The best is in the Web. xml file to configure the error code of the jump page, first set up a page with 500 errors, the prompt error, and then the Web. xml file configuration, configured as follows
First, the error code to configure the Error-page
<error-page>
<error-code>404</error-code>
<location>/NotFound.jsp</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/NotFound.jsp</location>
</error-page>
The above is configured to jump to the error handling page notfound.jsp when the system has a 404 error.
Second, configure Error-page by the type of exception
<error-page>
<exception-type>java.lang.NullException</exception-type>
<location>/error.jsp</location>
</error-page>
Exception-type: Indicates the type of exception.
Location: Indicates where the wrong path is.
Http://wenwen.sogou.com/z/q242233030.htm
JSP, when the page is 404 or 500. Set jump to Error prompt page