我的解决方法是修改tomcat/conf/server.xml
<Host name="域名" appBase="" //这里为空
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 path="" docBase="D:\apache-tomcat-7.0.53-windows-x64\apache-tomcat-7.0.53\webapps\项目名称" debug="0" reloadable="true"></Context>
</Host>