1.通過注解
編寫啟動類
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);
}
}
編寫一個監聽器
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 .. ");
}
}
當執行App的時候
2.通過函數
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;
}
}
總結
以上所述是小編給大家介紹的springboot整合Listener的兩種方式，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對億速云網站的支持！
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