web.xml文件中</servlet mapping>一行总报错，截图如下

错误提示：cvc-complex-type.2.4.a: Invalid content was found starting with element 'servlet-mapping'. One of
'{"http://java.sun.com/xml/ns/javaee":url-pattern}' is expected.

如何解决

后面那个少一个斜杠，不能识别为结束

应该是前面少一个斜杠把
</ servlet-mapping>