（转）Springboot 中filter 注入对象

问题：我建立一个全局拦截器，当然，这是测试的时候建立的，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springboot，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：

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public FilterRegistrationBean filterProxy(){    FilterRegistrationBean registrationBean = new FilterRegistrationBean();    DelegatingFilterProxy httpBasicFilter = new DelegatingFilterProxy();    registrationBean.setFilter(httpBasicFilter);    Map<String,String> m = new HashMap<String,String>();    m.put("targetBeanName","logFilter");    m.put("targetFilterLifecycle","true");    registrationBean.setInitParameters(m);    List<String> urlPatterns = new ArrayList<String>();    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();
    }

转自：http://blog.csdn.net/u013030980/article/details/55270818#comments