Set name="terminating">true</Set> |
| </New> |
| </Arg> |
| </Call> |
| --> |
| |
| <!-- for example rules see jetty-demo.xml --> |
| |
| </Configure> |
| ]]> |
| </script></div><p>As the commented out code shows, you configure the RewriteHandler by |
| adding various rules. </p><p>There is an example of <a class="link" href="rewrite-handler.html#rewrite-rules" title="Rules">rules</a> |
| configuration in the standard distribution in the |
| <code class="filename">demo-base/etc/demo-rewrite-rules.xml</code> file:</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: xml;toolbar: false"> |
| <![CDATA[<?xml version="1.0"?> |
| <!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN" "http://www.eclipse.org/jetty/configure_9_0.dtd"> |
| |
| <!-- =============================================================== --> |
| <!-- Configure the demos --> |
| <!-- =============================================================== --> |
| <Configure id="Server" class="org.eclipse.jetty.server.Server"> |
| |
| <!-- ============================================================= --> |
| <!-- Add rewrite rules --> |
| <!-- ============================================================= --> |
| <Ref refid="Rewrite"> |
| <!-- Add rule to protect against IE ssl bug --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.MsieSslRule"/> |
| </Arg> |
| </Call> |
| |
| <!-- protect favicon handling --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.HeaderPatternRule"> |
| <Set name="pattern">/favicon.ico</Set> |
| <Set name="name">Cache-Control</Set> |
| <Set name="value">Max-Age=3600,public</Set> |
| <Set name="terminating">true</Set> |
| </New> |
| </Arg> |
| </Call> |
| |
| <!-- redirect from the welcome page to a specific page --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.RewritePatternRule"> |
| <Set name="pattern">/test/rewrite/</Set> |
| <Set name="replacement">/test/rewrite/info.html</Set> |
| </New> |
| </Arg> |
| </Call> |
| |
| <!-- replace the entire request URI --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.RewritePatternRule"> |
| <Set name="pattern">/test/some/old/context</Set> |
| <Set name="replacement">/test/rewritten/newcontext</Set> |
| </New> |
| </Arg> |
| </Call> |
| |
| <!-- replace the beginning of the request URI --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.RewritePatternRule"> |
| <Set name="pattern">/test/rewrite/for/*</Set> |
| <Set name="replacement">/test/rewritten/</Set> |
| </New> |
| </Arg> |
| </Call> |
| |
| <!-- reverse the order of the path sections --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.RewriteRegexRule"> |
| <Set name="regex">(.*?)/reverse/([^/]*)/(.*)</Set> |
| <Set name="replacement">$1/reverse/$3/$2</Set> |
| </New> |
| </Arg> |
| </Call> |
| |
| <!-- add a cookie to each path visited --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.CookiePatternRule"> |
| <Set name="pattern">/*</Set> |
| <Set name="name">visited</Set> |
| <Set name="value">yes</Set> |
| </New> |
| </Arg> |
| </Call> |
| |
| <!-- actual redirect, instead of internal rewrite --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.RedirectPatternRule"> |
| <Set name="pattern">/test/redirect/*</Set> |
| <Set name="location">/test/redirected</Set> |
| </New> |
| </Arg> |
| </Call> |
| |
| <!-- add a response rule --> |
| <Call name="addRule"> |
| <Arg> |
| <New class="org.eclipse.jetty.rewrite.handler.ResponsePatternRule"> |
| <Set name="pattern">/400Error</Set> |
| <Set name="code">400</Set> |
| <Set name="reason">ResponsePatternRule Demo</Set> |
| </New> |
| </Arg> |
| </Call> |
| </Ref> |
| </Configure> |
| ]]> |
| </script></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="d0e14138"></a>Embedded Example</h4></div></div></div><p>This is an example for embedded Jetty, which does something |
| similar to the configuration file example above:</p><div class="informalexample"><script type="syntaxhighlighter" class="brush: java;toolbar: false"> |
| <![CDATA[ |
| |
| Server server = new Server(); |
| |
| RewriteHandler rewrite = new RewriteHandler(); |
| rewrite.setRewriteRequestURI(true); |
| rewrite.setRewritePathInfo(false); |
| rewrite.originalPathAttribute("requestedPath"); |
| |
| RedirectPatternRule redirect = new RedirectPatternRule(); |
| redirect.setPattern("/redirect/*"); |
| redirect.setReplacement("/redirected"); |
| rewrite.addRule(redirect); |
| |
| RewritePatternRule oldToNew = new RewritePatternRule(); |
| oldToNew.setPattern("/some/old/context"); |
| oldToNew.setReplacement("/some/new/context"); |
| rewrite.addRule(oldToNew); |
| |
| RewriteRegexRule reverse = new RewriteRegexRule(); |
| reverse.setRegex("/reverse/([^/]*)/(.*)"); |
| reverse.setReplacement("/reverse/$2/$1"); |
| rewrite.addRule(reverse); |
| |
| server.setHandler(rewrite); |
| |
| ]]> |
| </script></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a name="rewrite-rules"></a>Rules</h3></div></div></div><p>There are several types of rules that are written extending useful |
| base rule classes.</p><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="d0e14151"></a>PatternRule</h4></div></div></div><p>Matches against the request URI using the servlet pattern |
| syntax.</p><div class="variablelist"><dl><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/CookiePatternRule.html" target="_top">CookiePatternRule</a> |
| </span></dt><dd><p>Adds a cookie to the response.</p></dd><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/HeaderPatternRule.html" target="_top">HeaderPatternRule</a> |
| </span></dt><dd><p>Adds/modifies a header in the response.</p></dd><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/RedirectPatternRule.html" target="_top">RedirectPatternRule</a> |
| </span></dt><dd><p>Redirects the response.</p></dd><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/ResponsePatternRule.html" target="_top">ResponsePatternRule</a> |
| </span></dt><dd><p>Sends the response code (status or error).</p></dd><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/RewritePatternRule.html" target="_top">RewritePatternRule</a> |
| </span></dt><dd><p>Rewrite the URI by replacing the matched request path with a |
| fixed string.</p></dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="d0e14202"></a>RegexRule</h4></div></div></div><p>Matches against the request URI using regular expressions.</p><div class="variablelist"><dl><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/RedirectRegexRule.html" target="_top">RedirectRegexRule</a> |
| </span></dt><dd><p>Redirect the response.</p></dd><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/RewriteRegexRule.html" target="_top">RewriteRegexRule</a> |
| </span></dt><dd><p>Rewrite the URI by matching with a regular expression. (The |
| replacement string may use Template:$n to replace the nth capture |
| group.)</p></dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="d0e14226"></a>HeaderRule</h4></div></div></div><p>Match against request headers. Match either on a header name + |
| specific value, or on the presence of a header (with any value).</p><div class="variablelist"><dl><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/ForwardedSchemeHeaderRule.html" target="_top">ForwardedSchemaHeaderRule</a> |
| </span></dt><dd><p>Set the scheme on the request (defaulting to https).</p></dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="d0e14241"></a>Others</h4></div></div></div><p>Oddball rules that defy classification.</p><div class="variablelist"><dl><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/MsieSslRule.html" target="_top">MsieSslRule</a> |
| </span></dt><dd><p>Disables the keep alive for SSL from IE5 or IE6.</p></dd><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/LegacyRule.html" target="_top">LegacyRule</a> |
| </span></dt><dd><p>Implements the legacy API of RewriteHandler</p></dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a name="d0e14265"></a>RuleContainer</h4></div></div></div><p>Groups rules together. The contained rules will only be processed |
| if the conditions for the RuleContainer evaluate to true.</p><div class="variablelist"><dl><dt><span class="term"> |
| <a class="link" href="http://download.eclipse.org/jetty/stable-9/xref/org/eclipse/jetty/rewrite/handler/VirtualHostRuleContainer.html" target="_top">VirtualHostRuleContainer</a> |
| </span></dt><dd><p>Groups rules that apply only to a specific virtual host or a |
| set of virtual hosts</p></dd></dl></div></div></div></div><script type="text/javascript"> |
| SyntaxHighlighter.all() |
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