spring boot 配置Filter过滤器
参考:
Filter过滤器,Interceptor拦截器,ControllerAdvice,Aspect切片
1、通过 @WebFilter 注解来配置
写法一:
@Component
@WebFilter(urlPatterns = "/webapi/*", filterName = "authFilter")
public class AuthFilter implements Filter {
......
}
适用自定义过滤器。
写法二:
@Order(value = 0)
@WebFilter(filterName = "CAS Authentication Filter", urlPatterns = "/*", initParams = {
@WebInitParam(name = "casServerLoginUrl", value = "https://cas.xxxx.cn/login"),
@WebInitParam(name = "serverName", value = "http://app.yyy.com")
})
//自定义一个继承CAS过滤器的过滤器,不用具体实现也可以生效
public class CasAuthenticationFilter extends AuthenticationFilter {
}
适用第三方过滤器,比如客户端的CAS过滤器。
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;