我们正在使用Spring Security 3.0.5,Java 1.6和Tomcat 6.0.32。在我们的.xml配置文件中,我们得到了:
<form-login login-page="/index.html" default-target-url="/postSignin.html" always-use-default-target="true" authentication-failure-handler-ref="authenticationFailureHandler"/>
和我们的authenticationFailureHandler定义为:
authenticationFailureHandler
<beans:bean id="authenticationFailureHandler" class="org.springframework.security.web.authentication.ExceptionMappingAuthenticationFailureHandler"> <beans:property name="exceptionMappings"> <beans:props> <beans:prop key="org.springframework.security.authentication.BadCredentialsException">/index.html?authenticationFailure=true</beans:prop> </beans:props> </beans:property> </beans:bean>
爪哇
@RequestMapping(params={"authenticationFailure=true"}, value ="/index.html") public String handleInvalidLogin(HttpServletRequest request) { //... How can I get the username that was used??? // I've tried: Object username = request.getAttribute("SPRING_SECURITY_LAST_USERNAME_KEY"); Object username = request.getAttribute("SPRING_SECURITY_LAST_USERNAME"); // deprecated }
因此,我们将所有内容都定向BadCredentialsExceptions到index.html和IndexController。在中,IndexController我想获取username用于失败登录尝试的。我怎样才能做到这一点?
BadCredentialsExceptions
index.html
IndexController
username
好的,据我所知,答案竟然是非常简单的事情,没有经过大量讨论或记录。
这就是我要做的(在创建此类的任何地方都无需配置)…
import org.apache.log4j.Logger; import org.springframework.context.ApplicationListener; import org.springframework.security.authentication.event.AuthenticationFailureBadCredentialsEvent; import org.springframework.stereotype.Component; @Component public class MyApplicationListener implements ApplicationListener<AuthenticationFailureBadCredentialsEvent> { private static final Logger LOG = Logger.getLogger(MyApplicationListener.class); @Override public void onApplicationEvent(AuthenticationFailureBadCredentialsEvent event) { Object userName = event.getAuthentication().getPrincipal(); Object credentials = event.getAuthentication().getCredentials(); LOG.debug("Failed login using USERNAME [" + userName + "]"); LOG.debug("Failed login using PASSWORD [" + credentials + "]"); } }
我与Spring Security专家相距甚远,因此,如果有人读过此书,并且知道某个原因,我们就不应该这样做或知道我想听听它的更好方法。