@EventListener监听注解的使用

桃扇骨 2024-03-17 22:54 69阅读 0赞

### controller类 ###

package com.example.poi.controller;
    
    import com.example.poi.entity.RegisterSuccessEvent;
    import org.springframework.context.ApplicationContext;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import javax.annotation.Resource;
    
    /**
     * @Author xu
     * @create 2023/7/5 01
     */
    
    @RestController
    @RequestMapping("/customDemo")
    public class DemoTwoController {
        
        
        @Resource
        private ApplicationContext applicationContext;
    
        @GetMapping("/publishEvent")
        public void publishEvent() {
        
            applicationContext.publishEvent(new RegisterSuccessEvent("张三"));
            System.out.println("******");
        }
    }

### 封装事件相关的对象 ###

package com.example.poi.entity;
    
    import lombok.Data;
    
    /**
     * @Author xu
     * @create 2023/7/19 16
     */
    @Data
    public class RegisterSuccessEvent {
        
    
        private String userName;
    
        public RegisterSuccessEvent(String userName) {
        
            this.userName = userName;
        }
    }

### 事件的监听逻辑 ###

package com.example.poi.config;
    
    import com.example.poi.entity.RegisterSuccessEvent;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.context.event.EventListener;
    import org.springframework.stereotype.Component;
    
    /**
     * @Author xu
     * @create 2023/7/19 16
     */
    @Slf4j
    @Component
    public class RegisterEventListener {
        
    
        @EventListener
        public void handleNotifyEvent(RegisterSuccessEvent event) {
        
            log.info("监听到用户:"+ event.getUserName()+"注册成功事件");
        }
    
    }