<!-- Security constraint: require admin access for the appstats url -->
<security-constraint>
<web-resource-collection>
<url-pattern>/appstats/*</url-pattern>
<url-pattern>/convert/</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>admin</role-name>
</auth-constraint>
</security-constraint>
在下面添加: