主域名：www.abc.com
二级域名（需解析）：test.abc.com
test1.abc.com
要求：一级和二级域名访问都不带端口号和项目名称
修改端口为80默认端口
<Connector port="80" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
配置主域名：
<Engine name="Catalina" defaultHost="www.abc.com"> 将localhost改成www.abc.com
设置主域名访问的项目路径，将host默认的localhost改为www.abc.com
<Host name="www.abc.com" 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 "%r" %s %b" />
<Context docBase="project1" path="" reloadable="true" caseSensitive="false" debug="0"/>
</Host>
主域名访问tomcat/webapps下面的project1项目，访问地址：http://abc.com/
配置二级域名(test1.abc.com)：
<Host name="test1.abc.com" debug="0" appBase="webapps"
unpackWARs="true"
xmlValidation="false" xmlNamespaceAware="false">
<Context docBase="api" path="" reloadable="true" caseSensitive="false" debug="0"/>
</Host>
访问tomcat/webspps下面的api项目，访问地址：http://test1.abc.com/
配置二级域名（test2.abc.com）:
<Host name="test2.abc.com" debug="0" appBase="" unpackWARs="true"
xmlValidation="false" xmlNamespaceAware="false">
<Context docBase="/usr/local/data/" path="/" reloadable="true" caseSensitive="false" debug="0"/>
</Host>
访问tomcat外，/usr/local/data/目录下的资源，访问地址：http://test2.abc.com/image/a.jpg,即访问/usr/local/data/image/a.jpg 这个图片资源
禁止ip访问：
例如上面的一级和二级域名对应的ip为1.1.1.1，指定一个不存在的tomcat目录即可
<Host name="1.1.1.1" debug="0" appBase="abc"
unpackWARs="true"
xmlValidation="false" xmlNamespaceAware="false">
</Host>
访问：http://1.1.1.1/出现404，当然也可以指定一个项目只是为了显示一个友好的错误页面
完整的server.xml：
<?xml version='1.0' encoding='utf-8'?>
<!--Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!-- Note: A "Server" is not itself a "Container", so you may not
define subcomponents such as "Valves" at this level.
Documentation at /docs/config/server.html
-->
<Server port="8006" shutdown="SHUTDOWN">
<!-- Security listener. Documentation at /docs/config/listeners.html
<Listener className="org.apache.catalina.security.SecurityListener" />
-->
<!--APR library loader. Documentation at /docs/apr.html -->
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
<!-- Prevent memory leaks due to use of particular java/javax APIs-->
<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
<!-- Global JNDI resources
Documentation at /docs/jndi-resources-howto.html
-->
<GlobalNamingResources>
<!-- Editable user database that can also be used by
UserDatabaseRealm to authenticate users
-->
<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>
<!-- A "Service" is a collection of one or more "Connectors" that share
a single "Container" Note: A "Service" is not itself a "Container",
so you may not define subcomponents such as "Valves" at this level.
Documentation at /docs/config/service.html
-->
<Service name="Catalina">
<!--The connectors can use a shared executor, you can define one or more named thread pools-->
<!--
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
maxThreads="150" minSpareThreads="4"/>
-->
<!-- A "Connector" represents an endpoint by which requests are received
and responses are returned. Documentation at :
Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
Java AJP Connector: /docs/config/ajp.html
APR (HTTP/AJP) Connector: /docs/apr.html
Define a non-SSL HTTP/1.1 Connector on port 8080
-->
<Connector port="80" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
<!-- A "Connector" using the shared thread pool-->
<!--
<Connector executor="tomcatThreadPool"
port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
-->
<!-- Define a SSL HTTP/1.1 Connector on port 8443
This connector uses the JSSE configuration, when using APR, the
connector should be using the OpenSSL style configuration
described in the APR documentation -->
<!--
<Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
maxThreads="150" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" />
-->
<!-- Define an AJP 1.3 Connector on port 8009 -->
<Connector port="8010" protocol="AJP/1.3" redirectPort="8443" />
<!-- An Engine represents the entry point (within Catalina) that processes
every request. The Engine implementation for Tomcat stand alone
analyzes the HTTP headers included with the request, and passes them
on to the appropriate Host (virtual host).
Documentation at /docs/config/engine.html -->
<!-- You should set jvmRoute to support load-balancing via AJP ie :
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
-->
<Engine name="Catalina" defaultHost="www.abc.com">
<!--For clustering, please take a look at documentation at:
/docs/cluster-howto.html (simple how to)
/docs/config/cluster.html (reference documentation) -->
<!--
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
-->
<!-- Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack -->
<Realm className="org.apache.catalina.realm.LockOutRealm">
<!-- This Realm uses the UserDatabase configured in the global JNDI
resources under the key "UserDatabase". Any edits
that are performed against this UserDatabase are immediately
available for use by the Realm. -->
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<Host name="www.abc.com" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<!-- SingleSignOn valve, share authentication between web applications
Documentation at: /docs/config/valve.html -->
<!--
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
-->
<!-- Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" -->
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log" suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
<Context docBase="project1" path="" reloadable="true" caseSensitive="false" debug="0"/>
</Host>
<Host name="1.1.1.1" debug="0" appBase="abc"
unpackWARs="true"
xmlValidation="false" xmlNamespaceAware="false">
</Host>
<Host name="test1.abc.com" debug="0" appBase="webapps"
unpackWARs="true"
xmlValidation="false" xmlNamespaceAware="false">
<Context docBase="api" path="" reloadable="true" caseSensitive="false" debug="0"/>
</Host>
<Host name="test2.abc.com" debug="0" appBase="" unpackWARs="true"
xmlValidation="false" xmlNamespaceAware="false">
<Context docBase="/usr/local/data/" path="/" reloadable="true" caseSensitive="false" debug="0"/>
</Host>
</Engine>
</Service>
</Server>