问题：我建立一个全局拦截器，当然，这是的时候建立的，我把它命名为LogFilter，它继承了Filter，web应用启动的顺序是：listener->filter->servlet，而因为项目应用了boot，所以我们项目启动时，先初始化listener，因此注解的bean会被初始化和注入；然后再来就filter的初始化，再接着才到我们的dispathServlet的初始化，因此，当我们需要在filter里注入一个注解的bean时，就会注入失败，因为filter初始化时，注解的bean还没初始化，没法注入。

那么，解决方法如下：

public FilterRegistrationBean filterProxy(){   FilterRegistrationBean registrationBean = new FilterRegistrationBean();   DelegatingFilterProxy httpBasicFilter = new DelegatingFilterProxy();   registrationBean.setFilter(httpBasicFilter);   Map
     
       m = new HashMap
      
       ();   m.put("targetBeanName","logFilter");   m.put("targetFilterLifecycle","true");   registrationBean.setInitParameters(m);   List
       
         urlPatterns = new ArrayList
        
         ();   urlPatterns.add("/*");   registrationBean.setUrlPatterns(urlPatterns);   return registrationBean;}
        
       
      
     

这样你就可以在LogFilter里面添加@Autowired下的bean了。

public class LogFilter implements Filter {    @Autowired    @Qualifier(value="rztRabbitTemplate")    private RabbitTemplate rabbitTemplate;

@Bean    public FilterRegistrationBean securityFilter() {        FilterRegistrationBean registration = new FilterRegistrationBean();        registration.setFilter(new DelegatingFilterProxy("SecurityFilter"));        registration.addInitParameter("targetFilterLifecycle", "true");        registration.addUrlPatterns("/*");        registration.setOrder(102);        return registration;    }        @Bean(name = "SecurityFilter")    public SecurityFilter getSecurityFilter(){        return new SecurityFilter();    }