Postgres 的实体框架生成器答案

【问题标题】：Entity Framework Generator For PostgresPostgres 的实体框架生成器
【发布时间】：2020-08-05 08:42:17
【问题描述】：

我在http://www.loresoft.com/Generate-ASP-NET-Web-API 找到了一篇不错的文章。我已经成功阅读并使用 SQL Server 数据库对其进行了测试。现在，我想将数据库引擎更改为 PostgreSQL，我已将数据库从 SQL Server 迁移到 PostgreSQL。

但是，当我执行时：

efg generate -c ""Host=localhost;Username=admin;Database=dbTest;Password=admin;Persist Security Info=True""

向我展示的控制台：

17:18:04 W Option file not found: generation.yml
17:18:04 I Using default options
17:18:04 D Creating database model factory for: SqlServer
17:18:04 I Loading database model ...
17:18:04 F Host terminated unexpectedly
System.ArgumentException: Keyword not supported: 'host'.
   at Microsoft.Data.Common.DbConnectionOptions.ParseInternal(Dictionary`2 parsetable, String connectionString, Boolean buildChain, Dictionary`2 synonyms, Boolean firstKey)
   at Microsoft.Data.Common.DbConnectionOptions..ctor(String connectionString, Dictionary`2 synonyms)
   at Microsoft.Data.SqlClient.SqlConnectionString..ctor(String connectionString)
   at Microsoft.Data.SqlClient.SqlConnectionFactory.CreateConnectionOptions(String connectionString, DbConnectionOptions previous)
   at Microsoft.Data.ProviderBase.DbConnectionFactory.GetConnectionPoolGroup(DbConnectionPoolKey key, DbConnectionPoolGroupOptions poolOptions, DbConnectionOptions& userConnectionOptions)
   at Microsoft.Data.SqlClient.SqlConnection.ConnectionString_Set(DbConnectionPoolKey key)
   at Microsoft.Data.SqlClient.SqlConnection.set_ConnectionString(String value)
   at Microsoft.Data.SqlClient.SqlConnection..ctor(String connectionString)
   at Microsoft.EntityFrameworkCore.SqlServer.Scaffolding.Internal.SqlServerDatabaseModelFactory.Create(String connectionString, DatabaseModelFactoryOptions options)
   at EntityFrameworkCore.Generator.CodeGenerator.GetDatabaseModel(IDatabaseModelFactory factory) in C:\projects\entityframeworkcore-generator\src\EntityFrameworkCore.Generator.Core\CodeGenerator.cs:line 371
   at EntityFrameworkCore.Generator.CodeGenerator.Generate(GeneratorOptions options) in C:\projects\entityframeworkcore-generator\src\EntityFrameworkCore.Generator.Core\CodeGenerator.cs:line 40
   at EntityFrameworkCore.Generator.GenerateCommand.OnExecute(CommandLineApplication application) in C:\projects\entityframeworkcore-generator\src\EntityFrameworkCore.Generator\GenerateCommand.cs:line 76
--- End of stack trace from previous location where exception was thrown ---
   at McMaster.Extensions.CommandLineUtils.Conventions.ExecuteMethodConvention.Invoke(MethodInfo method, Object instance, Object[] arguments)
   at McMaster.Extensions.CommandLineUtils.Conventions.ExecuteMethodConvention.OnExecute(ConventionContext context, CancellationToken cancellationToken)
   at McMaster.Extensions.CommandLineUtils.Conventions.ExecuteMethodConvention.<>c__DisplayClass0_0.<<Apply>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at McMaster.Extensions.CommandLineUtils.CommandLineApplication.ExecuteAsync(String[] args, CancellationToken cancellationToken)
   at McMaster.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args)
   at EntityFrameworkCore.Generator.Program.Main(String[] args) in C:\projects\entityframeworkcore-generator\src\EntityFrameworkCore.Generator\Program.cs:line 50

我想我错过了一些依赖包。但是，我不确定它是什么。

非常感谢

【问题讨论】：

标签： postgresql asp.net-core .net-core entity-framework-core

【解决方案1】：

我找到了解决方案，并决定将其发布在这里，因为它可能会在未来帮助其他人。

实际上，efg 命令将使用 SqlServer 提供程序，如果我们没有提及任何“提供程序”参数。因此，我将命令修改为：

efg generate -c "Host=localhost;Username=admin;Database=dbTest;Password=admin;Persist Security Info=True" -p PostgreSQL

【讨论】：