在 IIS 7.0 中,应用程序池有两种运行模式:集成模式和经典模式. https://blog.csdn.net/hongwei_23/article/details/44300923 这里面添加一个 stackoverflow的简介: In classic mode IIS works h ISAPI extensions and ISAPI filters directly. And uses two pipe lines , one .x works just and you dont…