1. 实现ApplicationRunner接口, 重写run方法

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;


@Slf4j
@Component
@Order(2) //order 值越小越先执行
public class MyAppRunner implements ApplicationRunner {



    @Override
    public void run(ApplicationArguments args) {
        createHttpClient();
    }

    private void createHttpClient() {
        log.info("项目启动了, 执行--------ApplicationRunner");

        // TODO
    }
}

 

2. 实现CommandLineRunner接口, 重写run方法

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.CommandLineRunner;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

@Slf4j
@Component
@Order(3) //order 值越小越先执行
public class MyComRunner implements CommandLineRunner {


    @Override
    public void run(String... args) throws Exception {
        createHttpClient();
    }

    private void createHttpClient() {
        log.info("项目启动了, 执行--------CommandLineRunner");

        // TODO
    }
}

 

执行结果

ApplicationRunner和CommandLineRunner, 随便你实现哪一个接口都可以