TOC

前言

CommandLineRunner

接口在容器启动成功后最后一步调用，常用于应用程序启动后初始化操作，其在整个应用生命周期内只会执行一次。

具体应用

实现CommandLineRunner接口

Runner.java

import org.springframework.boot.CommandLineRunner;import org.springframework.stereotype.Component;@Componentpublic class Runner implements CommandLineRunner {@Overridepublic void run(String... args) throws Exception {/*** TODO:*/System.out.println(" Runner run ");}}

```
CommandLineRunner
```
会在
```
Spring Boot
```
容器加载之后执行

CommandLineRunner实现类的执行顺序

使用
```
@Order
```
注解定义
```
CommandLineRunner
```
的执行顺序

import org.springframework.boot.CommandLineRunner;import org.springframework.core.annotation.Order;import org.springframework.stereotype.Component;@Component@Order(1)public class RunnerOne implements CommandLineRunner {@Overridepublic void run(String... args) throws Exception {/*** TODO:*/System.out.println(" RunnerOne run ");}}

import org.springframework.boot.CommandLineRunner;import org.springframework.core.annotation.Order;import org.springframework.stereotype.Component;@Component@Order(2)public class RunnerTwo implements CommandLineRunner {@Overridepublic void run(String... args) throws Exception {/*** TODO:*/System.out.println(" RunnerTwo run ");}}