FilterRegistrationBean

主要用来对servlet filter进行自定义，比如设置order

@Bean    public FilterRegistrationBean contextFilterRegistrationBean() {        FilterRegistrationBean registrationBean = new FilterRegistrationBean();        DemoFilter demoFilter = new DemoFilter();        registrationBean.setFilter(demoFilter);        registrationBean.setOrder(1);        return registrationBean;    }

包名

在1.4.0的时候，包名从org.springframework.boot.context.embedded.FilterRegistrationBean变为了import org.springframework.boot.web.servlet.FilterRegistrationBean