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刘洪青6266f992017-05-15 21:21:03 +0800[diff] [blame^]1<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat 7 Architecture (7.0.77) - Request Process Flow</title><meta name="author" content="Yoav Shapira"><style type="text/css" media="print">
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79</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="
Hongqing Liufd5ee812014-05-10 16:32:51 +0800[diff] [blame]80 The Apache Tomcat Servlet/JSP Container
刘洪青6266f992017-05-15 21:21:03 +0800[diff] [blame^]81 " 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">Architecture 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>Contents</strong></p><ul><li><a href="index.html">Contents</a></li><li><a href="overview.html">Overview</a></li><li><a href="startup.html">Server Startup</a></li><li><a href="requestProcess.html">Request Process</a></li></ul></td><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left" id="mainBody"><h1>Request Process Flow</h1><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Request Process Flow"><!--()--></a><a name="Request_Process_Flow"><strong>Request Process Flow</strong></a></font></td></tr><tr><td><blockquote>
Hongqing Liufd5ee812014-05-10 16:32:51 +0800[diff] [blame]82
83<p>
84This page describes the process used by Tomcat to handle
85an incoming request. This process is largely defined by
86the Servlet Specification, which outlines the order
87of events that must take place.
88</p>
89
90<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="description"><strong>description</strong></a></font></td></tr><tr><td><blockquote>
91<p>
92TODO
93</p>
94</blockquote></td></tr></table>
95
刘洪青6266f992017-05-15 21:21:03 +0800[diff] [blame^]96<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="diagrams"><strong>diagrams</strong></a></font></td></tr><tr><td><blockquote>
Hongqing Liufd5ee812014-05-10 16:32:51 +0800[diff] [blame]97<p>
98A UML sequence diagram of the request process is available
刘洪青6266f992017-05-15 21:21:03 +0800[diff] [blame^]99<a href="requestProcess/request-process.png">here.</a>
Hongqing Liufd5ee812014-05-10 16:32:51 +0800[diff] [blame]100</p>
刘洪青6266f992017-05-15 21:21:03 +0800[diff] [blame^]101<p>
102A UML sequence diagram of the authentication process is available
103<a href="requestProcess/authentication-process.png">here.</a>
104</p>
105
Hongqing Liufd5ee812014-05-10 16:32:51 +0800[diff] [blame]106</blockquote></td></tr></table>
107
108<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="comments"><strong>comments</strong></a></font></td></tr><tr><td><blockquote>
109<p>
110The Servlet Specification provides many opportunities for
111listening in (using Listeners) or modifying (using Filters)
112the request handling process even before the request arrives
113at the servlet that will handle it.
114</p>
115
116</blockquote></td></tr></table>
117
刘洪青6266f992017-05-15 21:21:03 +0800[diff] [blame^]118</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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