Java程序启动时初始化数据的四种方式

import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;

/**
 * @Author yangxihui
 * @Date 2023-11-29 15:06
 * @Description
 */
@Component
public class MyInitTest {

    @PostConstruct
    public void init(){
        System.out.println("------------init");
    }
}

import org.springframework.beans.factory.InitializingBean;
import org.springframework.stereotype.Component;

/**
 * @Author yangxihui
 * @Date 2023-11-29 15:06
 * @Description
 */
@Component
public class MyInitTest implements InitializingBean{

    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.println("------------init");
    }
}

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

/**
 * @Author yangxihui
 * @Date 2023-11-29 15:24
 * @Description
 */
@Component
public class MyInitTest implements CommandLineRunner {
    @Override
    public void run(String... args) throws Exception {
        System.out.println("------------init");
    }
}

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class LoginApplication {

	public static void main(String[] args) {
		SpringApplication.run(LoginApplication.class, args);
		System.out.println("------------init");
	}

}