springboot配置过滤器的两种方式
1.使用注解@WebFilter、@Component。springboot将会自动注册过滤器,但是使用了@Component注解之后,自测urlPatterns将会无效,不管你写成什么拦截地址,最后查看控制台日志,过滤器注册的地址都是"/*"
@Component
@WebFilter(
filterName = "AuthFilter",
urlPatterns = {"/*"}
)
public class AuthFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain) throws IOException, ServletException {
}
@Override
public void destroy() {
}
}
2.使用注册Bean的方式,可以指定过滤器的过滤地址,还可通过Order指定过滤顺序。setOrder()的值越小优先级越高
/**
* 需要配置的bean
*/
@Configuration
public class ProjectConfiguration {
@Bean
public FilterRegistrationBean registrationProjectFilter() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter(this.getProjectFilter());
registration.addUrlPatterns("/project/*");
registration.setOrder(2);
return registration;
}
@Bean
public ProjectFilter getProjectFilter(){
return new ProjectFilter();
}
@Bean
public FilterRegistrationBean registrationAuthFilter() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter(this.getAuthFilter());
registration.addUrlPatterns("/*");
registration.setOrder(1);
return registration;
}
@Bean
public AuthFilter getAuthFilter(){
return new AuthFilter();
}
}