Question

我错过了什么？我有以下代码成功发送电子邮件，但电子邮件的正文是空的。我认为它与patternLayout有关，但一切看起来还不错。关于发生了什么的任何想法？

private void createAdminNotifyAppender(LoggerContext lc, AppConfigPropertiesReader propReader)
{
    logger.info("Setting up logback admin_notify logging");

    //Set up the admin notify appender programatically (needs to use the properties from the propReader above)
    OnMarkerEvaluator markerEvaluator = new OnMarkerEvaluator();
    markerEvaluator.addMarker(LogbackMarker.ADMIN_NOTIFY.toString());
    String adminEmails = propReader.getProperty("adminEmail");
    PatternLayout patternLayout = new PatternLayout();
    patternLayout.setPattern("[\\(%-6threadHash\\) app=iv  %d{yyyy-MM-dd HH:mm:ss.SSS}] %-5level %-25logger{25} - %msg%n");

    SMTPAppender adminNotifyAppender = new SMTPAppender();
    adminNotifyAppender.setContext(lc);
    adminNotifyAppender.setEvaluator(markerEvaluator);
    adminNotifyAppender.setSMTPHost(propReader.getProperty("smtpHost"));
    for (String adminEmail : adminEmails.split(",")) { adminNotifyAppender.addTo(adminEmail); };
    adminNotifyAppender.setFrom(propReader.getProperty("sysEmailAddressNoReply"));
    adminNotifyAppender.setSubject("System Alert! [" + propReader.getProperty("environment") + "]");
    adminNotifyAppender.setLayout(patternLayout);
    adminNotifyAppender.start();

    Logger rootLogger = lc.getLogger(Logger.ROOT_LOGGER_NAME);
    rootLogger.addAppender(adminNotifyAppender);
}

Answer 1

问题是PatternLayout和OnMarkerEvaluator都有应该调用的启动方法（MarkerEvaluator似乎没有它）。

此外，两者都需要知道loggerContext（通过调用patternLayout.setContext（lc）来设置），否则你将得到如下所示：

[(%PARSER_ERROR[threadHash]) app=iv  %PARSER_ERROR[d]] %PARSER_ERROR[level] %PARSER_ERROR[logger] - %PARSER_ERROR[msg]%PARSER_ERROR[n]

一切都很好。

Logback - 以编程方式添加SMTPAppender使邮件正文空白

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