<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <!--如果原先是Maven项目，不是Spring Boot项目，则这个Parent依赖需要加上-->

  <parent>

    <groupId>org.springframework.boot</groupId>

    <artifactId>spring-boot-starter-parent</artifactId>

    <version>2.1.1.RELEASE</version>

    <relativePath/> <!-- lookup parent from repository -->

  </parent>

  <groupId>my</groupId>

  <artifactId>SpringShellDemo</artifactId>

  <version>1.0-SNAPSHOT</version>

  <name>SpringShellDemo</name>

  <!-- FIXME change it to the project's website -->

  <url>http://www.example.com</url>

  <properties>

    <java.version>1.8</java.version>

  </properties>

  <!--下面是依赖项-->

  <dependencies>

    <dependency>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter-web</artifactId>

      <version>2.1.1.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter-test</artifactId>

      <version>2.1.1.RELEASE</version>

      <scope>test</scope>

    </dependency>

    <dependency>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter</artifactId>

      <version>2.1.1.RELEASE</version>

    </dependency>

    <dependency>

      <groupId>org.springframework.shell</groupId>

      <artifactId>spring-shell-starter</artifactId>

      <version>2.0.0.RELEASE</version>

    </dependency>

  </dependencies>

  <!--添加Spring BootMaven插件-->

  <build>

    <plugins>

      <plugin>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-maven-plugin</artifactId>

        <version>2.0.0.RELEASE</version>

      </plugin>

    </plugins>

  </build>

</project>

package command;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class DemoApplication {

    public static void main(String[] args) {

        SpringApplication.run(DemoApplication.class, args);

    }

}

package command;

import org.springframework.shell.standard.ShellComponent;

import org.springframework.shell.standard.ShellMethod;

@ShellComponent

public class MyCommandDemo {

    @ShellMethod("Add two intergers together.")

    public int add(int a,int b){

        return a+b;

    }

}

mvn clean install -DskipTests：跳过测试，直接安装Install

java -jar target\**.jar(安装的jar包名称):执行jar包