Springboot继承Filter过滤器的两种方法

第一种
项目目录如下


下面是MyFilter类

package com.example.demo;

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 javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;

import org.springframework.core.annotation.Order;
@Order(1)
@WebFilter(filterName = “myfilter”,urlPatterns = “/aa”)
public class MyFilter implements Filter{

 @Override
public void init(FilterConfig filterConfig) throws ServletException {
	// TODO Auto-generated method stub
	Filter.super.init(filterConfig);
}

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
		throws IOException, ServletException {
	 HttpServletRequest request1 = (HttpServletRequest) request;
        System.out.println(request1.getRequestURI()+"MyName");
        chain.doFilter(request,response);
	
}

@Override
public void destroy() {
	// TODO Auto-generated method stub
	Filter.super.destroy();
}

}
启动后 浏览器输入

控制台打印出来了

第二种：
这里
启动类

下面是自定义的一个MyFilter
package com.example.demo;

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 javax.servlet.http.HttpServletRequest;
public class MyFilter implements Filter{

 @Override
public void init(FilterConfig filterConfig) throws ServletException {
	// TODO Auto-generated method stub
	Filter.super.init(filterConfig);
}

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
		throws IOException, ServletException {
	 HttpServletRequest request1 = (HttpServletRequest) request;
        System.out.println(request1.getRequestURI()+"MyName");
        chain.doFilter(request,response);
	
}

@Override
public void destroy() {
	// TODO Auto-generated method stub
	Filter.super.destroy();
}

}

下面是一个fitler的一个注册类
package com.example.demo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class TestFilter {

@Bean
public FilterRegistrationBean testFilterRegistrationBean(){
    FilterRegistrationBean registrationBean = new FilterRegistrationBean();
    registrationBean.setFilter(new MyFilter());
    List a = new ArrayList<>();
    a.add("/bb");
    registrationBean.setUrlPatterns(a);
    Map map = new HashMap<>();
    map.put("111","222");
    registrationBean.setInitParameters(map);
    registrationBean.setName("filter");
    return registrationBean;
}

}

然后启动后在浏览器中输入

控制台中打印