我把下面的代码放在我的web.xml文件中，但是当我们点击url “ http://192.168.50.6:8080/btmu ”
<web-resource-collection> <web-resource-name><strong>restricted methods</strong></web-resource-name> <url-pattern>/*</url-pattern> <http-method>PUT</http-method> <http-method>POST</http-method> <http-method>DELETE</http-method> <http-method>OPTIONS</http-method> <http-method>TRACE</http-method> </web-resource-collection> <auth-constraint />