本文介绍了如何检测丢失的LOG4J2配置？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我希望能够检测到应用程序何时缺少LOG4J2.XML配置文件，并且在这种情况下设置一些其他默认值，而不是LOG4J2的其他默认值。
I would like to be able to detect when the app is missing a LOG4J2.XML configuration file, and in that case set some other defaults than what LOG4J2 has otherwise.
基本上，如果找不到配置文件，我想运行此代码：
Basically, I would like to run this code if a config file isnt found:
// A default configuration that shows ALL Logger output, without a XML config!
LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
Configuration config = ctx.getConfiguration();
LoggerConfig loggerConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
loggerConfig.setLevel(Level.ALL);
ctx.updateLoggers(); // This causes all Loggers to refetch information from their LoggerConfig.
如何检测到LOG4J2无法加载配置？
How can I detect that LOG4J2 failed to load a configuration?
推荐答案
似乎... ...
if (config instanceof DefaultConfiguration)
...就足够了，因为只要没有其他可用的东西就使用DefaultConfiguration，请参阅有关Log4j2配置的：
...would be enough, since DefaultConfiguration is used whenever there is nothing else available, see the documentation for Log4j2 configuration:
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