Struts2: The markup in the document following the root must be well-formed

I'm just discovering Struts2 and I have a problem with the web.xml file.

It gives me an error near the filter tag:

<filter>
   <filter-name>struts2</filter-name>
   <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>

The error says: Multiple annotations found at this line: - Start tag of element <filter> - The markup in the document following the root element must be well- formed.

What is the problem? And how can I solve it?

Thank you!

Thanks Aleksander for your interest:

Here is my web.xml file:

    `<?xml version="1.0" encoding="UTF-8"?>
<web-app>
  <display-name>struts2example</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
</web-app>

<filter>
    <filter-name>struts2</filter-name>
    <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>`

Solution

You are putting tags outside of the <web-app> root tag. Put your <filter> inside <web-app> like that

<?xml version="1.0" encoding="UTF-8"?>
<web-app>
  <display-name>struts2example</display-name>
  <welcome-file-list>
   <welcome-file>index.html</welcome-file>
   <welcome-file>index.htm</welcome-file>
   <welcome-file>index.jsp</welcome-file>
   <welcome-file>default.html</welcome-file>
   <welcome-file>default.htm</welcome-file>
   <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>

  <filter>
   <filter-name>struts2</filter-name>
   <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

Also org.apache.struts2.dispatcher.FilterDispatcher is deprecated since Struts 2.1.3, use org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter instead.