Spring MVC：错误页面和主体信息

要从错误页面访问主体数据，您需要将spring安全过滤器映射为：

<filter-mapping>    <filter-name>springSecurityFilterChain</filter-name>    <url-pattern>/*</url-pattern>    <dispatcher>FORWARD</dispatcher>    <dispatcher>REQUEST</dispatcher>    <dispatcher>ERROR</dispatcher></filter-mapping>