public class MyFilter implements Filter {
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        // 對(duì)request或 response 進(jìn)行處理
        // 調(diào)用filter鏈中的下一個(gè)filter
        filterChain.doFilter(servletRequest,servletResponse);
    }
}

public class MyFilter extends OncePerRequestFilter {
    /**此處不能@override doFilter方法
     *  因?yàn)镺ncePerRequestFilter中 doFilter方法已經(jīng)是final
     *
     */
    //自定義處理方法
    public void interrupt(HttpServletResponse response, ErrorCode code){
        //此處對(duì)response進(jìn)行處理
    }
    //重載OnecePerRequestFilter方法
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain){
    //調(diào)用自定義處理方法
    interrupt(response,code);
    //對(duì)request 、response進(jìn)行處理
    }
}

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
@Configuration
public class MyFilterConfig {
   @Bean
    public FilterRegistrationBean myFilterBean(MyFilter filter) {
        FilterRegistrationBean<Filter> filterRegistrationBean = new FilterRegistrationBean<>();
        filterRegistrationBean.setFilter(filter);//設(shè)置為自定義的過(guò)濾器MyFilter
        filterRegistrationBean.addUrlPatterns("/*");//攔截所有請(qǐng)求
        filterRegistrationBean.setOrder(1);//優(yōu)先級(jí)為1
        return filterRegistrationBean;
    }
    //可注冊(cè)多個(gè)自定義的過(guò)濾器
}

<filter>
    <filter-name>myFilter</filter-name>
    <filter-class>com.text.filter.myFilter</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>myFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>