DbCommandInterceptor抓取EF执行时的SQL语句

EF6.1也出来不少日子了,6.1相比6.0有个很大的特点就是新增了System.Data.Entity.Infrastructure.Interception 命名空间,此命名空间下的对象可以允许我们更加方便的了解到EF运行时的一些信息,当然我们最想看的还是EF生成的Sql语句,话不多讲,开始干吧;

/// <summary>
/// 抓取EF执行时的SQL语句
/// </summary>
public class EFIntercepterLogging : DbCommandInterceptor
{
private readonly Stopwatch _stopwatch = new Stopwatch();

public override void ScalarExecuting(DbCommand command, DbCommandInterceptionContext<object> interceptionContext)
{
base.ScalarExecuting(command, interceptionContext);
_stopwatch.Restart();
}

public override void ScalarExecuted(DbCommand command, DbCommandInterceptionContext<object> interceptionContext)
{
_stopwatch.Stop();
if (interceptionContext.Exception != null)
{
Trace.TraceError("Exception:{1} \r\n --> Error executing command: {0}", command.CommandText, interceptionContext.Exception.ToString());
}
else
{
Trace.WriteLine("线程：" + System.Threading.Thread.CurrentThread.ManagedThreadId);
Trace.TraceInformation("\r\n执行时间:{0} 毫秒\r\n-->ScalarExecuted.Command:{1}\r\n", _stopwatch.ElapsedMilliseconds, command.CommandText);
}
base.ScalarExecuted(command, interceptionContext);
}

public override void NonQueryExecuting(DbCommand command, DbCommandInterceptionContext<int> interceptionContext)
{
base.NonQueryExecuting(command, interceptionContext);
_stopwatch.Restart();
}

public override void NonQueryExecuted(DbCommand command, DbCommandInterceptionContext<int> interceptionContext)
{
_stopwatch.Stop();
if (interceptionContext.Exception != null)
{
Trace.TraceError("Exception:{1} \r\n --> Error executing command:\r\n {0}", command.CommandText, interceptionContext.Exception.ToString());
}
else
{
Trace.TraceInformation("\r\n执行时间:{0} 毫秒\r\n-->NonQueryExecuted.Command:\r\n{1}", _stopwatch.ElapsedMilliseconds, command.CommandText);
}
base.NonQueryExecuted(command, interceptionContext);
}

public override void ReaderExecuting(DbCommand command, DbCommandInterceptionContext<DbDataReader> interceptionContext)
{
//command.CommandText += " AND 1=1";
base.ReaderExecuting(command, interceptionContext);
_stopwatch.Restart();
}

public override void ReaderExecuted(DbCommand command, DbCommandInterceptionContext<DbDataReader> interceptionContext)
{
_stopwatch.Stop();
if (interceptionContext.Exception != null)
{
Trace.TraceError("Exception:{1} \r\n --> Error executing command:\r\n {0}", command.CommandText, interceptionContext.Exception.ToString());
}
else
{
Trace.WriteLine("线程：" + System.Threading.Thread.CurrentThread.ManagedThreadId);
Trace.TraceInformation("\r\n执行时间:{0} 毫秒 \r\n -->ReaderExecuted.Command:\r\n{1}", _stopwatch.ElapsedMilliseconds, command.CommandText);
}
base.ReaderExecuted(command, interceptionContext);
}
}

//EF监控
DbInterception.Add(new EFIntercepterLogging());