强制先执行"WebFilter“

Question

考虑我的web.xml中的以下过滤器映射

<filter-mapping>
    <filter-name>rememberMeCookieFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>mustBeSignedInFilter</filter-name>
    <url-pattern>/private/*</url-pattern>
</filter-mapping>

就我所做的测试而言，如果我转到/private/account.jsp，mustBeSignedInFilter将总是首先执行(from what I could read, it's because the path is more specific)。我需要先执行rememberMeCookieFilter。

我该怎么做？

Answer 1

您混淆了过滤器映射和servlet映射。与URL匹配的所有筛选器的执行顺序与其筛选器映射在web.xml中指定的顺序相同。因此，交换过滤器映射，它将按您预期的那样工作。

<filter-mapping>
    <filter-name>mustBeSignedInFilter</filter-name>
    <url-pattern>/private/*</url-pattern>
</filter-mapping>
<filter-mapping>
    <filter-name>rememberMeCookieFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>