springboot整合listener方式一

package com.test;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;

@SpringBootApplication
@ServletComponentScan//会扫描@WebServlet的类并实例化该类
public class App {
	public static void main(String[] args) {
		SpringApplication.run(App.class, args);
	}
}
package com.test;

impor