Scala下载及环境搭建

一． Scala下载及环境搭建

1.1. Scala介质

确保本地以及安装了 JDK 1.5 以上版本，并且设置了 JAVA_HOME 环境变量及 JDK 的bin目录。

我们可以使用以下命令查看是否安装了 Java：

[root@hadoop-01 java]# java -version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
[root@hadoop-01 java]# 

Scala下载地址：https://www.scala-lang.org/download/all.html

[hadoop@hadoop-01 software]$ ll
total 213880
-rw-rw-r-- 1 hadoop hadoop 116082695 Feb 21  2018 hive-1.1.0-cdh5.7.0.tar.gz
drwxr-xr-x 9 hadoop hadoop      4096 Mar 24  2016 hue-3.9.0-cdh5.7.0
-rw-rw-r-- 1 hadoop hadoop  66826791 Feb 21  2018 hue-3.9.0-cdh5.7.0.tar.gz
-rw-rw-r-- 1 hadoop hadoop    583045 Aug 13  2011 lzo-2.06.tar.gz
-rw-rw-r-- 1 hadoop hadoop   1040269 Apr 20 11:48 master.zip
-rw-r--r-- 1 hadoop hadoop   4792694 Mar 29 22:06 mysql-connector-java-5.1.46.zip
-rw-r--r-- 1 hadoop hadoop    985603 Mar 30 13:21 mysql-connector-java.jar
-rw-r--r-- 1 hadoop hadoop  28678231 Apr 24 16:34 scala-2.11.8.tgz

1.2. Scala解压

[hadoop@hadoop-01 software]$ tar -zxvf scala-2.11.8.tgz -C/home/hadoop/app/

1.3. Scala配置环境变量

[hadoop@hadoop-01 ~]$ vi ~/.bash_profile

export SCALA_HOME=/home/hadoop/app/scala-2.11.8

export PATH=$SCALA_HOME/bin:$PATH

1.4. 启动Scala

[hadoop@hadoop-01 ~]$ echo $SCALA_HOME
/home/hadoop/app/scala-2.11.8
[hadoop@hadoop-01 ~]$ scala
Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_45).
Type in expressions for evaluation. Or try :help.

scala>