使用组件注册方式整合Filter

package com.itheima.servletComponent;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.springframework.stereotype.Component;

@Component
public class MyFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
            throws IOException, ServletException {
        System.out.println("hello MyFilter");
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {

    }
}

package com.itheima.config;

import java.util.Arrays;

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.itheima.servletComponent.MyFilter;
import com.itheima.servletComponent.MyServlet;

@Configuration
public class ServletConfig {
//    注册Servlet组件
    @Bean
    public ServletRegistrationBean<MyServlet> getServlet(MyServlet myServlet) {
        ServletRegistrationBean<MyServlet> registrationBean = new ServletRegistrationBean<MyServlet>(myServlet, "/myServlet");
        return registrationBean;
    }
    
    // 注册Filter组件
    @Bean
    public FilterRegistrationBean<MyFilter> getFilter(MyFilter filter) {
        FilterRegistrationBean<MyFilter> registrationBean = new FilterRegistrationBean<MyFilter>(filter);
        registrationBean.setUrlPatterns(Arrays.asList("/toLoginPage", "/myFilter"));
        return registrationBean;
    }
}