AbpCore 执行迁移文件生成数据库报错 Could not find root folder of the web project!

背景介绍

    下载开源52abp项目（https://github.com/52ABP/LTMCompanyNameFree.YoyoCmsTemplate）进行修改项目名称

准备update-database 指令生成数据库，报错如下：

System.Exception: Could not find root folder of the web project!
   at YY.Frame.AbpCore.Web.WebContentDirectoryFinder.CalculateContentRootFolder() in G:ABP CoreGithubLTMCompanyNameFree.YoyoCmsTemplate-master（abp4.0.2）srcaspnet-coresrcYY.Frame.AbpCore.CoreWebWebContentFolderHelper.cs:line 46
   at YY.Frame.AbpCore.EntityFrameworkCore.YoyoCmsTemplateDbContextFactory.CreateDbContext(String[] args) in G:ABP CoreGithubLTMCompanyNameFree.YoyoCmsTemplate-master（abp4.0.2）srcaspnet-coresrcYY.Frame.AbpCore.EntityFrameworkCoreEntityFrameworkCoreYoyoCmsTemplateDbContextFactory.cs:line 15
   at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(Func`1 factory)
   at Microsoft.EntityFrameworkCore.Design.Internal.DbContextOperations.CreateContext(String contextType)
   at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Could not find root folder of the web project!

仔细看报错信息

  调用var configuration = AppConfigurations.Get(WebContentDirectoryFinder.CalculateContentRootFolder());这地方抛出的

CalculateContentRootFolder

 public static string CalculateContentRootFolder()
        {
            var coreAssemblyDirectoryPath = Path.GetDirectoryName(typeof(YoyoCmsTemplateCoreModule).GetAssembly().Location);
            if (coreAssemblyDirectoryPath == null)
            {
                throw new Exception("Could not find location of YY.Frame.AbpCore.Core assembly!");
            }

            var directoryInfo = new DirectoryInfo(coreAssemblyDirectoryPath);

     while (!DirectoryContains(directoryInfo.FullName, "YY.Frame.AbpCore.sln"))
            {
                if (directoryInfo.Parent == null)
                {
                    throw new Exception("Could not find content root folder!");
                }

                directoryInfo = directoryInfo.Parent;
            }

            var webMvcFolder = Path.Combine(directoryInfo.FullName, "src", "YY.Frame.AbpCore.Web.Mvc");
            if (Directory.Exists(webMvcFolder))
            {
                return webMvcFolder;
            }

            var webHostFolder = Path.Combine(directoryInfo.FullName, "src", "YY.Frame.AbpCore.Web.Host");
            if (Directory.Exists(webHostFolder))
            {
                return webHostFolder;
            }

            throw new Exception("Could not find root folder of the web project!");
        }

看完上面代码，把目录抛出来看看

 不难发现dll都生成在netcoreapp2.1 目录下，并没有在src文件夹

 解决方法把CalculateContentRootFolder方法中src目录去掉 

 public static string CalculateContentRootFolder()
        {
            var coreAssemblyDirectoryPath = Path.GetDirectoryName(typeof(YoyoCmsTemplateCoreModule).GetAssembly().Location);
            if (coreAssemblyDirectoryPath == null)
            {
                throw new Exception("Could not find location of YY.Frame.AbpCore.Core assembly!");
            }

            var directoryInfo = new DirectoryInfo(coreAssemblyDirectoryPath);

           // throw new Exception(directoryInfo.FullName);


            while (!DirectoryContains(directoryInfo.FullName, "YY.Frame.AbpCore.sln"))
            {
                if (directoryInfo.Parent == null)
                {
                    throw new Exception("Could not find content root folder!");
                }

                directoryInfo = directoryInfo.Parent;
            }

            var webMvcFolder = Path.Combine(directoryInfo.FullName, "", "YY.Frame.AbpCore.Web.Mvc");
            if (Directory.Exists(webMvcFolder))
            {
                return webMvcFolder;
            }

            var webHostFolder = Path.Combine(directoryInfo.FullName, "", "YY.Frame.AbpCore.Web.Host");
            if (Directory.Exists(webHostFolder))
            {
                return webHostFolder;
            }

            throw new Exception("Could not find root folder of the web project!");
        }

 正常可以生成迁移文件