title: tomcat shows 404 error in html but jsp work fine
body: <p>I use Intellij IDEA to create a simple WebApplication with tomcat 7.0.64.</p>
  
  <p>I run the tomcat in IDEA then <a href="http://localhost:8080/" rel="nofollow noreferrer">http://localhost:8080/</a> would working fine, showing the index.jsp.And then i can append xxx.jsp to turn to that page.
  but if i want to turn to a .html page, it would be a 404 error :<a href="https://i.stack.imgur.com/A0Sob.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/A0Sob.png" alt="404 error"></a></p>
  
  <p>the .html file would work fine and show things if i open it in browser.</p>
  
  <p>after i changed the name of index.jsp(so index.html would be the gate i guess), the question still remains.</p>
  
  <p>my folder hierarchy ：
  <a href="https://i.stack.imgur.com/CjZq4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CjZq4.png" alt="project folders"></a></p>
  
  <h3>EDIT:</h3>
  
  <p>web.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
           version="3.1"&gt;
  
  
  &lt;/web-app&gt;
  </code></pre>
  
  <p>Actually nothing in there because project generate nothing and i do not know what attributes should be config.</p>