要求asp.net环境，并要在IIS里设置网站属性 可以用来限制图片等文件的盗链，0.32版可设置不限制域名 通过referrer判断，如果没有引用页返回真实文件，如果引用页的域名不是本网站域名则返回wbtbForbidden.jpg这个图片，文件不存在返回wbtbNotFound.jpg这个图片 用法：http://www.xmlasp.net/WBAL/-Asp. Net environmental requirements and to the installed IIS Web site attributes can be used to limit pictures of the Irvine document, version 0.32 is not set restrictions on domain names through referrer judgment, if not applied to the real page document, if the pages of the Web site domain name is not returned wbtbForbidden . jpg the photographs, the file does not exist to return to the Photo wbtbNotFound.jpg Usage : http://www.xmlasp.net/WBAL/