Question

.net 程序部署 报错

Server Error in '/' Application.
Could not load file or assembly 'System.Web.Http.WebHost, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. 系统找不到指定的文件。
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly 'System.Web.Http.WebHost, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. 系统找不到指定的文件。

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

请问这到底是为什么？ 从没遇见过 以前用sqlsever 现在用mysql 是数据库连接问题 还是其他什么问题？

Answer 1

有dll找不到导致的，可能是部署环境与你的开发环境不一致。最简单的办法就是从你的开发环境放一份过去，可以在引用里找到System.Web.Http.WebHost，属性，复制到本地，这样它就出现在你的bin目录下了，一起部署到服务器上试试。