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| </style></head><body bgcolor="#ffffff" text="#000000" link="#525D76" alink="#525D76" vlink="#525D76"><table border="0" width="100%" cellspacing="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img src="../images/tomcat.gif" align="right" alt=" | |
| The Apache Tomcat Servlet/JSP Container | |
| " border="0"></a></td><td><h1><font face="arial,helvetica,sanserif">Apache Tomcat 7</font></h1><font face="arial,helvetica,sanserif">Version 7.0.77, Mar 28 2017</font></td><td><!--APACHE LOGO--><a href="http://www.apache.org/"><img src="../images/asf-logo.svg" align="right" alt="Apache Logo" border="0" style="width: 266px;height: 83px;"></a></td></tr></table><table border="0" width="100%" cellspacing="4"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr noshade size="1"></td></tr><tr><!--LEFT SIDE NAVIGATION--><td width="20%" valign="top" nowrap class="noPrint"><p><strong>Links</strong></p><ul><li><a href="../index.html">Docs Home</a></li><li><a href="index.html">Config Ref. Home</a></li><li><a href="http://wiki.apache.org/tomcat/FAQ">FAQ</a></li><li><a href="#comments_section">User Comments</a></li></ul><p><strong>Top Level Elements</strong></p><ul><li><a href="server.html">Server</a></li><li><a href="service.html">Service</a></li></ul><p><strong>Executors</strong></p><ul><li><a href="executor.html">Executor</a></li></ul><p><strong>Connectors</strong></p><ul><li><a href="http.html">HTTP</a></li><li><a href="ajp.html">AJP</a></li></ul><p><strong>Containers</strong></p><ul><li><a href="context.html">Context</a></li><li><a href="engine.html">Engine</a></li><li><a href="host.html">Host</a></li><li><a href="cluster.html">Cluster</a></li></ul><p><strong>Nested Components</strong></p><ul><li><a href="globalresources.html">Global Resources</a></li><li><a href="jar-scanner.html">JarScanner</a></li><li><a href="listeners.html">Listeners</a></li><li><a href="loader.html">Loader</a></li><li><a href="manager.html">Manager</a></li><li><a href="realm.html">Realm</a></li><li><a href="resources.html">Resources</a></li><li><a href="sessionidgenerator.html">SessionIdGenerator</a></li><li><a href="valve.html">Valve</a></li></ul><p><strong>Cluster Elements</strong></p><ul><li><a href="cluster.html">Cluster</a></li><li><a href="cluster-manager.html">Manager</a></li><li><a href="cluster-channel.html">Channel</a></li><li><a href="cluster-membership.html">Channel/Membership</a></li><li><a href="cluster-sender.html">Channel/Sender</a></li><li><a href="cluster-receiver.html">Channel/Receiver</a></li><li><a href="cluster-interceptor.html">Channel/Interceptor</a></li><li><a href="cluster-valve.html">Valve</a></li><li><a href="cluster-deployer.html">Deployer</a></li><li><a href="cluster-listener.html">ClusterListener</a></li></ul><p><strong>web.xml</strong></p><ul><li><a href="filter.html">Filter</a></li></ul><p><strong>Other</strong></p><ul><li><a href="systemprops.html">System properties</a></li></ul></td><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left" id="mainBody"><h1>Overview</h1><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Overview"><strong>Overview</strong></a></font></td></tr><tr><td><blockquote> | |
| <p>This manual contains reference information about all of the configuration | |
| directives that can be included in a <code>conf/server.xml</code> file to | |
| configure the behavior of the Tomcat 7 Servlet/JSP container. It does not | |
| attempt to describe which configuration directives should be used to perform | |
| specific tasks - for that, see the various <em>HOW-TO</em> documents on the | |
| main index page.</p> | |
| <p>Tomcat configuration files are formatted as schemaless XML; elements and | |
| attributes are case-sensitive. Apache Ant-style variable substitution | |
| is supported; a system property with the name <code>propname</code> may be | |
| used in a configuration file using the syntax <code>${propname}</code>. All | |
| system properties are available including those set using the <code>-D</code> | |
| syntax, those automatically made available by the JVM and those configured in | |
| the <code>$CATALINA_BASE/conf/catalina.properties</code> file. | |
| </p> | |
| <p>The configuration element descriptions are organized into the following | |
| major categories:</p> | |
| <ul> | |
| <li><strong>Top Level Elements</strong> - <code><Server></code> is the | |
| root element of the entire configuration file, while | |
| <code><Service></code> represents a group of Connectors that is | |
| associated with an Engine.</li> | |
| <li><strong>Connectors</strong> - Represent the interface between external | |
| clients sending requests to (and receiving responses from) a particular | |
| Service.</li> | |
| <li><strong>Containers</strong> - Represent components whose function is to | |
| process incoming requests, and create the corresponding responses. | |
| An Engine handles all requests for a Service, a Host handles all requests | |
| for a particular virtual host, and a Context handles all requests for a | |
| specific web application.</li> | |
| <li><strong>Nested Components</strong> - Represent elements that can be | |
| nested inside the element for a Container. Some elements can be nested | |
| inside any Container, while others can only be nested inside a | |
| Context.</li> | |
| </ul> | |
| <p>For each element, the corresponding documentation follows this general | |
| outline:</p> | |
| <ul> | |
| <li><strong>Introduction</strong> - Overall description of this particular | |
| component. There will be a corresponding Java <em>interface</em> (in | |
| the <code>org.apache.catalina</code> package) that is implemented by one | |
| or more standard implementations.</li> | |
| <li><strong>Attributes</strong> - The set of attributes that are legal for | |
| this element. Generally, this will be subdivided into <em>Common</em> | |
| attributes that are supported by all implementations of the corresponding | |
| Java interface, and <em>Standard Implementation</em> attributes that are | |
| specific to a particular Java class that implements this interface. | |
| The names of required attributes are <strong>bolded</strong>.</li> | |
| <li><strong>Nested Components</strong> - Enumerates which of the <em>Nested | |
| Components</em> can be legally nested within this element.</li> | |
| <li><strong>Special Features</strong> - Describes the configuration of a large | |
| variety of special features (specific to each element type) that are | |
| supported by the standard implementation of this interface.</li> | |
| </ul> | |
| </blockquote></td></tr></table></td></tr><tr class="noPrint"><td width="20%" valign="top" nowrap class="noPrint"></td><td width="80%" valign="top" align="left"><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="comments_section" id="comments_section"><strong>Comments</strong></a></font></td></tr><tr><td><blockquote><p class="notice"><strong>Notice: </strong>This comments section collects your suggestions | |
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