如何在Spring Security 3.1中处理不同的身份验证异常？

首先,我想评论一下,我已经检查了Stack Overflow中的其他问题,并根据答案实现了我自己的方法：https://stackoverflow.com/a/14425801/2487263和https://stackoverflow.com/a/16101649/2487263

我试图在Spring 3.2,Spring MVC应用程序中使用Spring安全3.1来保护REST API,我使用简单配置的基本身份验证方法：

FailedEntryPoint">


如您所见,我使用自定义入口点,我有自己的ErrorResponse对象,我将以json格式添加到http响应,请参阅下面的代码：

    @Component
public class AuthenticationFailedEntryPoint implements AuthenticationEntryPoint {
    static Logger log = Logger.getLogger(AuthenticationFailedEntryPoint.class);

    @Override
    public void commence(HttpServletRequest request,HttpServletResponse response,AuthenticationException authException) throws IOException,servletexception {
        log.error(ExceptionUtils.getStackTrace(authException));
        ErrorResponse errorResponse = new ErrorResponse();  

            ... here I fill my errorResponse object ...

        ObjectMapper jsonMapper = new ObjectMapper();

        response.setContentType("application/json;charset=UTF-8");
        response.setStatus(status); 

        PrintWriter out = response.getWriter();
        out.print(jsonMapper.writeValueAsstring(errorResponse));   
    }
}

我尝试了两种测试用例的方法：
>尝试使用一个服务而不提供基本身份验证标头：
这是请求/响应：

GET http://localhost:8081/accounts/accounts?accountNumber=1013


 -- response --
401 Unauthorized
Server:  Apache-Coyote/1.1

Content-Type:  application/json;charset=UTF-8

Content-Length:  320

Date:  Fri,25 Oct 2013 17:11:15 GMT

Proxy-Connection:  Keep-alive

{"status":401,"messages":[{"code":"000011","message":"You are not authorized to reach this endpoint"}]}

2.-尝试使用相同的服务,但现在使用错误的密码发送基本身份验证标头：
这是请求/响应：

GET http://localhost:8081/accounts/accounts?accountNumber=1013
Authorization: Basic bXl1c2VyOmdvb2RieWU=


 -- response --
401 Unauthorized
Server:  Apache-Coyote/1.1

WWW-Authenticate:  Basic realm="Spring Security Application"

Content-Type:  text/html;charset=utf-8

Content-Length:  1053

Date:  Fri,25 Oct 2013 17:03:09 GMT

Proxy-Connection:  Keep-alive


正如您在第一种情况下所看到的那样,达到了入口点,并且在正确处理异常的情况下执行了begin方法,并返回了json响应.但是,当密码错误时,情况就不会发生.
在日志中我发现两个案例都产生了不同的流程：
对于案例1(没有auth标头)：

...
2013-10-25 13:11:15,830 DEBUG tomcat-http--13 org.springframework.security.web.access.intercept.FilterSecurityInterceptor - Secure object: FilterInvocation: URL: /accounts?accountNumber=1013; Attributes: [ROLE_USER]
2013-10-25 13:11:15,830 DEBUG tomcat-http--13 org.springframework.security.web.access.intercept.FilterSecurityInterceptor - PrevIoUsly Authenticated: org.springframework.security.authentication.AnonymousAuthenticationToken@9055e4a6: Principal: anonymousUser; Credentials: [PROTECTED]; Authenticated: true; Details: org.springframework.security.web.authentication.WebAuthenticationDetails@957e: RemoteIpAddress: 127.0.0.1; SessionId: null; Granted Authorities: ROLE_ANONYMOUS
2013-10-25 13:11:15,830 DEBUG tomcat-http--13 org.springframework.security.access.Vote.AffirmativeBased - Voter: org.springframework.security.access.Vote.RoleVoter@11da1f99,returned: -1
2013-10-25 13:11:15,831 DEBUG tomcat-http--13 org.springframework.security.access.Vote.AffirmativeBased - Voter: org.springframework.security.access.Vote.AuthenticatedVoter@7507ef7,returned: 0
2013-10-25 13:11:15,831 DEBUG tomcat-http--13 org.springframework.security.web.access.ExceptionTranslationFilter - Access is denied (user is anonymous); redirecting to authentication entry point
org.springframework.security.access.AccessDeniedException: Access is denied
...

对于案例2(密码错误)：

...
2013-10-25 13:03:08,941 DEBUG tomcat-http--11 org.springframework.security.web.authentication.www.BasicAuthenticationFilter - Basic Authentication Authorization header found for user 'myuser'
2013-10-25 13:03:08,941 DEBUG tomcat-http--11 org.springframework.security.authentication.ProviderManager - Authentication attempt using org.springframework.security.authentication.dao.DaoAuthenticationProvider
2013-10-25 13:03:09,544 DEBUG tomcat-http--11 org.springframework.security.authentication.dao.DaoAuthenticationProvider - Authentication Failed: password does not match stored value
2013-10-25 13:03:09,545 DEBUG tomcat-http--11 org.springframework.security.web.authentication.www.BasicAuthenticationFilter - Authentication request for Failed: org.springframework.security.authentication.BadCredentialsException: Bad credentials
2013-10-25 13:00:30,136 DEBUG tomcat-http--9 org.springframework.security.web.context.SecurityContextPersistenceFilter - SecurityContextHolder Now cleared,as request processing completed
...

第一种情况抛出一个AccessDeniedException,它被捕获并发送到我的入口点的begin方法,但抛出BadCredentialsException的第二种情况不会进入入口点.
这里奇怪的是,begin方法应该接收一个AuthenticationException,但是AccessDeniedException不是AuthenticationException而是BadCredentialsException,请参阅Spring security 3.1 api文档中的继承树：

java.lang.Object
  extended by java.lang.Throwable
      extended by java.lang.Exception
          extended by java.lang.RuntimeException
              extended by org.springframework.security.access.AccessDeniedException

java.lang.Object
  extended by java.lang.Throwable
      extended by java.lang.Exception
          extended by java.lang.RuntimeException
              extended by org.springframework.security.core.AuthenticationException
                  extended by org.springframework.security.authentication.BadCredentialsException

为什么使用不正确类型的异常调用begin方法,以及为什么在具有正确类型的BadCredentialsException时不调用？
编辑—实现@Luke的答案
所描述的两个解决方案使用问题中显示的自定义AuthenticationEntryPoint,需要选择以下两个选项之一来修改配置：
>添加自定义BASIC_AUTH_FILTER：

FailedEntryPoint">
    ecurity.web.authentication.www.BasicAuthenticationFilter">
    FailedEntryPoint" />

>或者将入口点添加到http-basic元素,IMO是最干净的解决方案：

FailedEntryPoint">
    FailedEntryPoint" />


最佳答案
我认为问题在于,在基本认证失败后,对入口点的调用直接来自BasicAuthenticationFilter,默认情况下是内置实现.
您还需要设置entry-point-ref attribute on the http-basic元素来解决此问题.
或者,您可以将基本身份验证筛选器定义为bean,并完全避免使用命名空间.

                
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如何在Spring Security 3.1中处理不同的身份验证异常？

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