Spark启动WordCount计算程序出现ERROR SparkContext: Error initializing SparkContext.org.apache.spark.SparkExce

问题：

运行程序是出现

20/04/03 13:59:41 ERROR SparkContext: **Error initializing SparkContext.**
org.apache.spark.SparkException: **A master URL must be set in your configuration**
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:376)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:117)
	at com.czxy.Spark02.Wcount$.main(**Wcount.scala:14**)
	at com.czxy.Spark02.Wcount.main(Wcount.scala)
20/04/03 13:59:41 INFO SparkContext: Successfully stopped SparkContext
Exception in thread "main" org.apache.spark.SparkException: A master URL must be set in your configuration
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:376)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:117)
	at com.czxy.Spark02.Wcount$.main(Wcount.scala:14)
	at com.czxy.Spark02.Wcount.main(Wcount.scala)

原因：
没有把 conf 创建的配置对象放到SparkContext的括号里去

没有放