Tomcat的总体架构概览2（v8.5）(用server.xml的视角解读)

<?xml version="1.0" encoding="UTF-8"?>
<!-- 1、此处是Server的定义与配置。整个tomcat有且仅有唯一一个Server -->
<Server port="8005" shutdown="SHUTDOWN">
  <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
  <GlobalNamingResources>
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>
	<!-- 2、此处是service的定义 -->
  <Service name="Catalina">
	<!-- 2.1、此处是Connector连接器的配置，用于配置端口，协议等信息 -->
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
	<!-- 2.2、此处是Container（Engine+Host+Context）的定义与配置，最上层Engine定义，命名为Catalina-->
    <Engine name="Catalina" defaultHost="localhost">
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>
	  <!-- 2.2.1虚拟主机的定义，（localhost，会适配所有其他Host未匹配的域名或地址，也用于本地路径的访问。） -->
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" />
      </Host>
	  <!-- 我们也可以定义一个另外的虚拟主机，来针对不同的域名（name值要与域名解析时候设置的域名相同，webapp2是与webapp同级的目录。） -->
      <Host name="www.jangle.xyz"  appBase="webapps2"
            unpackWARs="true" autoDeploy="true">
		<!-- 2.2.2Context的自定义,我们定义了一个Context,它的web应用目录是绝对路径D:/jangle，通过www.jangle.xyz/jan 进行访问-->
		<Context docBase="D:/jangle" path="/jan"></Context>
      </Host>
    </Engine>
  </Service>
</Server>

server.xml的详细配置办法，与参数介绍，后续整理完成再写。

 

引用：https://blog.youkuaiyun.com/Bof_jangle/article/details/104405720