我需要将自定义数据记录到 Db 并按照本教程进行操作: http: //stephenjamescode.blogspot.it/2014/01/logging-custom-objects-and-fields-with.html
我实现了一个ReflectionPatternConverter
,它使我能够记录我需要的任何自定义数据。这是代码:
反射模式转换器
public class ReflectionPatternConverter : PatternConverter
{
protected override void Convert(TextWriter writer, object state)
{
if (state == null)
{
writer.Write(SystemInfo.NullText);
return;
}
var loggingEvent = state as LoggingEvent;
if (loggingEvent == null)
return;
Type messageObjectType = loggingEvent.MessageObject.GetType();
PropertyInfo[] properties = messageObjectType.GetProperties(BindingFlags.Instance | BindingFlags.Public);
foreach (var property in properties)
{
if (this.Option.ToLower().Equals(property.Name.ToLower()))
{
writer.Write(property.GetValue(loggingEvent.MessageObject, null));
}
}
}
我使用一个自定义ReflectionPatternLayout
,除了注册ReflectionPatternConverter
.
反射图案布局
public class ReflectionPatternLayout : PatternLayout
{
public ReflectionPatternLayout()
{
ConverterInfo converter = new ConverterInfo();
converter.Name = "customProperties";
converter.Type = typeof (ReflectionPatternConverter);
AddConverter(converter);
}
}
我想记录这个自定义数据类:
自定义日志数据
public class CustomLogData
{
public string Prop1 { get; set; }
public DateTime Prop2 { get; set; }
public int Prop3 { get; set; }
public override string ToString()
{
StringBuilder builder = new StringBuilder();
builder.AppendFormat(
"Prop1: {0}, Prop2: {1}, Prop3: {2}",
this.Prop1,
this.Prop2.ToString("yyyyMMdd HH:mm:ss"),
this.Prop3);
return builder.ToString();
}
}
所以我用这个配置文件(片段)配置了 log4net:
<appender name="AdoNetManager" type="log4net.Appender.AdoNetAppender">
<bufferSize value="1" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="**omitted**" />
<commandText value="INSERT INTO dbo.ApplicationLog (Timestamp, Prop1, Prop2, Prop3) VALUES (@Timestamp, @Prop1, @Prop2, @Prop3)" />
<parameter>
<parameterName value="@Timestamp" />
<dbType value="DateTime" />
<layout type="log4net.Layout.RawTimeStampLayout" />
</parameter>
<parameter>
<parameterName value="@Prop1" />
<dbType value="String" />
<size value="500" />
<layout type="MyAssembly.ReflectionPatternLayout, MyAssembly">
<conversionPattern value="%customProperties{Prop1}" />
</layout>
</parameter>
<parameter>
<parameterName value="@Prop2" />
<dbType value="DateTime" />
<layout type="MyAssembly.ReflectionPatternLayout, MyAssembly">
<conversionPattern value="%customProperties{Prop2}" />
</layout>
</parameter>
<parameter>
<parameterName value="@Prop3" />
<dbType value="Int32" />
<layout type="MyAssembly.ReflectionPatternLayout, MyAssembly">
<conversionPattern value="%customProperties{Prop3}" />
</layout>
</parameter>
</appender>
每当我尝试编写日志条目时,都会出现此异常(log4net 的调试模式设置为 true):
log4net:错误 [AdoNetAppender] 错误代码:GenericFailure。写入数据库 log4net 时出现异常:错误 [AdoNetAppender] 错误代码:GenericFailure。写入数据库时出现异常 System.FormatException:无法将参数值从 String 转换为 DateTime。---> System.FormatException:字符串未被识别为有效的日期时间......
(异常信息可能不同,我是从意大利语翻译过来的)。
有趣的是,如果我将当前线程区域设置为CultureInfo.InvariantCulture
...
Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
Thread.CurrentThread.CurrentUICulture = CultureInfo.InvariantCulture;
//log here
所以我高度怀疑这是日期时间格式的愚蠢语言环境问题。
如何将日志记录与客户端区域设置分离?