spring 项目中在类中注入静态字段

//文件上传指定上传位置
//resource-dev.properties 有如下参数
#upload
UPLOAD_PATH=D:\\home\\images
STATIC_URL=http://127.0.0.1/images/upload/

@Component
@PropertySource("classpath:dev/resource-dev.properties")
public class ConstantsFilename {
    //Upload常量

    public static String UPLOAD_PATH;
    public static String STATIC_URL;

    public String getUploadPath() {
        return UPLOAD_PATH;
    }

//将 set 方法的 static 去掉
    @Value("${UPLOAD_PATH}")
    public void setUploadPath(String uploadPath) {
        UPLOAD_PATH = uploadPath;
    }

    public String getStaticUrl() {
        return STATIC_URL;
    }

//将 set 方法的 static 去掉
    @Value("${STATIC_URL}")
    public void setStaticUrl(String staticUrl) {
        STATIC_URL = staticUrl;
    }
}