当我从提供的shell文件运行kafka broker shutdown时，有一个 NoClassDefFoundError 类异常，我不知道如何解决它。请帮忙。
命令：

bin/kafka-run-class.sh kafka.admin.ShutdownBroker --zookeeper 172.19.41.48:2181,172.19.41.50:2181,172.19.41.52:2181,172.19.41.55:2181,172.19.41.57:2181/huadong/kafka --broker 5 --num.retries 3 --retry.interval.ms 600

例外情况：

kafka.admin.ShutdownBroker --zookeeper 172.19.41.48:2181,172.19.41.50:2181,172.19.41.52:2181,172.19.41.55:2181,172.19.41.57:2181/huadong/kafka --broker 5 --num.retries 3 --retry.interval.ms 600
/export/servers/jdk1.6.0_25/bin/java -Xmx256M -server -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:+CMSScavengeBeforeRemark -XX:+DisableExplicitGC -Djava.awt.headless=true -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Dkafka.logs.dir=bin/../logs -Dlog4j.configuration=file:bin/../config/tools-log4j.properties -cp .:/export/servers/jdk1.6.0_25/lib/dt.jar:/export/servers/jdk1.6.0_25/lib/tools.jar:bin/../core/build/dependant-libs-2.10.4*/*.jar:bin/../examples/build/libs//kafka-examples*.jar:bin/../contrib/hadoop-consumer/build/libs//kafka-hadoop-consumer*.jar:bin/../contrib/hadoop-producer/build/libs//kafka-hadoop-producer*.jar:bin/../clients/build/libs/kafka-clients*.jar:bin/../libs/jopt-simple-3.2.jar:bin/../libs/kafka_2.11-0.8.2.1.jar:bin/../libs/kafka_2.11-0.8.2.1-javadoc.jar:bin/../libs/kafka_2.11-0.8.2.1-scaladoc.jar:bin/../libs/kafka_2.11-0.8.2.1-sources.jar:bin/../libs/kafka_2.11-0.8.2.1-test.jar:bin/../libs/kafka-clients-0.8.2.1.jar:bin/../libs/log4j-1.2.16.jar:bin/../libs/lz4-1.2.0.jar:bin/../libs/metrics-core-2.2.0.jar:bin/../libs/scala-library-2.11.5.jar:bin/../libs/scala-parser-combinators_2.11-1.0.2.jar:bin/../libs/scala-xml_2.11-1.0.2.jar:bin/../libs/slf4j-api-1.7.6.jar:bin/../libs/slf4j-log4j12-1.6.1.jar:bin/../libs/snappy-java-1.1.1.6.jar:bin/../libs/zkclient-0.3.jar:bin/../libs/zookeeper-3.4.6.jar:bin/../core/build/libs/kafka_2.10*.jar kafka.admin.ShutdownBroker --zookeeper 172.19.41.48:2181,172.19.41.50:2181,172.19.41.52:2181,172.19.41.55:2181,172.19.41.57:2181/huadong/kafka --broker 5 --num.retries 3 --retry.interval.ms 600
Exception in thread "main" java.lang.NoClassDefFoundError: kafka/admin/ShutdownBroker
Caused by: java.lang.ClassNotFoundException: kafka.admin.ShutdownBroker
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: kafka.admin.ShutdownBroker.  Program will exit.

类路径： [admin@A06-R12-302F0402-I36-59 kafka_2.11-0.9.0.1]$ echo $CLASSPATH .:/export/servers/jdk1.7.0_71/lib/dt.jar:/export/servers/jdk1.7.0_71/lib/tools.jar:/export/servers/kafka_2.11-0.9.0.1/libs/*