SpringBoot启动时自动执行指定方法的几种实现方式

import javax.annotation.PostConstruct;

@Component
public class UsePostConstruct {

    @PostConstruct
    public void init() {
        // 启动时自动执行的代码
    }
}

import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;

@Component
public class UseCommandLineRunner implements CommandLineRunner {

    @Override
    public void run(String... args) throws Exception {
        // 启动时自动执行的代码
    }
}

import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.context.event.EventListener;
import org.springframework.stereotype.Component;

@Component
public class UseEventListener {

    @EventListener
    public void onApplicationEvent(ContextRefreshedEvent event) {
        // 应用上下文初始化完毕后自动执行的代码
    }
}

import org.springframework.beans.factory.InitializingBean;

public class UseInitializingBean implements InitializingBean {

    @Override
    public void afterPropertiesSet() throws Exception {
        // 启动时自动执行的代码
    }
}

@Component
public class UseServletContextListener implements ServletContextListener {
    @Override
    public void contextInitialized(ServletContextEvent sce) {
    	// 启动时自动执行的代码
        ServletContextListener.super.contextInitialized(sce);
        
    }
}

@Component
@Slf4j
public class UseApplicationContextAware implements ApplicationContextAware {
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        // 启动时自动执行的代码
        
    }
}

@Component
public class UseStatic {

    static{
        // 启动时自动执行的代码
    }
}