Windows部署canal报错：Should be either .groovy or .xml

Windows下双击startup.bat：

start cmd :  java   -Xms128m -Xmx512m -XX:PermSize=128m  -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Dapplication.codeset=UTF-8 -Dfile.encoding=UTF-8  -server -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=9099,server=y,suspend=n  -DappName=otter-canal -Dlogback.configurationFile="" -Dcanal.conf="F:\FFCS\software\canal.deployer-1.1.4\bin\\..\conf\canal.properties" -classpath "F:\FFCS\software\canal.deployer-1.1.4\bin\\..\conf\..\lib\*;F:\FFCS\software\canal.deployer-1.1.4\bin\\..\conf" java   -Xms128m -Xmx512m -XX:PermSize=128m  -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true -Dapplication.codeset=UTF-8 -Dfile.encoding=UTF-8  -server -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=9099,server=y,suspend=n  -DappName=otter-canal -Dlogback.configurationFile="" -Dcanal.conf="F:\FFCS\software\canal.deployer-1.1.4\bin\\..\conf\canal.properties" -classpath "F:\FFCS\software\canal.deployer-1.1.4\bin\\..\conf\..\lib\*;F:\FFCS\software\canal.deployer-1.1.4\bin\\..\conf" com.alibaba.otter.canal.deployer.CanalLauncher
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
Listening for transport dt_socket at address: 9099
Failed to instantiate [ch.qos.logback.classic.LoggerContext]
Reported exception:
ch.qos.logback.core.LogbackException: Unexpected filename extension of file [file:/F:/FFCS/software/canal.deployer-1.1.4/conf/]. Should be either .groovy or .xml
        at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:79)
        at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:152)
        at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:85)
        at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)
        at org.slf4j.LoggerFactory.bind(LoggerFactory.java:141)
        at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:120)
        at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:331)
        at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:283)
        at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:304)
        at com.alibaba.otter.canal.deployer.CanalLauncher.<clinit>(CanalLauncher.java:29)

这个错误的本质是，启动时，工程找不到 logback.xml 文件
通过启动日志我们可以发现：-Dlogback.configurationFile=""
我们打开startup.bat查看其内容

于是，我把这个变量引用，改成具体值。

重新启动，不在发生这个错误。