Dapper.Contrib插入异常

Question

在执行插入操作应用程序时，在asp.net核心应用程序上抛出错误。以前的应用程序是asp.net核心1.1最近我更新到asp.net core 2.0

using (var con = _connectionFactory.CreateConnection())
{
    con.Open();
    using (var transaction = con.BeginTransaction())
    {
        try
        {
            if (regions.Any())
            {

                con.Insert(regions.Select(c =>
                {
                    c.UserId = userId;
                    return c;
                }), transaction);
            }
            transaction.Commit();
        }
        catch(Exception exception)
        {
            transaction.Rollback();
        }
    }
}

例外是

  

MySql.Data.MySqlClient.MySqlException（0x80004005）：您有错误   在你的SQL语法中;查看与MySQL对应的手册   服务器版本，用于在＆＃39; 1s () values ()' at line 1 at MySql.Data.MySqlClient.MySqlStream.ReadPacket() at MySql.Data.MySqlClient.NativeDriver.GetResult(Int32& affectedRow, Int64& insertedId) at MySql.Data.MySqlClient.Driver.NextResult(Int32 statementId, Boolean force) at MySql.Data.MySqlClient.MySqlDataReader.NextResult() at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior) at MySql.Data.MySqlClient.MySqlCommand.ExecuteNonQuery() at Dapper.SqlMapper.ExecuteImpl(IDbConnection cnn, CommandDefinition& command) in C:\projects\dapper\Dapper\SqlMapper.cs:line 552 at Dapper.SqlMapper.Execute(IDbConnection cnn, String sql, Object param, IDbTransaction transaction, Nullable附近使用的正确语法1 commandTimeout，Nullable 1 commandType) in C:\projects\dapper\Dapper\SqlMapper.cs:line 443 at MySqlAdapter.Insert(IDbConnection connection, IDbTransaction transaction, Nullable 1 commandTimeout，String tableName，String   columnList，String parameterList，IEnumerable 1 keyProperties, Object entityToInsert) in C:\projects\dapper\Dapper.Contrib\SqlMapperExtensions.cs:line 897
at Dapper.Contrib.Extensions.SqlMapperExtensions.Insert[T](IDbConnection connection, T entityToInsert, IDbTransaction transaction, Nullable 1   commandTimeout）in   C：\ projects \ dapper \ Dapper.Contrib \ SqlMapperExtensions.cs：第355行   在RecruiterinsiderPortal.Data.AgencyRegionRepository.Save（Int32   userId，List`1 regions）in   C：\ Empite \ RI \ RecruiterinsiderPortal \ RecruiterinsiderPortal \库\ RecruiterinsiderPortal.Data \ AgencyRegionRepository.cs：线   67

mysql版本是5.7.19

问题是什么？

更新

这是区域模型

 [Table("regions")]
    public class AgencyRegion
    {
        [Key]
        public int  Id { get; set; }
        public int UserId { get; set; }
        public int RegionId { get; set; }
    }

更新2

这是我发现的问题。我将在dapper存储库上打开问题，当我将dapper和contrib libs更新为最新版本1.50.4时插入，更新会抛出异常。因此我将Dapper降级为1.50.2并将其降至1.50.0然后工作正常。