SpringBoot-配置文件属性注入-2种方式

@Component
@Data
public class PropertyBean {
    @Value("${datasource.url}")
    private String url;
    @Value("${datasource.username}")
    private String userName;
}

@Component
@Configuration
@EnableAutoConfiguration
public class PropertyBeanUtil {

    @Bean
    @ConfigurationProperties(prefix = "datasource")
    public PropertyBean propertyBean() {
        return new PropertyBean();
    }

}

datasource.username = admin
datasource.url = /hello/world