当spring-security收到空凭据（用户名和密码）时，如何创建自定义响应？

Question

我正在使用邮递员将无值的用户名和密码发送到我的服务器;它就像username=null和password=null。

为了控制服务器的安全性，我使用spring security 3.2。当它收到这些凭证时，spring-security会响应此错误。

Estado HTTP 500 - Fields must not be empty

java.lang.IllegalArgumentException: Cannot pass null or empty values to constructor
    org.springframework.security.core.userdetails.User.<init>(User.java:99)
    org.springframework.security.core.userdetails.User.<init>(User.java:69)
    com.equifax.product.fraud.applicationprocessing.web.rest.interceptors.security.SecurityAuthenticationProvider.retrieveUser(SecurityAuthenticationProvider.java:59)
    org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:132)
    org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:156)
    org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:177)
    org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:168)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
    org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
    org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
    org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)
        org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)

我想输出带有错误的自定义消息的JSON，我该怎么做？

这是我的security.xml：

    <security:http create-session="never" use-expressions="true"
    auto-config="false">

    <security:intercept-url pattern="/application/**"
        access="isFullyAuthenticated()" />
    <security:anonymous />
    <security:http-basic entry-point-ref="securityAccessDeniedEntryPoint" />
    <security:access-denied-handler ref="securityAccessDeniedHandler" />
</security:http>

<security:authentication-manager alias="authenticationManager"
    erase-credentials="false">
    <security:authentication-provider
        ref="genericSecurityAuthenticationProvider" />
</security:authentication-manager>

我正在使用Spring 3.2

Answer 1

您正在传递基本身份验证字符串＆＃34;：＆＃34; （在base64解码后），所以你说这会导致一个空密码用户名。 BasicAuthenticationFilter将这些传递给身份验证提供程序，即您的自定义代码（SecurityAuthenticationProvider），因此无法准确说出它的作用。在某处您正在使用这些值创建User实例，这会抛出您看到的异常。相反，您应该检查AuthenticationProvider中的空值并抛出Authenticationexception。

您还需要覆盖onUnsuccessfulAuthentication中的BasicAuthenticationFilter函数以编写所需的错误响应。您必须将其配置为custom filter，而不是使用<security:http-basic />元素。

Answer 2

使用spring security的标准异常，如果你已经有一个异常处理程序将消息转换为Json响应，它将自行处理。

        catch (Exception exception)
        {
            throw new AuthenticationCredentialsNotFoundException("Fields must not be empty", exception);
        }

Answer 3

What you can do is define a AuthenticationFailureHandler bean, after you implement this bean, you can do what you want inside the method onAuthenticationFailure().

XML Config:

<beans:bean id="myFailureHandler" class="my.custom.impl.MyCustomAuthenticationFailureHandler"/>
<security:http ....>
<security:form-login authentication-failure-handler-ref="myFailureHandler" />
</security:http>

http://docs.spring.io/autorepo/docs/spring-security/3.2.0.RELEASE/apidocs/org/springframework/security/web/authentication/AuthenticationFailureHandler.html

Obs.: If what you want to do don't work with this solution you can implement a AuthenticationProvider

Answer 4

我在使用spring security之前从未这样做过，但我认为这篇文章描述了你需要的一切：http://www.mkyong.com/spring-security/customize-http-403-access-denied-page-in-spring-security/