自定义简单sprin-boot-starter

 

自定义简单sprin-boot-starter

 新建IDEA一个空项目

 

空项目里新建模块新建maven空项目主要为了引入自动配置包

 

空项目里新建模块spring-boot项目做自动配置

 

maven项目引入自动配置包坐标

 

启动项目pom

 <groupId>com.xiaocheng</groupId>
    <artifactId>hello-spring-boot-starter</artifactId>
    <version>1.0</version>
    <dependencies>
        <dependency>
            <groupId>com.xiaocheng</groupId>
            <artifactId>hello-spring-boot-starter-autoconfigure</artifactId>
            <version>0.0.1</version>
        </dependency>
    </dependencies>

 

自动配置项目pom

<groupId>com.xiaocheng</groupId>
    <artifactId>hello-spring-boot-starter-autoconfigure</artifactId>
    <version>0.0.1</version>
    
    <name>hello-spring-boot-starter-autoconfigure</name>
    <description>hello-spring-boot-starter-autoconfigure</description>
    <properties>
        <java.version>15</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
<!--        在自定义starter的pom文件中加入如下依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

 

@Configuration
@EnableConfigurationProperties(HelloProperties.class)//加载配置类
public class HelloServiceAutoConfiguration {

    @Bean
    @ConditionalOnMissingBean(HelloService.class)//判断没有该类则把该类放入spring
    public HelloService helloSerivce(){
        return new HelloService();
    }
}

 

@ConfigurationProperties("hello")
public class HelloProperties {
    private String front;
    private String queen ;

    public String getFront() {
        return front;
    }

    public void setFront(String front) {
        this.front = front;
    }

    public String getQueen() {
        return queen;
    }

    public void setQueen(String queen) {
        this.queen = queen;
    }
}

 

public class HelloService {
    @Autowired
    HelloProperties helloProperties;
    public String hello(String str) {
    return helloProperties.getFront() + str + helloProperties.getQueen();
    }

}

 

资源文件下新建META-INF

 

META-INF下建spring.factories

 

项目启动加载该类

# Auto Configure
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
  com.xiaocheng.auto.HelloServiceAutoConfiguration

 

完成后记得maven

install发布本地仓库/deploy发布中央仓库

 

 

yaml可以 赋值

 

 

 

 

 

OK了