Exception in thread "main" java.lang.NoSuchMethodError: scala.Predef$.refArrayOps([Ljava/lang/Object;)Lscala/collection/mutable/ArrayOps;

Exception in thread "main" java.lang.NoSuchMethodError: scala.Predef$.refArrayOps([Ljava/lang/Object;)Lscala/collection/mutable/ArrayOps;
at org.apache.spark.util.Utils$.getCallSite(Utils.scala:1440)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:76)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:117)
at com.ajin.practice.WebsiteTopN$.main(WebsiteTopN.scala:19)
at com.ajin.practice.WebsiteTopN.main(WebsiteTopN.scala)

Process finished with exit code 1

原因Maven導入的spark依賴的是Scala2.11 而實際本地是2.12
<!-- 導入spark的依賴 -->
<dependency>
    <groupId>org.apache.spark</groupId>
    <artifactId>spark-core_2.11</artifactId>
    <version>${spark.version}</version>
</dependency>

修改依賴的scala sdk版本到2.11 解決問題