伺服器安裝jdk（rpm安裝）
阿新 • • 發佈：2022-04-16
1、rpm下載地址http://www.oracle.com/technetwork/java/javase/downloads/index.html
2、如果有安裝openjdk 則解除安裝
[root@kuangshen ~]# java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
# 檢查
[root@kuangshen ~]# rpm -qa|grep jdk
jdk1.8.0_121-1.8.0_121-fcs.x86_64
# 解除安裝 -e --nodeps 強制刪除
[root@kuangshen ~]# rpm -e --nodeps jdk1.8.0_121-1.8.0_121-fcs.x86_64
[root@kuangshen ~]# java -version
-bash: /usr/bin/java: No such file or directory # OK
3、安裝JDK
# 安裝java rpm
[root@kuangshen kuangshen]# rpm -ivh jdk-8u221-linux-x64.rpm
# 安裝完成後配置環境變數 檔案：/etc/profile
JAVA_HOME=/usr/java/jdk1.8.0_221-amd64
CLASSPATH=%JAVA_HOME%/lib:%JAVA_HOME%/jre/lib
PATH=$PATH:$JAVA_HOME/bin:$JAVA_HOME/jre/bin
export PATH CLASSPATH JAVA_HOME
# 儲存退出
# 讓新增的環境變數生效！
source /etc/profile
# 測試 java -version
[root@kuangshen java]# java -version
java version "1.8.0_221"
Java(TM) SE Runtime Environment (build 1.8.0_221-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)