（xml）cvc-complex-type.2.4.a：发现无效内容，以元素“ init-param”开头

Question

I do not know what caused this error.

Please help me fix this error.

cvc-complex-type.2.4.a: Invalid content was found starting with element 'init-param'. One of '{" http://java.sun.com/xml/ns/javaee ":module-name, "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.s un.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":data-source, " http://java.sun.com/xml/ns/javaee ":message-destination, " http://java.sun.com/xml/ns/javaee ":locale-encoding-mapping-list, " http://java.sun.com/xml/ns/javaee ":absolute-ordering}' is expected.

Answer 1

<init-param> tag should be inside <servlet> tag like this:

<servlet>
  <servlet-name></servlet-name>
  <servlet-class></servlet-class>
  <init-param>
    <param-name></param-name>
    <param-value></param-value>
  </init-param>
</servlet>