Question

我在.NET Core中创建了一个简单的控制台应用程序，其中EF Core从只能通过VPN连接访问的服务器中执行SQL Server存储过程。我能够自己运行该应用程序，但是启动该容器时，该容器始终存在，并引发网络错误。

URL指向工具容器：https://docs.microsoft.com/en-us/dotnet/core/docker/build-container?tabs=windows

上下文：密码也包含特殊字符

protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
    optionsBuilder.UseSqlServer(
@"Data Source=###.##.#.##\sql_dev,-#####;Initial Catalog=DBNAME;Enlist=True;User ID=UID;Password=PWD;");
}

我使用以下方式标识了IP和端口：

SELECT
   CONNECTIONPROPERTY('local_net_address') AS local_net_address,
   CONNECTIONPROPERTY('local_tcp_port') AS local_tcp_port

执行该过程的命令：

context.Database.ExecuteSqlCommand("EXEC dbo.spToBExecuted @Param='Value'");

我能够成功创建容器，但无法启动容器，它退出并显示以下错误消息：

请帮助我解决问题。（提供者：TCP Provider，错误：25-连接字符串无效），如果VPN与此有关，也需要确认。

> Unhandled exception. Microsoft.Data.SqlClient.SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 25 - Connection string is not valid)
>
> at Microsoft.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, Boolean applyTransientFaultHandling, String accessToken, DbConnectionPool pool, SqlAuthenticationProviderManager sqlAuthProviderManager)  
> at Microsoft.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)  
> at Microsoft.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)  
> at Microsoft.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)  
> at Microsoft.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)  
> at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)  
> at Microsoft.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)  
> at Microsoft.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
    at Microsoft.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
    at Microsoft.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
    at Microsoft.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
    at Microsoft.Data.SqlClient.SqlConnection.Open()
    at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(Boolean errorsExpected)
    at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.Open(Boolean errorsExpected)
    at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteNonQuery(RelationalCommandParameterObject parameterObject)
    at Microsoft.EntityFrameworkCore.RelationalDatabaseFacadeExtensions.ExecuteSqlCommand(DatabaseFacade databaseFacade, RawSqlString sql, IEnumerable`1 parameters)
    at Microsoft.EntityFrameworkCore.RelationalDatabaseFacadeExtensions.ExecuteSqlCommand(DatabaseFacade databaseFacade, RawSqlString sql, Object[] parameters)
    at NetCore.Docker.Program.Main(String[] args) in C:\Users\UName\Documents\projects\App\Program.cs:line 16
    
> ClientConnectionId:00000000-0000-0000-0000-000000000000

请帮助我解决问题：(provider: TCP Provider, error: 25 - Connection string is not valid)，还需要确认VPN是否与此有关。

Answer 1

您使用verbatim string literal作为连接字符串，因此不需要转义反斜杠字符。

尝试使用以下内容代替（注意单个反斜杠）：

man tac

Answer 2

切换到Windows容器后，我设法成功启动了容器。

引荐网址： https://docs.microsoft.com/en-us/virtualization/windowscontainers/quick-start/set-up-environment?tabs=Windows-10-Client

启动dotnet核心控制台应用程序的Docker容器时出现网络问题

2 个答案: