详解springboot整合Listener的两种方式

发布时间：2020-10-14 23:06:05 作者：SUBEYZ
来源：脚本之家阅读：192

1.通过注解

编写启动类

package cn.bl;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
@SpringBootApplication
@ServletComponentScan
public class App {
 public static void main(String[] args) {
 SpringApplication.run(App.class, args);
 }
}

编写一个监听器

package cn.bl.listener;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
@WebListener
public class FirstListener implements ServletContextListener{
 @Override
 public void contextInitialized(ServletContextEvent sce) {
 System.out.println("init .. ");
 }
 @Override
 public void contextDestroyed(ServletContextEvent sce) {
 System.out.println("desroyed .. ");
 }
}

当执行App的时候

详解springboot整合Listener的两种方式

2.通过函数

package cn.bl.listener;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
public class SecondListener implements ServletContextListener{
 @Override
 public void contextInitialized(ServletContextEvent sce) {
 System.out.println("second servletListener init .. ");
 }
 @Override
 public void contextDestroyed(ServletContextEvent sce) {
 System.out.println("second servletListener destroy .. ");
 }
}

package cn.bl;


import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletListenerRegistrationBean;
import org.springframework.context.annotation.Bean;
import cn.bl.listener.SecondListener;
@SpringBootApplication
public class App2 {
 public static void main(String[] args) {
 SpringApplication.run(App2.class, args);
 }
 @Bean
 public ServletListenerRegistrationBean<SecondListener>getBean(){
 ServletListenerRegistrationBean<SecondListener>bean = new ServletListenerRegistrationBean<>(new SecondListener());
 return bean;
 }
}

总结

以上所述是小编给大家介绍的springboot整合Listener的两种方式，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对亿速云网站的支持！

详解springboot整合Listener的两种方式

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