diff --git a/Txgy.EWS.Client.DAL/RemoteMySQLDataAccess.cs b/Txgy.EWS.Client.DAL/RemoteMySQLDataAccess.cs
index 514821a..31e1b50 100644
--- a/Txgy.EWS.Client.DAL/RemoteMySQLDataAccess.cs
+++ b/Txgy.EWS.Client.DAL/RemoteMySQLDataAccess.cs
@@ -7,6 +7,7 @@ using System.Data.SqlClient;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
+using System.Reflection;
 using System.Runtime.Remoting.Contexts;
 using System.Text;
 using System.Threading;
@@ -612,7 +613,7 @@ namespace Txgy.EWS.Client.DAL
             }
             catch (Exception ex)
             {
-                logger.Error($"获取最新事件失败 - 截止时间:{deadline}", ex);
+                logger.Error("获取最新事件失败", ex);
                 throw;
             }
             finally
@@ -667,7 +668,7 @@ namespace Txgy.EWS.Client.DAL
             }
             catch (Exception ex)
             {
-                logger.Error($"获取最新事件列表失败 - 数量:{resultCount}", ex);
+                logger.Error($"获取最新事件失败 - 截止时间:{deadline}", ex);
                 throw;
             }
             finally
@@ -988,7 +989,7 @@ namespace Txgy.EWS.Client.DAL
             catch (Exception ex)
             {
                 _semaphore.Release();
-                logger.Error($"查询和下载数据失败 - 事件ID:{eventID}, 截止时间:{endTime}, 保存路径:{savePath}", ex);
+                logger.Error($"查询和下载数据失败 - 事件ID:{eventID}, 保存路径:{savePath}", ex);
                 // 异常处理代码
                 Console.WriteLine($"QueryAndDownloadDataAsync error: {ex.StackTrace}");
                 throw;
diff --git a/Txgy.EWS.Client.DAL/Txgy.EWS.Client.DAL.csproj b/Txgy.EWS.Client.DAL/Txgy.EWS.Client.DAL.csproj
index f1e9ab4..5244a01 100644
--- a/Txgy.EWS.Client.DAL/Txgy.EWS.Client.DAL.csproj
+++ b/Txgy.EWS.Client.DAL/Txgy.EWS.Client.DAL.csproj
@@ -62,6 +62,9 @@
     <Reference Include="K4os.Hash.xxHash, Version=1.0.6.0, Culture=neutral, PublicKeyToken=32cd54395057cec3, processorArchitecture=MSIL">
       <HintPath>..\packages\K4os.Hash.xxHash.1.0.6\lib\net46\K4os.Hash.xxHash.dll</HintPath>
     </Reference>
+    <Reference Include="log4net, Version=2.0.15.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a, processorArchitecture=MSIL">
+      <HintPath>..\packages\log4net.2.0.15\lib\net45\log4net.dll</HintPath>
+    </Reference>
     <Reference Include="MySql.Data, Version=8.0.30.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d, processorArchitecture=MSIL">
       <HintPath>..\packages\MySql.Data.8.0.30\lib\net48\MySql.Data.dll</HintPath>
     </Reference>
diff --git a/Txgy.EWS.Client.DAL/packages.config b/Txgy.EWS.Client.DAL/packages.config
index e309f0c..a94a437 100644
--- a/Txgy.EWS.Client.DAL/packages.config
+++ b/Txgy.EWS.Client.DAL/packages.config
@@ -22,4 +22,5 @@
   <package id="System.Numerics.Vectors" version="4.5.0" targetFramework="net48" />
   <package id="System.Runtime.CompilerServices.Unsafe" version="6.0.0" targetFramework="net48" />
   <package id="System.Threading.Tasks.Extensions" version="4.5.2" targetFramework="net48" />
+  <package id="log4net" version="2.0.15" targetFramework="net48" />
 </packages>
\ No newline at end of file