ELK的新功能，并尝试将简单表从sql server复制到Elasticsearch。
我遵循了此处所述的确切说明：https://codeshare.co.uk/blog/how-to-copy-sql-server-data-to-elasticsearch-using-logstash/
但是尝试运行logstash时出现以下错误：
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.apache.logging.log4j.core.util.WatchManager.<init>(WatchManager.java:53)
at org.apache.logging.log4j.core.config.AbstractConfiguration.<init>(AbstractConfiguration.java:135)
at org.apache.logging.log4j.core.config.NullConfiguration.<init>(NullConfiguration.java:32)
at org.apache.logging.log4j.core.LoggerContext.<clinit>(LoggerContext.java:85)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.createContext(ClassLoaderContextSelector.java:179)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(ClassLoaderContextSelector.java:153)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:78)
at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(ClassLoaderContextSelector.java:65)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:148)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:581)
at org.logstash.Logstash.<clinit>(Logstash.java:22)
Caused by: java.lang.ArrayIndexOutOfBoundsException
at java.lang.System.arraycopy(Native Method)
at org.apache.logging.log4j.core.util.UuidUtil.<clinit>(UuidUtil.java:81)
不知道是什么原因，感谢您的帮助。
谢谢。