Question

我编写了一个Windows服务，该服务使用SSH（安全外壳）将数据从CSV文件复制到PhpMyAdmin在线数据库。

连接打开时出现错误触发，

MySql.Data.MySqlClient.MySqlProtocolException
  HResult=0x80131509
  Message=Packet received out-of-order. Expected 2; got 1.
  Source=mscorlib
  StackTrace:
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

作为解决方案，我决定保留当前线程并在连接打开之前添加以下行。

Task.Delay(TimeSpan.FromMilliseconds(10000)).Wait();

不幸的是，这导致了另一个错误，

MySql.Data.MySqlClient.MySqlException
  HResult=0x80004005
  Message=Failed to read the result set.
  Source=MySqlConnector
  StackTrace:
Inner Exception 1:
EndOfStreamException: Expected to read 4 header bytes but only received 0.

当我随机更改线程保持时间的值时，上述2个错误会彼此不同。

相关代码块：

        Public  void insert(string connString){
        using (var conn = new MySqlConnection(connString))
        {

             Task.Delay(TimeSpan.FromMilliseconds(10000)).Wait();
                conn.Open();
            using(var reader = new StreamReader(@"C:\Users\Admin\source\Bargstedt.csv"))
            {
                while (!reader.EndOfStream)
                {
                    var line = reader.ReadLine();
                    var values = line.Split(',');
                    string querynew = "INSERT INTO jobs"
                                + "(nJobNumber,strClientReference,datPromisedDelivery)" 
                                + "VALUES (@jobNo, @strClientName, @strClientReference)";

                    using (var cmd = new MySqlCommand())
                    {

                        cmd.Connection = conn;
                        cmd.CommandText= querynew;
                        cmd.Parameters.AddWithValue("jobNo", values[0]);
                        cmd.Parameters.AddWithValue("strClientName", values[1]);


                        cmd.Parameters.AddWithValue("strClientReference",values[2]);


                        cmd.ExecuteNonQuery();
                    }
                }
            }
        }
    }

关于如何解决此异常的任何建议？

预期读取4个标头字节，但仅收到0个

0 个答案: