org.springframework.security.AuthenticationCredentialsNotFoundException: An Authentication object was not found in the SecurityC

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本文探讨了在Spring Security框架中遇到的一个常见问题：当配置中缺少匿名认证过滤器时，匿名用户首次尝试访问受保护资源所触发的未在SecurityContext中找到Authentication对象异常。文章提供了排查此问题的方法及建议检查自定义过滤器的位置。

Reference:

1.5. I get an exception with the message "An Authentication object was not found in the SecurityContext". What's wrong? This is a another debug level message which occurs the first time an anonymous user attempts to access a protected resource, but when you do not have an AnonymousAuthenticationFilter in your filter chain configuration. DEBUG [ExceptionTranslationFilter] - Authentication exception occurred; redirecting to authentication entry point org.springframework.security.AuthenticationCredentialsNotFoundException: An Authentication object was not found in the SecurityContext at org.springframework.security.intercept.AbstractSecurityInterceptor.credentialsNotFound(AbstractSecurityInterceptor.java:342) at org.springframework.security.intercept.AbstractSecurityInterceptor.beforeInvocation(AbstractSecurityInterceptor.java:254) It is normal and shouldn't be anything to worry about.

You can check your customized filterSecurityInterceptor, and change the custom-filter position.