我试图简单地填充一个数据表,但它会导致在一定时间内冻结并抛出此异常:
连接尝试失败是因为连接的一方在一段时间后未正确响应,或者建立的连接失败是因为连接的主机未能响应。
可能做错了什么,但如果没有错误,可能是在Unity方面
//open connection to database
private bool OpenConnection()
{
try
{
connection.Open();
return true;
}
catch (MySqlException ex)
{
//0: Cannot connect to server.
//1045: Invalid user name and/or password.
switch (ex.Number)
{
case 0:
Debug.Log("Cannot connect to server. Contact administrator");
break;
case 1045:
Debug.Log("Invalid username/password, please try again");
break;
}
Debug.Log("error : " + ex.Number + " | " + ex.Message);
return false;
}
}
//Close connection
private bool CloseConnection()
{
try
{
connection.Close();
return true;
}
catch (MySqlException ex)
{
Debug.Log(ex.Message);
return false;
}
}
public DataTable SendQueryAndReceiveResult(string query)
{
try
{
MySqlCommand cmd = new MySqlCommand(query, connection);
MySqlDataAdapter adapter = new MySqlDataAdapter(cmd);
DataTable dataTable = new DataTable();
if (OpenConnection() == true)
{
adapter.Fill(dataTable);
CloseConnection();
Debug.Log("Succesfully send and receive the table from query : \n" + query);
return dataTable;
}
}
catch (System.Exception ex)
{
Debug.LogError("ERROR when sending and receiving the table from query : \n" + query);
Debug.LogError(ex.Message);
return null;
}
Debug.LogError("ERROR when sending and receiving the table from query : \n" + query);
return null;
}
最佳答案
您不能在Unity内部使用阻塞IO MySQL C#驱动程序,因为只有一个播放器线程。此外,您将需要允许来自防火墙的连接。
首先使用非阻塞(异步)驱动程序,例如this.
关于c# - 在Unity3d中使用MySQL,填充数据表,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/58565232/