web.xml配置错误页面跳转
web.xml配置错误页面跳转（使用<error-page></error-page>）
<welcome-file-list> <welcome-file>/index.html</welcome-file> <welcome-file>/welcome.jsp</welcome-file> </welcome-file-list> <error-page> <error-code>401</error-code> <location>/jsp/common/error.jsp</location> </error-page> <error-page> <error-code>403</error-code> <location>/jsp/common/error.jsp</location> </error-page> <error-page> <error-code>404</error-code> <location>/jsp/common/error.jsp</location> </error-page> <error-page> <error-code>500</error-code> <location>/jsp/common/error.jsp</location> </error-page> <taglib> <taglib-uri>/tags/struts-bean</taglib-uri> <taglib-location>/WEB-INF/struts-bean.tld</taglib-location> </taglib>