无解!只能使用IIS Express或者部署到服务器上的IIS能解决!
以下为解释:
http://stackoverflow.com/questions/5981309/asp-net-development-server-svg-file-serving-for-css-background-image
http://stackoverflow.com/questions/8575718/svg-is-not-working
http://serverfault.com/questions/359904/how-to-configure-iis-for-svg-and-web-testing-with-visual-studio
http://stackoverflow.com/questions/5924647/setting-mime-types-using-the-asp-net-development-server