5

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施了我自己的方法：https ://stackoverflow.com/a/14425801/2487263和https://stackoverflow.com/a/16101649 /2487263

我正在尝试在 Spring 3.2、Spring MVC 应用程序中使用 Spring security 3.1 保护 REST API，我正在使用具有简单配置的基本身份验证方法：

<http create-session="stateless" entry-point-ref="authenticationFailedEntryPoint">
    <intercept-url pattern="/**" access="ROLE_USER"/>
    <http-basic />
</http>

如您所见，我正在使用自定义入口点，我有自己的 ErrorResponse 对象，我将以 json 格式添加到 http 响应中，请参见下面的代码：

    @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));   
    }
}

我用两个测试用例尝试了这种方法：

  1. 尝试在不提供基本身份验证标头的情况下使用一项服务：

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，但现在发送带有错误密码的基本身份验证标头：

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

<html> ... ugly html generated by tc server ... </html>

正如您在第一种情况下看到的那样，到达了入口点，并在正确处理异常的情况下执行了开始方法，并返回了 json 响应。但是，当密码错误时，这并没有发生。

在日志中，我发现两种情况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
...

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中的开始方法，但第二种情况抛出 BadCredentialsException 不会进入入口点。

这里奇怪的是，开始方法应该接收 AuthenticationException，但 AccessDeniedException 不是 AuthenticationException 但 BadCredentialsException 是，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

为什么调用 begin 方法时出现类型不正确的异常，以及为什么在具有正确类型的 BadCredentialsException 时不调用？

已编辑---由@Luke实现了答案

所描述的两个解决方案使用问题中显示的自定义 AuthenticationEntryPoint，需要修改配置，选择以下两个选项之一：

  1. 添加自定义 BASIC_AUTH_FILTER：

    <http create-session="stateless" entry-point-ref="authenticationFailedEntryPoint">
    <intercept-url pattern="/**" access="ROLE_USER"/>
    <custom-filter position="BASIC_AUTH_FILTER" ref="authenticationFilter" /> 
</http>

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

  2. 或将入口点添加到 http-basic 元素，IMO 是最干净的解决方案：

    <http create-session="stateless" entry-point-ref="authenticationFailedEntryPoint">
    <intercept-url pattern="/**" access="ROLE_USER"/>
    <http-basic entry-point-ref="authenticationFailedEntryPoint" />
</http>
4

1 回答 1

4

我认为问题在于，在基本身份验证失败后，直接从BasicAuthenticationFilter调用入口点，默认情况下它将是内置实现。

您还需要entry-point-ref在元素上设置属性http-basic来解决此问题。

或者，您可以将基本身份验证过滤器定义为 bean 并完全避免命名空间。

于 2013-10-27T12:56:17.730 回答