当我启动 Confluence 时，如何避免在日志中显示 WARN 消息（不将 log4j 级别设置为 ERROR）？plugin.path我已经在属性文件中设置了变量的值${CONFLUENT_HOME}/share/java/kafka-connect-jdbc（最后带有逗号）。我尝试将 kafka-connect-jdbc 存储库放入类路径中，但没有成功。
以下只是日志文件的一小部分示例：
[2018-07-10 15:40:30,168] INFO Reflections took 1 ms to scan 1 urls, producing 5 keys and 6 values [using 1 cores] (org.reflection
s.Reflections)
[2018-07-10 15:40:30,170] WARN could not get type for name org.jmock.Mockery from any class loader (org.reflections.Reflections)
org.reflections.ReflectionsException: could not get type for name org.jmock.Mockery
at org.reflections.ReflectionUtils.forName(ReflectionUtils.java:390)
at org.reflections.Reflections.expandSuperTypes(Reflections.java:381)
at org.reflections.Reflections.<init>(Reflections.java:126)
at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader$InternalReflections.<init>(DelegatingClassLoader.java:
365)
at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scanPluginPath(DelegatingClassLoader.java:277)
at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scanUrlsAndAddPlugins(DelegatingClassLoader.java:216)
at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.registerPlugin(DelegatingClassLoader.java:208)
at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.initPluginLoader(DelegatingClassLoader.java:177)
at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.initLoaders(DelegatingClassLoader.java:154)
at …