web.xml报错

The content of element type "web-app" must match "(icon?,display-name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,taglib*,resource-env-ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-ref*)". eoso/WebRoot/WEB-INF

只要把校验头删除就可以解除报错，原因是过滤器的配置代码不符合web-app_2_3.dtd所定义的规范，这个规范的内容还不清楚