修改simple.sbt文件：
cd /usr/local/spark/myapp/TestStream vim simple.sbt
切记：中间相连部分两个百分号一定要写上
sbt打包error(sbt.librarymanagement.ResolveException: unresolved dependency: org.apache.spark#spark-streaming;2.3.1: not found)
原文：https://www.cnblogs.com/CYRgrowing1215/p/9637494.html
