springboot怎么静态加载@configurationProperties

//错误1：get\set都是静态方法
@Component
@ConfigurationProperties(prefix = "mobile")
public class MobileConfig
{
    public static Integer preview;

    public static Integer getPreview() {
        return preview;
    }

    public static void setPreview(Integer preview) {
        MobileConfig.preview = preview;
    }
}

//错误2：跟第一种差不多，只是用了lombok注解代替了get\set方法，get\set也都是静态方法
@Data
@Component
@ConfigurationProperties(prefix = "mobile")
public class MobileConfig
{
    public static Integer preview;
}

@Component
@ConfigurationProperties(prefix = "mobile")
public class MobileConfig
{
    public static Integer preview;

    public static Integer getPreview() {
        return preview;
    }

    public void setPreview(Integer preview) {
        MobileConfig.preview = preview;
    }
}

@Data
@Component
@ConfigurationProperties(prefix = "mobile")
public class MobileConfig
{
    public static Integer preview;

    public void setPreview(Integer preview) {
        MobileConfig.preview = preview;
    }
}