1. 自定义springboot starter

(1) 在pom.xml进行如下配置

    <properties>
        <java.version>1.8</java.version>
        <spring-boot.version>2.1.7.RELEASE</spring-boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
            <version>${spring-boot.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <version>${spring-boot.version}</version>
        </dependency>
    </dependencies>

(2) 创建属性配置文件

package com.music.starter.configuration;

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties(prefix = "music")
public class MusicProperties {

    private Integer price;

    private String projectName;

    public Integer getPrice() {
        return price;
    }

    public void setPrice(Integer price) {
        this.price = price;
    }

    public String getProjectName() {
        return projectName;
    }

    public void setProjectName(String projectName) {
        this.projectName = projectName;
    }
}

(3) 创建业务类

package com.music.starter.service;

public class MusicService {

    private String projectName;

    private Integer price;

    public MusicService(String projectName, Integer price) {
        this.projectName = projectName;
        this.price = price;
    }

    public String getDetail() {
        return String.format("%s 项目的价格为: %s", projectName, price);
    }
}

(4) 创建配置类

package com.music.starter.configuration;

import com.music.starter.service.MusicService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
@ConditionalOnWebApplication
@EnableConfigurationProperties(MusicProperties.class)
public class MusicConfig {

    @Autowired
    private MusicProperties musicProperties;

    @Bean
    public MusicService musicService(){
        System.out.println("加载music");
        return new MusicService(musicProperties.getProjectName(), musicProperties.getPrice());
    }
}

(5) 在resources目录下创建文件夹META-INF及其文件spring.factories

# Auto Configure
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
com.music.starter.configuration.MusicConfig

(6) 在music-spring-boot-starter工程中执行mvn clean install 一个自定义的starter就可以使用了。

2. 使用自定义的starter

(1) 在项目里引入starter

        <dependency>
            <groupId>com.music</groupId>
            <artifactId>music-spring-boot-starter</artifactId>
            <version>0.0.1</version>
        </dependency>

(2) 在项目配置文件中进行参数配置

music:
  project-name: 音乐项目
  price: 305

(3) 在代码中调用starter里的业务

    @ApiOperation("测试")
    @GetMapping("/say")
    public String sayWhat(){
        return musicService.getDetail();
    }