安装jdk:
1.下载jdk:jdk-8u181-linux-x64.rpm,并上传服务器;
2.创建java路径:
Cd /usr
Mkdir java
Cd java
3.在java路径下,执行安装:
Yum install jdk-8u181-linux-x64.rpm
4.配置环境变量:
在/etc/profile文件末尾添加如下内容:
#set java environment
JAVA_HOME=/usr/java/jdk1.8.0_181-amd64
JRE_HOME=/usr/java/jdk1.8.0_181-amd64
CALSS_PATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
export JAVA_HOME JRE_HOME CLASS_PATH PATH
5.使环境变量生效:
Source /etc/profile
6.检查安装是否成功
注意:
执行source /etc/profile 或登陆上去出现:
-bash: /usr/java/jdk1.8.0_181-amd64/lib/dt.jar: Permission denied
-bash: /usr/java/jdk1.8.0_181-amd64/lib/tools.jar: Permission denied
-bash: /usr/java/jdk1.8.0_181-amd64/lib: Is a directory
-bash: /usr/java/jdk1.8.0_181-amd64/bin: Is a directory
-bash: /usr/java/jdk1.8.0_181-amd64/bin: Is a directory
原因:配置环境变量使用了分号,要使用冒号
完成操作参考:
https://www.cnblogs.com/songjinju/p/7391188.html
http://lkf009.iteye.com/blog/1327912