CentOS 7 安裝jdk，centos安裝jdk

CentOS 7 安裝jdk，centos安裝jdk

查看系統版本

[root@zabbix ~]# cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core) [root@zabbix ~]# uname -aLinux zabbix.com 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

下載jdk包，這裡我選擇的是oracle的java tar.gz包

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
然後可以用wget 命令下載。如果沒有wget命令的話yum install wget -y

開始安裝jdk，首先解壓

tar -xf jdk-8u65-linux-x64.gz /usr/local/ln -s /usr/local/jdk1.8.0_65 /usr/local/java/

添加環境變數

[root@zabbix ~]#vim /etc/profile.d/java.shJAVA_HOME=/usr/local/javaJAVA_BIN=$JAVA_HOME/binJRE_HOME=$JAVA_HOME/jreJRE_BIN=$JRE_HOME/binCLASSPATH=$JAVA_HOME/jre/lib:$JAVA_HOME/lib:$JAVA_HOME/jre/lib/charsets.jarPATH=$PATH:$JAVA_BIN:$JRE_BIN:$CLASSPATH

查看是否安裝成功

[root@zabbix ~]# java -versionjava version "1.8.0_65"Java(TM) SE Runtime Environment (build 1.8.0_65-b17)Java HotSpot(TM) 64-Bit Server VM (build 25.65-b01, mixed mode)

如果機器本身內建了jdk需要自己先行卸載。以免後面影響。