tomcat解决跨域配置＜Context docBase=“xx“ path=““ reloadable=“true“ crossContext=“true“/＞导致项目加载两次

springboot打成得war放在tomcat中，每次定时任务都回执行两次，发现原来是启动得时候，项目加载了两次导致，为了解决前后断跨域得问题，在server.xml中配置如下，方可解决问题。
1：Host 中的appBase=""
2:Context 中的docBase=“webapps/xxx”

<Host appBase="" autoDeploy="true" name="localhost" unpackWARs="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" pattern="%h %l %u %t &quot;%r&quot; %s %b" prefix="localhost_access_log" suffix=".txt"/>
	 <Context docBase="webapps/xxx" path="" reloadable="true" crossContext="true"/>
      </Host>