Jfinal-weixin web.xml出现红叉错误

Question

@JFinal 你好，想跟你请教个问题：

Jfinal-weixin web.xml出现红叉错误,应如何解决?thks.

Multiple annotations found at this line:
 - cvc-complex-type.4: Attribute 'version' must appear on element 'web-app'.
 - cvc-complex-type.2.4.a: Invalid content was found starting with element 'web-app'. One of '{"http://
  java.sun.com/xml/ns/javaee":description, " http://java.sun.com/xml/ns/javaee":display-name, "http://
  java.sun.com/xml/ns/javaee":icon, " http://java.sun.com/xml/ns/javaee":distributable, " http://java.sun.com/xml/
  ns/javaee":context-param, " http://java.sun.com/xml/ns/javaee":filter, " http://java.sun.com/xml/ns/
  javaee":filter-mapping, " http://java.sun.com/xml/ns/javaee":listener, " http://java.sun.com/xml/ns/
  javaee":servlet, " http://java.sun.com/xml/ns/javaee":servlet-mapping, " http://java.sun.com/xml/ns/
  javaee":session-config, " http://java.sun.com/xml/ns/javaee":mime-mapping, " http://java.sun.com/xml/ns/
  javaee":welcome-file-list, " http://java.sun.com/xml/ns/javaee":error-page, " http://java.sun.com/xml/ns/
  javaee":jsp-config, " http://java.sun.com/xml/ns/javaee":security-constraint, " http://java.sun.com/xml/ns/
  javaee":login-config, " http://java.sun.com/xml/ns/javaee":security-role, " http://java.sun.com/xml/ns/
  javaee":env-entry, " http://java.sun.com/xml/ns/javaee":ejb-ref, " http://java.sun.com/xml/ns/javaee":ejb-local-
  ref, " http://java.sun.com/xml/ns/javaee":service-ref, " http://java.sun.com/xml/ns/javaee":resource-ref, "http://
  java.sun.com/xml/ns/javaee":resource-env-ref, " http://java.sun.com/xml/ns/javaee":message-destination-ref,
  " http://java.sun.com/xml/ns/javaee":persistence-context-ref, " http://java.sun.com/xml/ns/javaee":persistence-
  unit-ref, " http://java.sun.com/xml/ns/javaee":post-construct, " http://java.sun.com/xml/ns/javaee":pre-destroy,
  " http://java.sun.com/xml/ns/javaee":message-destination, " http://java.sun.com/xml/ns/javaee":locale-encoding-
  mapping-list}' is expected.