开发一个简易的Start

• 创建一个Springboot项目

• 导入依赖

• 整体项目结构图

• 删除build

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    // start的基本信息
    <groupId>com.xc</groupId>
    <artifactId>demo-start</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo-start</name>
    <description>demo-start</description>
    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.6.13</spring-boot.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
		// 自动提示配置文件
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

• 删除主启动类配置config

package com.xc.demostart;

import com.xc.demostart.demo.test;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;


@Configuration
@ConfigurationProperties(prefix = "xc.start")
@Data
@ComponentScan
public class DemoStartConfig {

    private String accessKey;

    private String secretKey;

    @Bean
    public test xcApiClient() {
        return new test(accessKey, secretKey);
    }

}

• 写上自己要实现的功能（我这里就简单实现以下返回自己配置的ak和sk）

package com.xc.demostart.demo;

/**
 * @author xc
 * @date 2023/4/8 19:25
 */
public class test {
    private String ak;

    private String sk;

    public  test(String ak,String sk) {
        this.ak = ak;
        this.sk = sk;
    }

    public String printAkSk() {
        return "ak: "+ak+"sk: "+sk;
    }
}

在resources下面新建包META-INF，新建配置文件spring.factories

# spring boot starter
org.springframework.boot.autoconfigure.EnableAutoConfiguration=com.xc.demostart.DemoStartConfig

然后mvn install后到本地仓库就可以测试用

• 测试

随便创建一个maven项目

在pom.xml中引入刚刚的start

<dependency>
            <groupId>com.xc</groupId>
            <artifactId>demo-start</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

在application.yml中配置自己ak，sk

xc:
  start:
    access-key: xcxc
    secret-key: 666

注意xc.start是刚刚在config配置文件中的prefix

@SpringBootTest
class TestStartApplicationTests {

    @Resource
    private DemoStartConfig demoStartConfig;
    @Test
    void contextLoads() {
        System.out.println(demoStartConfig.demoStart().printAkSk());
    }

}

运行后控制台输出

与我们直接写的配置相同，说明start开发成功