springboot中执行完某些逻辑后,才算bean加载完,applicationContext才加载完毕

核心思想

实现InitializingBean接口,重写afterPropertiesSet方法

范例代码

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.stereotype.Component;
@Slf4j
@Component
public class Demo implements InitializingBean {

    @Override
    public void afterPropertiesSet() throws Exception {
        log.info("开始休眠5min");
        Thread.sleep(1000 * 60 * 5);
        log.info("休眠5min结束");
    }
}

运行证明

[INFO] 2024-05-22 14:40:24.962 com.xxx.jscaffold.handler.Demo:[12][]- 开始休眠5min
[INFO] 2024-05-22 14:45:24.959 com.xxx.jscaffold.handler.Demo:[14][]- 休眠5min结束
[INFO] 2024-05-22 14:45:26.381 p6spy:[60][]-  Consume Time:60 ms 2024-05-22 14:45:26
 Execute SQL:SELECT 1

[INFO] 2024-05-22 14:45:26.887 com.jdl.jscaffold.MainApplication:[61][]- Started MainApplication in 308.167 seconds (JVM running for 309.04)

使用场景

可以定义一个sercie来实现InitializingBean接口,用于程序启动时加载元数据到内存中,如果没加载完毕,不算springContext成功结束。

posted @ 2024-05-22 14:52  SpecialSpeculator  阅读(22)  评论(0编辑  收藏  举报