管理图片资源（上传图片、新建目录、修改项目和删除项目）、显示指定的图片、设置水印文字、设置水印图片、获取图片的像素等。-Management Photo Resources (upload a picture, a new directory, and modify items and delete items), indicating that the specified image, set the watermark text, set the watermark image, get t