解決The content of element type "web-app" must match報錯
阿新 • • 發佈:2022-03-15
Spring MVC中配置多個Servlet時,IDEA報錯,如下:
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*)".
- No grammar constraints (DTD or XML schema) detected for the document.
意思很簡單,次序不對,很多博文建議刪除DOCTYPE中的校驗程式碼方法是不推薦的。
正確做法是調整次序。
如web.xml中存在如下多個servlet,此時編輯器將報錯,xml程式碼如下:
1 <servlet> 2 <servlet-name>UserServlet</servlet-name> 3 <servlet-class>fun.liping.web.UserServlet</servlet-class> 4 </servlet> 5 <servlet-mapping>6 <servlet-name>UserServlet</servlet-name> 7 <url-pattern>/userServlet</url-pattern> 8 </servlet-mapping> 9 <servlet> 10 <servlet-name>DispatcherServlet</servlet-name> 11 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 12 <load-on-startup>1</load-on-startup> 13 </servlet> 14 <servlet-mapping> 15 <servlet-name>DispatcherServlet</servlet-name> 16 <url-pattern>/</url-pattern> 17 </servlet-mapping>
此時要保證所有的servlet標籤在servlet-mapping標籤前面,調整次序如下:
1 <servlet> 2 <servlet-name>UserServlet</servlet-name> 3 <servlet-class>fun.liping.web.UserServlet</servlet-class> 4 </servlet> 5 <servlet> 6 <servlet-name>DispatcherServlet</servlet-name> 7 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 8 <load-on-startup>1</load-on-startup> 9 </servlet> 10 <servlet-mapping> 11 <servlet-name>UserServlet</servlet-name> 12 <url-pattern>/userServlet</url-pattern> 13 </servlet-mapping> 14 <servlet-mapping> 15 <servlet-name>DispatcherServlet</servlet-name> 16 <url-pattern>/</url-pattern> 17 </servlet-mapping>
以上,問題解決。
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