Log4j2自定义地图的电子邮件主题

本文是小编为大家收集整理的关于Log4j2自定义地图的电子邮件主题的处理/解决方法，可以参考本文帮助大家快速定位并解决问题，中文翻译不准确的可切换到English标签页查看源文。

中文
English

问题描述

我已经为客户安装了一些应用程序，我配置了SMTP Appender以接收错误电子邮件.

不幸的是，我需要一种方法来了解客户从哪些客户到达电子邮件.

我正在尝试在地图中设置一个参数，以将其显示为电子邮件的主题.我只能在启动应用程序并启动数据库后设置此参数:

String[] parametri = {username};
MapLookup.setMainArguments(parametri);

和我的log4j2.xml是:

<SMTP name="Mailer" subject="${sys:logPath} - ${map:0}" to="${receipients}"
        from="${from}" smtpHost="${smtpHost}" smtpPort="${smtpPort}"
        smtpProtocol="${smtpProtocol}" smtpUsername="${smtpUser}"
        smtpPassword="${smtpPassword}" smtpDebug="false" bufferSize="200"
        ignoreExceptions="false">
    </SMTP>

主题是相关部分.不幸的是，该主题未从log4j替换并保持原样.

我做错了什么?

谢谢

其他推荐答案

注意:log4j 2.6+本地支持这一点；您需要Java7+.

我使用 ExtendedSmtpAppender 在主题中为 ExtendedSmtpAppender 提供了一个免费的可用解决方案.
如果您仍然使用log4j 1.x(原始问题)，只需替换log4j-1.x.jar log4j-1.2-api-2.x.jar - 和log4j-core-2.x.jar + log4j-api-2.x.jar当然.

您从Maven Central获得 de.it-tw:log4j2-extras (这需要Java 7+和Log4j 2.8+).
如果您仅限于java 6(以及log4j 2.3)，则使用 de.it-tw:log4j2-Java6-extras

另请参见Gitlab项目: a>(或 >)

此外，它支持爆发总结，因此您将在几秒钟或几分钟内不会收到1000个错误电子邮件.用例:通过电子邮件将所有错误记录发送到支持/开发人员.在破损的网络或数据库上，这可能会导致数百个相同的错误电子邮件. 此appender执行以下操作:

第一次出现会立即通过电子邮件发送
所有以下类似的错误日志都在一定时间内进行缓冲(相似性和时间是可配置的)
在过去的时间之后，一封摘要电子邮件(事件数量，时间)以及第一个和最后一个事件是发送

示例配置(内部):

<SMTPx name="ErrorMail" smtpHost="mailer.xxxx.de" smtpPort="25"
        from="your name &lt;noReply@xxx.de>"  to="${errorEmailAddresses}"
        subject="[PROJECT-ID, ${hostName}, ${web:contextPath}] %p: %c{1} - %m%notEmpty{ =>%ex{short})}"
        subjectWithLayout="true"  bufferSize="5"
        burstSummarizingSeconds="300" bsCountInSubject="S" bsMessageMaskDigits="true"
        bsExceptionOrigin="true" >
    <PatternLayout pattern="-- %d  %p  %c [%.20t,%x]  %m%n" charset="UTF-8" />      <!-- SMTP uses fixed charset for message -->
</SMTPx>
<Async name="AsyncErrorMail" blocking="false" errorRef="Console">
    <AppenderRef ref="ErrorMail"/>
</Async>

另请参阅 -1192 .

本文地址：https://www.itbaoku.cn/post/1575155.html

百度翻译此文有道翻译此文

问题描述

I've some applications installed to my customers and I configured smtp appender to receive errors email.

Unfortunally I need a way to understand from which customer is arriving the email.

I'm trying to set a parameter in the map in order to show it as the subject of the email. I can set this parameter only after my app is started and the db is up:

String[] parametri = {username};
MapLookup.setMainArguments(parametri);

and my log4j2.xml is:

<SMTP name="Mailer" subject="${sys:logPath} - ${map:0}" to="${receipients}"
        from="${from}" smtpHost="${smtpHost}" smtpPort="${smtpPort}"
        smtpProtocol="${smtpProtocol}" smtpUsername="${smtpUser}"
        smtpPassword="${smtpPassword}" smtpDebug="false" bufferSize="200"
        ignoreExceptions="false">
    </SMTP>

the subject is the relevant part. Unfortunally the subject is not replaced from log4j and remains as it is.

What I'm doing wrong?

Thanks

其他推荐答案

Note: log4j 2.6+ supports this natively; you need Java7+ for this.

I created a free useable solution for log4j2 and also Java6 with an ExtendedSmtpAppender supporting PatternLayout in subject.
If you still use log4j 1.x (original question), simply replace your log4j-1.x.jar with log4j-1.2-api-2.x.jar - and log4j-core-2.x.jar + log4j-api-2.x.jar of course.

You get it from Maven Central as de.it-tw:log4j2-extras (This requires Java 7+ and log4j 2.8+).
If you are restricted to Java 6 (and thus log4j 2.3) then use de.it-tw:log4j2-Java6-extras

Additionally, it supports burst summarizing, so you will not get 1000 error emails within a few seconds or minutes. Use case: Send all ERROR-logs via Email to support/developer. On a broken network or database this can cause hundreds of the same error email. This appender does the following:

the first occurrence is emailed immediately
all following similar ERROR logs are buffered for a certain time (similarity and time is configurable)
after the time passed, a summary email with summary info (number of events, time) and the first and last event is send

Example configuration (inside <Appenders>):

<SMTPx name="ErrorMail" smtpHost="mailer.xxxx.de" smtpPort="25"
        from="your name &lt;noReply@xxx.de>"  to="${errorEmailAddresses}"
        subject="[PROJECT-ID, ${hostName}, ${web:contextPath}] %p: %c{1} - %m%notEmpty{ =>%ex{short})}"
        subjectWithLayout="true"  bufferSize="5"
        burstSummarizingSeconds="300" bsCountInSubject="S" bsMessageMaskDigits="true"
        bsExceptionOrigin="true" >
    <PatternLayout pattern="-- %d  %p  %c [%.20t,%x]  %m%n" charset="UTF-8" />      <!-- SMTP uses fixed charset for message -->
</SMTPx>
<Async name="AsyncErrorMail" blocking="false" errorRef="Console">
    <AppenderRef ref="ErrorMail"/>
</Async>

上一篇：我如何加载我的log4j.xml文件，该文件不在classpath中，但它存在于D盘？

下一篇：配置log4j日志文件名，如果它是滚动的？