Question

我有一个包含三个项目的ASP.NET 5.0解决方案

MVC项目
数据访问项目
实体定义

尝试将项目从ASP.NET 5和EF 7的beta-8升级到RC1-final后，我得到以下错误（在我看过的任何地方都没有产生任何内容）。

****错误：错误CS1705汇编＆＃39; EntityFramework.Core＆＃39; with identity＆＃39; EntityFramework.Core，Version = 7.0.0.0，Culture = neutral，PublicKeyToken = adb9793829ddae60＆＃39;使用＆＃39; System.Linq.Expressions，Version = 4.0.11.0，Culture = neutral，PublicKeyToken = b03f5f7f11d50a3a＆＃39;它的版本高于引用的汇编版本System.Linq.Expressions＆＃39; with identity＆＃39; System.Linq.Expressions，Version = 4.0.0.0，Culture = neutral，PublicKeyToken = b03f5f7f11d50a3a＆＃39; ASS.DomainDataModel ****

我尝试通过软件包管理器控制台加载不同版本的System.Linq，针对所有三个项目，并从所有项目的project.json文件中删除System.Linq并将其重新添加，尝试不同的版本。我试图解决这个问题的时间越长，我越来越困惑。我想我错过了一些非常明显的东西......

正如所建议的，这里是三个project.json文件的内容

MVC项目：

{
  "webroot": "wwwroot",
  "version": "1.0.0-*",

  "dependencies": {
    "Microsoft.AspNet.Diagnostics": "1.0.0-rc1-final",
    "Microsoft.AspNet.IISPlatformHandler": "1.0.0-rc1-final",
    "Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
    "Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
    "Microsoft.AspNet.StaticFiles": "1.0.0-rc1-final",
    "Microsoft.Extensions.Logging.Debug": "1.0.0-rc1-final",
    "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-rc1-final",
    "System.Linq.Parallel": "4.0.1-beta-23516", 
    "ASS.DomainClasses": "1.0.0-*",
    "ASS.DomainDataModel": "1.0.0-*"
  },

  "commands": {
    "web": "Microsoft.AspNet.Server.Kestrel",
    "ef": "EntityFramework.Commands"
  },

  "frameworks": {
    "dnx451": {
      "dependencies": {
        "System.Linq.Expressions": "4.0.11-beta-23516"
      }
    },
    "dnxcore50": {
      "dependencies": {
        "System.Linq.Expressions": "4.0.10"
      }
    }
  },

  "exclude": [
    "wwwroot",
    "node_modules",
    "bower_components"
  ],
  "publishExclude": [
    "node_modules",
    "bower_components",
    "**.xproj",
    "**.user",
    "**.vspscc"
  ]
}

数据访问项目：

{
  "version": "1.0.0-*",
  "description": "ASS.DomainDataModel Class Library",
  "tags": [ "" ],
  "projectUrl": "",
  "licenseUrl": "",

  "frameworks": {
    "dnx451": {
      "dependencies": {
        "System.Linq.Expressions": "4.0.11-beta-23516"
      }
    },
    "dnxcore50": {
      "dependencies": {
      }
    }
  },

  "dependencies": {
    "ASS.DomainClasses": "1.0.0-*",
    "Microsoft.Extensions.PlatformAbstractions": "1.0.0-rc1-final",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0-rc1-final",
    "Microsoft.Extensions.Configuration.FileExtensions": "1.0.0-rc1-final",
    "Microsoft.Extensions.Configuration.Json": "1.0.0-rc1-final",
    "EntityFramework.Core": "7.0.0-rc1-final",
    "EntityFramework.Commands": "7.0.0-rc1-final",
    "EntityFramework.MicrosoftSqlServer": "7.0.0-rc1-final",
    "EntityFramework.Relational": "7.0.0-rc1-final"
  },

    "commands": {
    "ef": "EntityFramework.Commands"
  }
}

实体def项目：

{
  "version": "1.0.0-*",
  "description": "ASS.DomainClasses Class Library",
  "tags": [ "" ],
  "projectUrl": "",
  "licenseUrl": "",

  "frameworks": {
    "dnx451": {
      "dependencies": {
        "System.Linq.Expressions": "4.0.11-beta-23516"
      }
    },
    "dnxcore50": {
      "dependencies": {
        "Microsoft.CSharp": "4.0.1-beta-23516",
        "System.Collections": "4.0.11-beta-23516",
        "System.Linq.Expressions": "4.0.10",
        "System.Runtime": "4.0.21-beta-23516",
        "System.Threading": "4.0.11-beta-23516"
      }
    }
  }
}

Answer 1

project.json中"dependencies"和"frameworkAssemblies"之间存在细微差别。您的"dnx451"框架正在使用System.Linq.Expressions的打包版本。您更有可能需要指定框架程序集。（猜猜我不知道你的项目的确切要求。）

请参阅{{3}}

此外，这可能是由于ASS.DomainDataModel中的不兼容性。

＆＃39; EntityFramework.Core，Version = 7.0.0.0，使用＆＃39; System.Linq.Expressions，Version = 4.0.11.0

1 个答案: