Spring Boot整合shiro，出现UnavailableSecurityManagerException 异常

版权声明： https://blog.csdn.net/qq_32157851/article/details/80816559

问题描述：

由于在java过滤器中通过User token = (User) SecurityUtils.getSubject().getPrincipal();获取当前的登录用户的信息，报UnavailableSecurityManagerException这个异常。

spring整合shiro出现UnavailableSecurityManagerException在网上查出的问题都是没有配置DelegatingFilterProxy或者DelegatingFilterProxy的配置顺序错了，对应的解决办法就是在web.xml上添加DelegatingFilterProxy。

<filter>
    <filter-name>shiroFilter</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    <async-supported>true</async-supported>
    <init-param>
             <param-name>targetFilterLifecycle</param-name>
             <param-value>true</param-value>
     </init-param>
</filter>
<filter-mapping>
    <filter-name>shiroFilter</filter-name>
    <url-pattern>/*</url-pattern>
 </filter-mapping>

现在是spring boot框架里没有web.xml，所以解决起来直接写代码就可以了

@Configuration
public class ShiroConfiguration {
@Bean
public FilterRegistrationBean delegatingFilterProxy(){
    FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
    DelegatingFilterProxy proxy = new DelegatingFilterProxy();
    proxy.setTargetFilterLifecycle(true);
    proxy.setTargetBeanName("shiroFilter");
    filterRegistrationBean.setFilter(proxy);
    return filterRegistrationBean;
}

@Bean("shiroFilter")
public ShiroFilterFactoryBean shiroFilterFactoryBean() {
    ShiroFilterFactoryBean filterFactoryBean = new ShiroFilterFactoryBean();
    .......
    return filterFactoryBean;
}
}