spring boot项目中使用filter过滤器示例

(urlPatterns = "/cs/*")
public class  implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        System.err.println("----------------------->过滤器被创建");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        String requestURI = request.getRequestURI();
        System.err.println("------------------------> "+"请求被拦截");
    }

    @Override
    public void destroy() {

    }
}

@SpringBootApplication
@ServletComponentScan
public class TrafficApplication {

    public static void main(String[] args) {
        SpringApplication.run(TrafficApplication.class, args);
    }

}