페이지 지정 설정

 <!-- welcome file -->
 <welcome-file-list>
  <welcome-file>index.html</welcome-file>
 </welcome-file-list>

<error-page>
  <exception-type>java.lang.Exception</exception-type>
  <location>/common/error.jsp</location>
</error-page>

<error-page>
  <error-code>404</error-code>
  <location>/common/error.jsp</location>
</error-page>