改造后的TDBImage: 支持jpeg(且只支持)图像存储到数据库，解决了bmp图像占用数据库空间的问题-After transformation TDBImage : support jpeg (which only supports) image storage to the database, solving bmp images occupy space in the database

显示JPEG图片 显示JPEG图片 显示JPEG图片-Display JPEG picture display JPEG picture display JPEG picture display JPEG pictures