tomcat多站点部署

我们可能会有这种场景，一个tomcat想部署两个web工程，说白了就是公用一个端口，那怎么办呢？就是多站点部署，具体步骤如下（这里以linux平台举例）：

1）先修改server.xml(conf/server.xml)

　　

 <!--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="localhost"  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 &quot;%r&quot; %s %b" />

      </Host>
        <Host name="aa.com"  appBase="/data/aa/apache-tomcat-8.5.8/webapps/aa" unpackWARs="true" autoDeploy="true"></Host>
       <Host name="bb.com"  appBase="/data/bb/apache-tomcat-8.5.8/webapps/bb" unpackWARs="true" autoDeploy="true"></Host> 
   </Engine>

　　ops：千万记得19-35行记得保留，不然war包不会解压，通过站点名或ip直接去访问会404.

　　上面新增的两个host就是两个站点，aa和bb分别于不同的web工程。

2)去conf/Catalina下创建相应的站点目录：

　　

mkdir -p conf/Catalina/aa.com
mkdir -p conf/Catalina/bb.com
这里的aa和bb对应上面server.xml host的name属性

3)建立域名绑定：

　　在/etc/hosts中加入域名映射

　　

127.0.0.1 localhost
127.0.0.1 aa.com
127.0.0.1 bb.com

4）将war包上传至server.xml中host标签appBase对应的路径

重启ok，完毕！