2020年9月11日 星期五

[研究] [ASP.NET] NLog 4.7.4 日誌套件安裝、試用 (NuGet)

 [研究] [ASP.NET] NLog 4.7.4 日誌套件安裝、試用 (NuGet)

2020-09-11

NLog 官方網站
http://nlog-project.org/

Documentation
http://nlog-project.org/documentation/

Wiki
https://github.com/nlog/nlog/wiki

教學
https://github.com/nlog/nlog/wiki/Tutorial

CodePlex：
http://nlog.codeplex.com/

github：
https://github.com/jkowalski/NLog

NuGet Gallery：
http://nuget.org/List/Packages/NLog

環境：Visual Studio 2019

NuGet 安裝選 NLog.Config，會自動連 NLog、NLog.Config、NLog.Schema 都安裝。



NLog.config 設定輸出檔案和等級
可透過設定檔控制：程式碼範圍、紀錄層級、輸出對象、輸出格式。

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
      autoReload="true"
      throwExceptions="false"
      internalLogLevel="Off" internalLogFile="c:\temp\nlog-internal.log">

  <!-- optional, add some variables
  https://github.com/nlog/NLog/wiki/Configuration-file#variables
  -->
  <variable name="myvar" value="myvalue"/>

  <!--
  See https://github.com/nlog/nlog/wiki/Configuration-file
  for information on customizing logging rules and outputs.
   -->
  <targets>

    <!--
    add your targets here
    See https://github.com/nlog/NLog/wiki/Targets for possible targets.
    See https://github.com/nlog/NLog/wiki/Layout-Renderers for the possible layout renderers.
    -->

    <!--
    Write events to a file with the date in the filename.
    <target xsi:type="File" name="f" fileName="${basedir}/logs/${shortdate}.log"
            layout="${longdate} ${uppercase:${level}} ${message}" />
    -->
	  <target xsi:type="File" name="f" fileName="${basedir}/logs/${shortdate}.log"
            layout="${longdate} ${uppercase:${level}} ${message}" />
  </targets>

  <rules>
    <!-- add your logging rules here -->

    <!--
    Write all events with minimal level of Debug (So Debug, Info, Warn, Error and Fatal, but not Trace)  to "f"
    <logger name="*" minlevel="Debug" writeTo="f" />
    -->
	  <logger name="*" minlevel="Debug" writeTo="f" />
  </rules>
</nlog>





Default.aspx



<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" 
Inherits="NLogTest2.Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
        </div>
    </form>
</body>
</html>





Default.aspx.cs


using System;

namespace NLogTest2
{
    public partial class Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            NLog.Logger Logger = NLog.LogManager.GetCurrentClassLogger();
            try
            {
                Logger.Info("Hello world");
                // Logger.Error("Error Message");
                System.Console.ReadKey();
            }
            catch (Exception ex)
            {
                Logger.Error(ex, "Goodbye cruel world");
            }
        }
    }
}


結果：輸出檔案。



(下圖)檔案內容。














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