Spring boot 配置Filter过滤器

 

1、通过 @WebFilter 注解来配置

@Component

@WebFilter(urlPatterns = "/webapi/*", filterName = "authFilter")

public class AuthFilter implements Filter {

......

}

 

 

2、通过 @Bean 注解来配置

我这个是写在带 @SpringBootApplication 注解的类里面的。

@Bean

public FilterRegistrationBean testFilterRegistration() {

FilterRegistrationBean registration = new FilterRegistrationBean(new TestFilter());

registration.addUrlPatterns("/webapi/*"); //

registration.addInitParameter("paramName", "paramValue"); //

registration.setName("testFilter");

return registration;

}

那如果有多个过虑器，怎么指定执行的顺序呢？

通过 registration.setOrder(1);  来设置，例如：

@Bean

public FilterRegistrationBean testFilterRegistration() {

FilterRegistrationBean registration = new FilterRegistrationBean(new TestFilter());

registration.addUrlPatterns("/webapi/*"); //

registration.addInitParameter("paramName", "paramValue"); //

registration.setName("testFilter");

registration.setOrder(1);

return registration;

}


@Bean

public FilterRegistrationBean authFilterRegistration() {

FilterRegistrationBean registration = new FilterRegistrationBean(new AuthFilter());

registration.addUrlPatterns("/webapi/*"); //

registration.addInitParameter("paramName", "paramValue"); //

registration.setName("authFilter");

registration.setOrder(2);

return registration;

}

 

注意：

1、如果指定了 Order 属性，执行的顺序与注册的顺序是无关的；

2、数字越小，优先级越高；

关于 @Order 注解

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