eclipse:
直接百度搜索下载就好
tomcat：
http://tomcat.apache.org/download-70.cgi
jdk：
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
VirtualBox : 5.1.10
https://www.virtualbox.org/wiki/Download_Old_Builds_5_1
ubuntu:
https://www.ubuntu.com/download/alternative-downloads
Spark：2.0.2
http://spark.apache.org/releases/spark-release-2-0-2.html
Scala: 2.12.0 :
http://www.scala-lang.org/download/2.12.0.html
Hadoop： 2.7.3
http://www.apache.org/dyn/closer.cgi/hadoop/common/hadoop-2.7.3/hadoop-2.7.3.tar.gz
NodeJs :
https://nodejs.org/en/download/current/
