webpack vue-router vue 打包上线一些列问题

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
                      http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
  version="3.0"
  metadata-complete="true">

  <display-name>webapp</display-name>
  <description>
     webapp
  </description>
  <error-page>  
   <error-code>404</error-code>  
   <location>/</location>  
</error-page>  
</web-app>