Centos7 源码安装JDK8

1、源码下载
jdk-8u131-linux-x64.tar.gz
官网地址：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2、解压安装包，重命名为jdk
[root@QIANZI-BASE home]# tar -zvxf jdk-8u131-linux-x64.tar.gz
[root@QIANZI-BASE home]# mv jdk1.8.0_131 jdk

3、安装jdk到/usr/local/
[root@QIANZI-BASE home]# mv jdk /usr/local/
[root@QIANZI-BASE home]# cd /usr/local/

4、配置环境变量
[root@QIANZI-BASE local]# vim /etc/profile
在文件尾添加：

export JAVA_HOME=/usr/local/jdk

export JRE_HOME=/usr/local/jdk/jre

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib

export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

5、使立即生效
source /etc/profile

6、验证
[root@QIANZI-BASE local]# java -version

java version "1.8.0_131"

Java(TM) SE Runtime Environment (build 1.8.0_131-b11)

Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)