spring-security - 在 SpringSecurity 4 中覆盖 BasicAuthenticationEntryPoint 的最简单方法是什么？

Question

我无法在 SO 上找到答案(例如在这里。
Spring Security: Commence method in class extending BasicAuthenticationEntryPoint no being called )

我只想覆盖 BasicAuthenticationEntryPoint 而不覆盖其他过滤器和其他员工:

<bean id="authenticationEntryPoint" name="authenticationEntryPoint"
      class="com.myclass.BasicAuthenticationEntryPoint">
    <property name="realmName" value="myapp" />
</bean>

不幸的是，它不起作用，我需要配置过滤器。

<security:http auto-config="true" ..
<sec:custom-filter ref="basicAuthenticationFilter"
                                before="BASIC_AUTH_FILTER" />

</sec:http>

<bean id="basicAuthenticationFilter"
      class="org.springframework.security.web.authentication.www.BasicAuthenticationFilter">
    <constructor-arg name="authenticationManager" ref="authenticationManager" />
    <constructor-arg name="authenticationEntryPoint" ref="authenticationEntryPoint" />
</bean>

然后我有这个警告。

WARN 2015-10-29 09:44:05,330 [localhost-startStop-1::DefaultFilterChainValidator] [user:system] Possible error: Filters at position 2 and 3 are both instances of org.springframework.security.web.authentication.www.BasicAuthenticationFilter

因此我需要禁用自动配置，但我不想这样做:

<security:http auto-config="false" ...

在 SpringSecurity 4 中覆盖 BasicAuthenticationEntryPoint 的最简单方法是什么？

Answer 1

这适用于 Spring Security 3(我认为它应该适用于 Spring 4)，无需配置任何过滤器:

public class CustomBasicAuthenticationEntryPoint extends BasicAuthenticationEntryPoint {

    @Override
    public void commence(final HttpServletRequest request, final HttpServletResponse response, final AuthenticationException authException) throws IOException, ServletException {

        response.setStatus( HttpServletResponse.SC_UNAUTHORIZED);
    }
}

更新:

CustomBasicAuthenticationEntryPoint 是一个 Spring Bean。你必须告诉Spring。就像在您的帖子中一样(我刚刚在回答中更改了名称):

<bean id="authenticationEntryPoint" name="authenticationEntryPoint"
      class="com.myclass.CustomBasicAuthenticationEntryPoint">
    <property name="realmName" value="myapp" />
</bean>

您还需要告诉 Spring Security 使用这个 bean 作为入口点而不是默认的入口点:

<security:http entry-point-ref="authenticationEntryPoint" ...

默认配置在未通过身份验证时将客户端重定向到登录页面。当您覆盖此默认行为时，您只会发送 401 代码状态(未经身份验证)并且不会重定向客户端。