小编典典

如何使用Spring Security从登录失败中获取用户名?

tomcat

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:

<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BadCredentialsExceptionsindex.htmlIndexController。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?


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2020-06-16

共1个答案

小编典典

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。

2020-06-16