SqlSugar.SqlSugarException: 中文提示 : 连接数据库过程中发生错误，检查服务器是否正常连接字符串是否正确，错误信息：连接未关闭。 连接的当前状态为正在连接。

SqlSugar.SqlSugarException: 中文提示 :  连接数据库过程中发生错误，检查服务器是否正常连接字符串是否正确，错误信息：连接未关闭。 连接的当前状态为正在连接。DbType="SqlServer";ConfigId="". English Message : Connection open error . 连接未关闭。 连接的当前状态为正在连接。DbType="SqlServer";ConfigId=""     at SqlSugar.Check.Exception(Boolean isException, String message, String[] args)    at SqlSugar.AdoProvider.CheckConnectionAsync()    at SqlSugar.SqlServerProvider.GetCommandAsync(String sql, SugarParameter[] parameters)    at SqlSugar.AdoProvider.GetDataReaderAsync(String sql, SugarParameter[] parameters)    at SqlSugar.QueryableProvider`1.GetDataAsync[TResult](KeyValuePair`2 sqlObj)    at SqlSugar.QueryableProvider`1._ToListAsync[TResult]()    at SqlSugar.QueryableProvider`1.FirstAsync()    at Vue3View.Application.Users.UserService.GetUserById(Int64 id) in F:\\迅雷下载\\vue3-view-master\\Vue3View\\Vue3View.Application\\Users\\UserService.cs:line 196    at Vue3View.Controllers.UserController.GetUser() in F:\\迅雷下载\\vue3-view-master\\Vue3View\\Vue3View\\Controllers\\UserController.cs:line 121    at lambda_method19(Closure, Object)    at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(ActionContext actionContext, IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)    at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)    at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)    at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)    at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)    at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()  

 解决

偶发性错误，线程安全 ，偶发错误 – SqlSugar 5x – .NET果糖网