无法在发布模式下创建具有未知类型别名“ApplicationInsightsTarget”的目标

Question

我正在使用 VB.NET 进行编写，并尝试将 WPF 应用程序的日志记录与 NLog 和 Azure Application Insights 连接起来。我已经设置好了一切，它在调试模式下运行得很好。但是，当我切换到发布模式或部署它时，它不起作用。在 NLog 日志文件中，我收到以下错误：

Failed to create Target with unknown type-alias: ApplicationInsightsTarget - Verify type-alias and check extension is included

。我使用了以下软件包：

• Microsoft.ApplicationInsights

• Microsoft.ApplicationInsights.NLogTarget

• Microsoft.Extensions.Logging

• NLog.Extensions.Logging

• NLog

但是，在发布模式下，它写入 NLog 文件没有任何问题。 .dll 文件在发布和调试模式下都存在于 bin 文件夹中。

但是，在发布模式下，它写入 NLog 文件没有任何问题。 .dll 文件在发布和调试模式下都存在于 bin 文件夹中

{
  "ActivateExtendedLogging": true,
  "NLog": {
    "internalLogLevel": "Info",
    "internalLogFile": "${basedir}/InternalLogFile/LoggingMessages-nlog.txt",
    "targets": {
      "aiTarget": {
        "type": "ApplicationInsightsTarget",
        "name": "aiTarget",
        "layout": "${message}",
        "instrumentationKey": "0000-000000000-00000-00000"
      },
      "async": true,
      "logfile": {
        "type": "File",
        "fileName": "${basedir}/NLogs/nlog-${shortdate}.log",
        "layout": {
          "type": "JsonLayout",
          "Attributes": [
            {
              "name": "timestamp",
              "layout": "${date:format=o}"
            },
            {
              "name": "level",
              "layout": "${level}"
            },
            {
              "name": "logger",
              "layout": "${logger}"
            },
            {
              "name": "message",
              "layout": "${message:raw=true}"
            },
            {
              "name": "properties",
              "encode": false,
              "layout": {
                "type": "JsonLayout",
                "includeallproperties": "true"
              }
            }
          ]
        }
      },
      "console": {
        "type": "LimitingWrapper",
        "interval": "00:00:01",
        "messageLimit": 100,
        "target": {
          "type": "ColoredConsole",
          "layout": "${longdate}|${event-properties:item=EventId_Id:whenEmpty=0}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}|${callsite}",
          "rowHighlightingRules": [
            {
              "condition": "level == LogLevel.Error",
              "foregroundColor": "Red"
            },
            {
              "condition": "level == LogLevel.Fatal",
              "foregroundColor": "Red",
              "backgroundColor": "White"
            }
          ],
          "wordHighlightingRules": [
            {
              "regex": "on|off",
              "foregroundColor": "DarkGreen"
            },
            {
              "condition": "level == LogLevel.Debug",
              "text": "[TEST]",
              "foregroundColor": "Blue"
            }
          ]
        }
      }
    },
    "rules": [
      {
        "logger": "*",
        "minLevel": "Error",
        "writeTo": "logfile"
      },
      {
        "logger": "*",
        "minLevel": "Trace",
        "writeTo": "aiTarget"
      },
      {
        "logger": "*",
        "minLevel": "Debug",
        "writeTo": "console"
      }
    ]
  }
}

这是代码

Dim PathToJson As String = $"{AppDomain.CurrentDomain.BaseDirectory}bin"
        Dim jsonFilePath As String = Path.Combine(PathToJson, "nlogsettings.json")
        LogError("", jsonFilePath)
        LogError("", AppDomain.CurrentDomain.BaseDirectory)
        If File.Exists(jsonFilePath) Then
            Dim config = New ConfigurationBuilder() _
            .SetBasePath(Directory.GetCurrentDirectory()) _
            .AddJsonFile(jsonFilePath, optional:=False, reloadOnChange:=True) _
            .Build()
            LogManager.Configuration = New NLogLoggingConfiguration(config.GetSection("NLog"))
            Dim activateLogging As Boolean
            If Boolean.TryParse(config("ActivateExtendedLogging"), ActivateExtendedLogging) Then
                Me.ActivateExtendedLogging = ActivateExtendedLogging
            End If
        Else
            WriteLog("NLog Json file does not exist!")
        End If

Answer 1

无法创建类型别名未知的目标：ApplicationInsightsTarget - 验证类型别名并检查是否包含扩展名

要包含 NLog 扩展，您必须执行以下操作：

• 将 NLog 扩展的 nuget-package 添加到应用程序项目中。
• 将 NLog 扩展添加到 NLog 配置中。

第一部分您已完成，但另一部分可以在 appsettings.json:

中完成

  "NLog": {
    "extensions": [
      { "assembly": "Microsoft.ApplicationInsights.NLogTarget" }
    ],

您也可以通过代码注册：

NLog.LogManager.Setup().SetupExtensions(ext =>
   ext.RegisterTarget<Microsoft.ApplicationInsights.NLogTarget.ApplicationInsightsTarget >("ApplicationInsightsTarget")
);