一个tomcat同时部署多个项目
1. 注意事项：
1. 每一个service的端口号不能产生冲突
2. service的name属性的值可以重复 name="Catalina"
3. 每一个webapps下面需要有doc、manage两个文件夹，可以从已有的webapps下面复制
2. 默认的目录结构
只包含一个webapps文件夹，webapps下面包含docs、manager、root三个文件夹，log文件夹保存应用启动的控制台信息。
3. 复制webapps文件夹
先复制webapps文件夹，然后复制docs、manager文件夹
4. 配置conf\server.xml
<?xml version="1.0" encoding="UTF-8"?> <Server port="8006" shutdown="SHUTDOWN">
<Listener className="org.apache.catalina.startup.VersionLoggerListener" />
<!-- 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> <!--第一个项目使用默认端口8080，-->
<Service name="Catalina">
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
<!-- Define an AJP 1.3 Connector on port 8009 -->
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
<Engine name="Catalina" defaultHost="localhost">
<!-- Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack -->
<Realm className="org.apache.catalina.realm.LockOutRealm">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<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 "%r" %s %b" /> </Host>
</Engine>
</Service>
<!-- 第二个项目，webapps1，端口号8081
再修改redirectPort：8444、
appBase="webapps1"
-->
<Service name="Catalina">
<Connector port="8081" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8444" />
<Engine name="Catalina" defaultHost="localhost">
<Realm className="org.apache.catalina.realm.LockOutRealm">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<Host name="localhost" appBase="webapps1" 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" />
</Host>
</Engine>
</Service>
<!--第三个项目，端口号8082 redirectPort="8445"-->
<Service name="Catalina">
<Connector port="8082" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8445" />
<Engine name="Catalina" defaultHost="localhost">
<Realm className="org.apache.catalina.realm.LockOutRealm">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<Host name="localhost" appBase="webapps2" 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" />
</Host>
</Engine>
</Service>
<!--第三个项目，端口号8083 redirectPort="8446"-->
<Service name="Catalina">
<Connector port="8083" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8446" />
<Engine name="Catalina" defaultHost="localhost">
<Realm className="org.apache.catalina.realm.LockOutRealm">
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<Host name="localhost" appBase="webapps3" 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" />
</Host>
</Engine>
</Service>
</Server>
6. server.xml配置信息
7.Context配置
在toncat5.5版本之后，不推荐在server.xml中进行配置，而是在/conf/context.xml中进行独立的配置。因为 server.xml 是不可动态重加载的资源，服务器一旦启动了以后，要修改这个文件，就得重启服务器才能重新加载。而 context.xml 文件则不然， tomcat 服务器会定时去扫描这个文件。一旦发现文件被修改（时间戳改变了），就会自动重新加载这个文件，而不需要重启服务器 。
一个项目可以通过多个地址进入，如下：http://localhost:8080/或者http://localhost:8080/webroot或者http://localhost:8080/
webroot1
<?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.
-->
<!-- The contents of this file will be loaded for each web application -->
<!--当前context.xml文件的上一级目录，然后再下一层-->
<Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" deployOnStartup="true">
<Context path="/webroot" docBase="..\webapps" reloadbale="true"> <!-- Default set of monitored resources. If one of these changes, the -->
<!-- web application will be reloaded. -->
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<WatchedResource>${catalina.base}/conf/web.xml</WatchedResource> <!--控资源文件，如果web.xml || web.xml改变了，则自动重新加载改应用。 --> <!-- Uncomment this to disable session persistence across Tomcat restarts -->
<!--
<Manager pathname="" />
-->
</Context>
<Context path="/webroot1" docBase="..\webapps" reloadbale="true"> <!-- Default set of monitored resources. If one of these changes, the -->
<!-- web application will be reloaded. -->
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<WatchedResource>${catalina.base}/conf/web.xml</WatchedResource> <!--控资源文件，如果web.xml || kaka.xml改变了，则自动重新加载改应用。 --> <!-- Uncomment this to disable session persistence across Tomcat restarts -->
<!--
<Manager pathname="" />
-->
</Context>
</Host>
