spring-boot创建starter项目

创建maven项目
引入编写starter所需要的spring依赖

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
            <version>2.2.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
            <version>2.2.12.RELEASE</version>
        </dependency>

1. 编写Properties类、主要用于接受spring-boot启动时候application.properties/yml文件的配置参数

package com.enna.test;

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

/**
 * @author DELL
 * @version 1.0
 * @date 2021/3/11 16:29
 */
@Component
@ConfigurationProperties(prefix = "test")
public class PropertyDemo {
    private String name;
    private String age;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
}

2. 编写AutoConfiguration配置文件

package com.enna.test;

import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * TODO
 *
 * @author DELL
 * @version 1.0
 * @date 2021/3/11 16:31
 */
@Configuration
@EnableConfigurationProperties(TestProperty.class)
public class TestAutoConfiguration {
        //currentUsers为自定义测试新建的对象
    @Bean
    public CurrentUsers users(TestProperty testProperty) {
        TestUsers testUsers = new TestUsers();
        System.out.println( "注入testUsers" );
        System.out.println( testUsers );
        return testUsers;
    }
}

3. 在resource目录下面创建META-INF/spring.factories文件

   
   让spring-boot能够扫描到autoconfiguration类
   

   至此starter简易demo编写完成，采用maven的package打包 然后丢入所需要的starter项目

   
   在所需要的项目里面引入、配置applicationProperties