希望当出现以上错误的时候跳转到error.htm页面
<error-page>web.xml
<error-code>404</error-code>
<location>/404.jsp</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/500.jsp</location>
</error-page>
<error-page>
<error-code>503</error-code>
<location>/503.jsp</location>
</error-page>