springboot项目启动后执行方法

1.CommandLineRunner ：

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

@Component
public class MyCommandLineRunner implements CommandLineRunner{
    @Override
    public void run(String... var1) throws Exception{
        System.out.println("Runner!");
    }
}

2.ApplicationRunner :

import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.stereotype.Component;

@Component
public class MyApplicationRunner implements ApplicationRunner {
    @Override
    public void run(ApplicationArguments var1) throws Exception{
        System.out.println("Runner!");
    }
}

如果想要指定启动方法执行的顺序，可以通过实现org.springframework.core.Ordered接口或者使用org.springframework.core.annotation.Order注解来实现。

1.Ordered接口：

import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;

@Component
public class MyApplicationRunner implements ApplicationRunner,Ordered{
    @Override
    public int getOrder(){
        return 1;//通过设置这里的数字来知道指定顺序
    }

    @Override
    public void run(ApplicationArguments var1) throws Exception{
        System.out.println("Runner!");
    }
}

2.Order注解实现方式：

import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

@Component
@Order(value = 1)
public class MyApplicationRunner implements ApplicationRunner{

    @Override
    public void run(ApplicationArguments var1) throws Exception{
        System.out.println("Runner!");
    }
}