Sringboot 自定义启动器

开门见山：

1、创建项目：

2、配置pom文件

autoconfigure模块：（引入starter和processor依赖）

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

    4.0.0

    cn.sam.antass
    antass-spring-boot-starter-autoconfigure
    1.0-SNAPSHOT

    
        org.springframework.boot
        spring-boot-starter-parent
        2.3.2.RELEASE
        
    

    
        
            org.springframework.boot
            spring-boot-starter
        
        
            org.springframework.boot
            spring-boot-configuration-processor
        
    

starter模块：（引入“antass-spring-boot-starter-autoconfigure”依赖）

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

    4.0.0

    cn.sam.antass
    antass-spring-boot-starter
    1.0-SNAPSHOT

    
        
            cn.sam.antass
            antass-spring-boot-starter-autoconfigure
            1.0-SNAPSHOT
        
    

3、项目文件：

AntassProperties:

@ConfigurationProperties(prefix = "antass.config")
public class AntassProperties {
    private Boolean enable;

    public Boolean getEnable() {
        return enable;
    }

    public void setEnable(Boolean enable) {
        this.enable = enable;
    }
}

AntassService:

public class AntassService {
    AntassProperties properties;

    public Boolean config() {
        return properties.getEnable();
    }

    public AntassProperties getProperties() {
        return properties;
    }

    public void setProperties(AntassProperties properties) {
        this.properties = properties;
    }
}

AntassAutoConfiguration:

@Configuration
@ConditionalOnWebApplication
@EnableConfigurationProperties(AntassProperties.class)
public class AntassAutoConfiguration {
    @Autowired
    private AntassProperties properties;

    @Bean
    public AntassService antassService() {
        AntassService service = new AntassService();
        service.setProperties(properties);
        return service;
    }
}

3、新建META文件（resources\META-INF\spring.factories），配置自动加载类

# Auto Configure
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
cn.sam.antass.AntassAutoConfiguration

4、将antass-spring-boot-starter-autoconfigure和antass-spring-boot-starter模块按顺序安装进maven仓库

5、再其它项目中引入：

        cn.sam.antass
        antass-spring-boot-starter
        1.0-SNAPSHOT

6、配置：(application.yml)

antass:
  config:
    enable: false

7、使用：

@Autowired
private AntassService antassService;

8、测试：

@GetMapping("/antass")
public String testAntass() {
    return String.valueOf(antassService.config());
}