add record in nlog to field with dataType = date

问题

I use nlog dll to write to database - oracle with entity frameWork in the line :

logger.Log(logLevel, "try");

I get in the logs of nlog the following error:

The literal does not match the template string

the code is:

        SetPropGDC(LogEntity);
        NLog.LogLevel logLevel = SetLogLevel(Level.Debug);
        logger.Log(logLevel, "try");
        ClearGDC();



 private void SetPropGDC(LogEntity LogEntity)
    {
        GlobalDiagnosticsContext.Set(processId, LogEntity.PROCESS_ID.ToString());
        GlobalDiagnosticsContext.Set("TIME_STAMP", DateTime.Now);
        GlobalDiagnosticsContext.Set(customerId, LogEntity.CUSTOMER_ID.ToString());

    }
<targets>
<target name="TRACEDatabase" type="DataBase"  keepConnection="false" 
         dbProvider="Oracle.ManagedDataAccess.Client" connectionString="${gdc:connectionString}"
         commandText="insert into TLOG_SITE_GENERAL_TRACE( PROCESS_ID,TIME_STAMP,CUSTOMER_ID)
                       values(:PROCESS_ID,:TIME_STAMP,:CUSTOMER_ID)">
  <parameter name="PROCESS_ID" layout="${gdc:PROCESS_ID}" />
  <parameter name="TIME_STAMP" layout="${gdc:TIME_STAMP}" />
  <parameter name="CUSTOMER_ID" layout="${gdc:CUSTOMER_ID}" />

</target>

I tryed in the Web.config to change the line:

      <parameter name="TIME_STAMP" layout="${gdc:TIME_STAMP}" />

to:

   <parameter name="TIME_STAMP" layout="${longDate}" />

and I got the same error

Can anyone help?

回答1:

NLog DatabaseTarget parameters converts to string by default. You can change the datatype by specifying dbType so it matches the database-column:

<target name="TRACEDatabase" type="DataBase">
    <parameter name="PROCESS_ID" layout="${event-properties:PROCESS_ID}" />
    <parameter name="TIME_STAMP" layout="${date}" dbType="DateTime" />
    <parameter name="CUSTOMER_ID" layout="${event-properties:CUSTOMER_ID}" />
</target>

Btw. it is a bad idea to use global variables for transfering context specific details.

Instead you should make use of NLog LogEventInfo Properties:

var logLevel = SetLogLevel(Level.Debug);
var theEvent = new NLog.LogEventInfo(logLevel, null, "try");
theEvent.Properties["PROCESS_ID"] = LogEntity.PROCESS_ID.ToString();
theEvent.Properties["CUSTOMER_ID"] = LogEntity.CUSTOMER_ID.ToString();
log.Log(theEvent);

See also: https://github.com/NLog/NLog/wiki/EventProperties-Layout-Renderer

来源：https://stackoverflow.com/questions/59018213/add-record-in-nlog-to-field-with-datatype-date

标签

Oracle

nlog