我一直在使用.NET Core 1.0.1。我只想尝试启动并运行Hello World页面。在构建期间,我遇到了以下错误:
The type or namespace name 'Web' does not exist in the namespace 'System' (are you missing an assembly reference?)
我尝试将引用添加到我的project.json:
"dependencies": {
"Microsoft.NETCore.App": {
"version": "1.0.1",
"type": "platform"
},
"Microsoft.AspNetCore.Mvc": "1.0.1",
"Microsoft.AspNetCore.Routing": "1.0.1",
"Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
"Microsoft.AspNetCore.Server.Kestrel": "1.0.1",
"Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
"Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
"Microsoft.Extensions.Configuration.Json": "1.0.0",
"Microsoft.Extensions.Logging": "1.0.0",
"Microsoft.Extensions.Logging.Console": "1.0.0",
"Microsoft.Extensions.Logging.Debug": "1.0.0",
"Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
"Microsoft.AspNetCore.StaticFiles": "1.0.0",
"System.Web": "4.0.0" //Right here
}
但我收到错误:The dependency System.Web >= 4.0.0 could not be resolved
。我似乎无法像在C#console / dll库中那样正常添加引用。
我需要安装另一个实际包含system.web程序集的软件包吗?或者有没有办法手动添加此引用?
答案 0 :(得分:6)
在.NET Core中,特别是ASP.NET Core,再有 no System.Web。所有ASP.NET组件都位于Microsoft.AspNetCore.*
和Microsoft.Extensions.*
命名空间中。
例如,HttpContext
位于Microsoft.AspNetCore.Http
,Controller
位于Microsoft.AspNetCore.Mvc
。
我建议您阅读fundamentals of ASP.NET Core。