解决问题:捕获页面错误并反到指定页面处理。
在web.xml中加入如下配置:
<!-- 404 页面不存在错误 --> <error-page> <error-code>404</error-code> <location>/error.jsp</location> </error-page> <!-- 500 服务器内部错误 --> <error-page> <error-code>500</error-code> <location>/error.jsp</location> </error-page> <!-- java.lang.Exception异常错误 --> <error-page> <exception-type>java.lang.Exception</exception-type> <location>/error.jsp</location> </error-page> <!-- java.lang.NullPointerException异常错误 --> <error-page> <exception-type>java.lang.NullPointerException </exception-type> <location>/error.jsp</location> </error-page> <error-page> <exception-type>javax.servlet.ServletException</exception-type> <location>/error.jsp</location> </error-page>