记一次Exception in thread “main“ java.lang.NoClassDefFoundError: scala/Product$class

记一次Exception in thread "main" java.lang.NoClassDefFoundError: scala/Product$class

Scala版本不一致导致的

Exception in thread "main" java.lang.NoClassDefFoundError: scala/Product$class
        at scopt.OptionParser.(options.scala:175)
        at com.common.RichOptionParser.(RichOptionParser.scala:6)
        at com.task.utils.Parser$$anon$1.(Parser.scala:16)
        at com.task.utils.Parser$.getOpt(Parser.scala:16)
        at com.task.test.AppInviteMergeSpark$.main(AppInviteMergeSpark.scala:95)
        at com.task.test.AppInviteMergeSpark.main(AppInviteMergeSpark.scala)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.spark.deploy.JavaMainApplication.start(SparkApplication.scala:52)
        at org.apache.spark.deploy.SparkSubmit.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:928)
        at org.apache.spark.deploy.SparkSubmit.doRunMain$1(SparkSubmit.scala:180)
        at org.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:203)
        at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:90)
        at org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:1007)
        at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:1016)
        at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
Caused by: java.lang.ClassNotFoundException: scala.Product$class
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        .. 18 more

1.查看pom文件的scala版本和全局是否一致

    org.scala-lang
    scala-library
    2.12.10

2.如果一致还是出错那就试一下以下操作

3，如果还是报错 那就是pom文件引入的组件依赖的scala版本和项目使用的scala版本不一致导致的

        
            com.github.scopt
            scopt_2.11
            3.4.0
        
        //使用的是scala2.11的版本，必须引入3.5.0依赖的才是scala 2.12的