我需要在Vaadin中添加一个过滤器来拦截所有请求

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import java.io.IOException;

@WebFilter("/*")
public class MyFilter implements Filter {
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        // 在请求到达之前执行的操作
        // ...

        // 调用下一个过滤器或目标资源
        chain.doFilter(request, response);

        // 在请求处理完成后执行的操作
        // ...
    }
}

import com.vaadin.flow.component.dependency.HtmlImport;
import com.vaadin.flow.component.dependency.JsModule;
import com.vaadin.flow.component.dependency.StyleSheet;
import com.vaadin.flow.component.page.AppShellConfigurator;
import com.vaadin.flow.component.page.Push;
import com.vaadin.flow.component.page.Viewport;
import com.vaadin.flow.router.Route;
import com.vaadin.flow.server.PWA;
import com.vaadin.flow.server.VaadinServlet;
import com.vaadin.flow.server.VaadinServletConfiguration;
import com.vaadin.flow.server.VaadinServletService;
import com.vaadin.flow.server.VaadinServletSessionSetup;
import com.vaadin.flow.server.VaadinSession;
import com.vaadin.flow.theme.Theme;
import com.vaadin.flow.theme.lumo.Lumo;

import javax.servlet.annotation.WebListener;
import javax.servlet.annotation.WebServlet;

@Push
@Viewport("width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes")
@PWA(name = "My App", shortName = "My App")
@Theme(value = Lumo.class, variant = Lumo.DARK)
@HtmlImport("frontend://styles/shared-styles.html")
@JsModule("./styles/shared-styles.js")
@StyleSheet("frontend://styles/main.css")
@StyleSheet("frontend://styles/shared-styles.css")
@Route("")
public class MainView extends AppShellConfigurator implements RouterLayout {

    public MainView() {
        // ...
    }

    @WebServlet(value = "/*", asyncSupported = true)
    @VaadinServletConfiguration(productionMode = false, ui = MainView.class)
    public static class Servlet extends VaadinServlet {
        @Override
        protected void servletInitialized() throws ServletException {
            super.servletInitialized();

            // 注册过滤器
            getService().addSessionInitListener(new VaadinServletService.SessionInitListener() {
                @Override
                public void sessionInit(VaadinSessionInitEvent event) throws ServiceException {
                    event.getSession().addRequestHandler(new RequestHandler() {
                        @Override
                        public boolean handleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response) throws IOException {
                            return false;
                        }
                    });
                }
            });
        }
    }
}

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
    // 在请求到达之前执行的操作
    // ...

    // 调用下一个过滤器或目标资源
    chain.doFilter(request, response);

    // 在请求处理完成后执行的操作
    // ...
}