scala.util.matching.Regex V

一、出现问题

Scala的版本与spark的版本的不匹配的时候会出现。maven依赖的Scala；电脑环境变量的Scala；IDEA的全局sdk的Scala。
都没有问题时还是会出现Exception in thread "main" java.lang.NoSuchMethodError: scala.util.matching.Regex.<init>(Ljava/lang/
可以在maven的pom里面配置以下：
<repositories>
    <repository>
        <id>scala-tools.org</id>
        <name>Scala-Tools Maven2 Repository</name>
        <url>http://scala-tools.org/repo-releases</url>
    </repository>
</repositories>

二、以下问题

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/spark/Logging
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at org.apache.spark.streaming.kafka.KafkaUtils$.createStream(KafkaUtils.scala:91)
	at org.apache.spark.streaming.kafka.KafkaUtils$.createStream(KafkaUtils.scala:66)
	at spark.streaming.RealTimeCount$.main(RealTimeCount.scala:24)
	at spark.streaming.RealTimeCount.main(RealTimeCount.scala)
Caused by: java.lang.ClassNotFoundException: org.apache.spark.Logging
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 16 more