web - favicon.ico 未找到错误？

Question

我有一个使用 Spring Security 3 在 Tomcat 上运行的应用程序。我没有为我的网站定义任何图标，但是当我从我的 IDE sometimes 运行我的应用程序时从我的登录页面登录后，它会将我的页面重定向到:

http://localhost:8080/favicon.ico

并说:

404 Not Found

这里有一个话题: http://forum.springsource.org/showthread.php?100901-redirect-to-favicon.ico但是我没有定义 favicon.ico 默认情况下 Spring Security 3 是否需要它(如果是，为什么有时会发生？)

Answer 1

这是解释:

The issue is, when the browser cache is empty and a user comes in, here is what happens:

• the user requests URL "/". This URL is cached.
• the browser makes a requests to "/favicon.ico". This URL becomes the new URL where to redirect to upon authentication.
• the user posts the login form and is redirected to "/favicon.ico".

To fix this, you need to set "/favicon.ico" as being a non-secured resources:

<intercept-url pattern="/favicon.ico" access="ROLE_ANONYMOUS" />

取自: http://blog.idm.fr/2010/09/spring-security-redirecting-to-faviconico.html