Nlog是一款可以通过自动化配置来把log信息指定写入 win console,Sql server,甚至是通过STMP 发送邮件的log engine
首先下载Nlog DLL，通过网上直接download 或者nuget 下载DLL都可以。
http://nlog-project.org/download/
然后把下载下来的Nlog.dll ,Nlog,extension.dll 加入项目reference.
![]()
我暂时只加载了Nlog,因为还没去研究Nlog.extension有什么功能。
之后就是配置文件了，（Nlog Configuration）, 它其实是一个 config文件Name:（Nlog.config）
格式如下：
01 |
<?xml
version="1.0" encoding="utf-8" ?> |
07 |
for
information on customizing logging rules and outputs. |
10 |
<!--
add your targets here --> |
13 |
<target
xsi:type="File" name="f" fileName="${basedir}/logs/${shortdate}.log" |
14 |
layout="${longdate}
${uppercase:${level}} ${message}" /> |
19 |
<!--
add your logging rules here --> |
22 |
<logger
name="*" minlevel="Trace" writeTo="f" /> |
或者如果你是WebAPP的话，可以把config直接写在web.config的<configuration>节点下，我比较喜欢这种
<configuration>
<configSections>
<section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog"/>
</configSections>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<!-- See http://nlog-project.org/wiki/Configuration_file for information on customizing logging rules and outputs. -->
<targets>
<target xsi:type="File" name="f" fileName="${basedir}/APP_Data/logs/${shortdate}.log" layout="${longdate} ${uppercase:${level}} ${message}" />
</targets>
<rules>
<logger name="*" minlevel="Trace" writeTo="f" />
</rules>
</nlog>
</configuration>
接下来就是比较有技术含量的东西了，如何把log写入数据库，或者发邮件通知,也是通过配置文件，配置如下：
<?xml version="1.0" encoding="utf-8" ?> |
05 |
<!--nlog
debug start--> |
08 |
throwExceptions="true"
internalLogFile="c:\nlog.txt" internalLogLevel="Debug" autoReload="true">--> |
13 |
for
information on customizing logging rules and outputs. |
16 |
<!--
add your targets here --> |
18 |
<!--<target
xsi:type="File" name="f" fileName="${basedir}/App_Data/logs/${shortdate}.log" |
19 |
layout="${longdate}
${uppercase:${level}} ${message}" />--> |
21 |
<target xsi:type="File" name="f" fileName="${basedir}/App_Data/logs/${shortdate}.log" |
22 |
layout="${longdate}
${uppercase:${level}} ${loginuser} ${message} ${machinename} ${exception:format=type} ${callsite:className=true} ${logger} ${exception:stacktrace} ${exception:format=tostring}" /> |
24 |
<target xsi:type="Database" name="db" dbProvider="mssql" commandText="Insert
into NLog_Record(time_stamp, level, host, url, type, source, logger, message, stacktrace, detail, loginuser) Values(@time_stamp, @level, @host, @url, @type, @source, @logger, @message, @stacktrace, @detail, @loginuser);" connectionString="Data
Source=localhost;Initial Catalog=Log_DB;Persist Security Info=True;User ID=資料庫登入帳號;Password=資料庫登入密碼;"> |
25 |
<!--<parameter
name="@time_stamp" layout="${longdate}" />--> |
26 |
<parameter name="@time_stamp" layout="${date:format=yyyy\-MM\-dd
HH\:mm\:ss.fff} " /> |
27 |
<parameter name="@level" layout="${level}" /> |
28 |
<parameter name="@host" layout="${machinename}" /> |
29 |
<parameter name="@url" layout="${aspnet-request:serverVariable=url}" /> |
30 |
<parameter name="@type" layout="${exception:format=type}" /> |
31 |
<parameter name="@source" layout="${callsite:className=true}" /> |
32 |
<parameter name="@logger" layout="${logger}" /> |
33 |
<parameter name="@message" layout="${message}" /> |
34 |
<parameter name="@stacktrace" layout="${exception:stacktrace}" /> |
35 |
<parameter name="@detail" layout="${exception:format=tostring}" /> |
36 |
<parameter name="@loginuser" layout="${loginuser}" /> |
39 |
<target xsi:type="Mail" name ="FatalMail" |
40 |
smtpServer="smtp.gmail.com" |
42 |
smtpAuthentication="Basic" |
43 |
smtpUsername="你要寄出的Email帳號" |
44 |
smtpPassword="寄出Email的密碼" |
48 |
to="收信的Email,收信的Email2" |
49 |
subject="${machinename}
於 ${shortdate} ${time} Log級別：${level} 於 ${callsite:className=true}, 出現 ${exception:format=type}！" |
50 |
header="=========================================================================" |
52 |
發生時間：${longdate}
${newline}${newline} |
53 |
Log等級：${level:uppercase=true}
${newline}${newline} |
54 |
Logger：${logger}
${newline}${newline} |
55 |
Source：${callsite:className=true}
${newline}${newline} |
56 |
使用者：${loginuser}
${newline}${newline} |
57 |
Exception類別：${exception:format=type}
${newline}${newline} |
58 |
錯誤訊息：${message}
${newline}${newline}" |
59 |
footer="=========================================================================" |
62 |
<target bufferSize="5" name="ErrorMail" xsi:type="BufferingWrapper"> |
63 |
<target xsi:type="Mail" |
64 |
smtpServer="smtp.gmail.com" |
66 |
smtpAuthentication="Basic" |
67 |
smtpUsername="你要寄出的Email帳號" |
68 |
smtpPassword="寄出Email的密碼" |
72 |
to="收信的Email,收信的Email2" |
73 |
subject="${machinename}
於 ${shortdate} ${time} Log級別：${level} 出現錯誤！" |
74 |
header="=========================================================================" |
76 |
發生時間：${longdate}
${newline}${newline} |
77 |
Log等級：${level:uppercase=true}
${newline}${newline} |
78 |
Logger：${logger}
${newline}${newline} |
79 |
Source：${callsite:className=true}
${newline}${newline} |
80 |
使用者：${loginuser}
${newline}${newline} |
81 |
Exception類別：${exception:format=type}
${newline}${newline} |
82 |
錯誤訊息：${message}
${newline}${newline}" |
83 |
footer="=========================================================================" |
90 |
<!--
add your logging rules here --> |
92 |
<logger name="*" maxlevel="Info" writeTo="f" /> |
93 |
<logger name="*" minlevel="Warn" writeTo="db" /> |
94 |
<logger name="*" level="Fatal" writeTo="FatalMail" /> |
95 |
<logger name="*" level="Error" writeTo="ErrorMail" /> |
需要注意的是，配置文件的
<target> 存放log的地方，文件 /数据库/邮件
<rule> 是写入/显示log的方式
最后就是Nlog的语句了：
using NLog;
private static Logger logger = LogManager.GetCurrentClassLogger();
public ActionResult Index()
{
logger.Trace("Sample trace message");
logger.Debug("Sample debug message");
logger.Info("Sample informational message");
logger.Warn("Sample warning message");
logger.Error("Sample error message");
logger.Fatal("Sample fatal error message");
// alternatively you can call the Log() method
// and pass log level as the parameter.
logger.Log(LogLevel.Info, "Sample informational message");
如果你写入的是consoleApp，你会发现不同的log颜色会不同，一目了然
NLog日志使用方法,布布扣,bubuko.com
时间： 2024-10-16 15:55:34
