1 修改Tomcat的config/context.xml文件，把里面的<context>改成 <Context reloadable="true" privileged="true">.
2 去掉web.xml里面的两个注释如下：
<servlet>
<servlet-name>invoker</servlet-name>
<servlet-class>
org.apache.catalina.servlets.InvokerServlet
</servlet-class>
...
</servlet>
...
<servlet-mapping>
<servlet-name>invoker</servlet-name>
<url-pattern>/servlet/*</url-pattern>
</servlet-mapping>
3
Go to install_dir/conf/web.xml, find the init-param entry for listings, and change the value from false to true.
