CentOS7上安裝 JDK8

時間 2019-12-05

標籤 centos7 centos 安裝 jdk8 jdk 欄目 Tomcat 简体版

原文原文鏈接

CentOS 7 安裝成功後可能已經默認安裝了 OpenJDK 的 JRE，但平時進行 JAVA 開發時須要用完整的 JDK，因此爲了不之後沒必要要的麻煩，在此卸載了 OpenJDK 的 JRE，並從新安裝了 Oracle 的 JDK8html

安裝說明 系統環境：CentOS 7 安裝方式：rpm 安裝包：jdk-8u131-linux-x64.rpm 百度雲下載地址：pan.baidu.com/s/1pKOsUDljava

檢查系統原安裝版本node

[hadoop@centos7-1 ~]$ java -version
OpenJDK Version "1.8.0_131"
OpenJDK Runtime Environment (build 1.8.0_131-b12)
OpenJDK 64-Bit Server VM (build 25.131-b12, mixed mode)
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[hadoop@centos7-1 ~]$ rpm -qa|grep java
libvirt-java-devel-0.4.9-4.el7.noarch
tzdata-java-2017b-1.el7.noarch
java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
java-1.7.0-openjdk-1.7.0.141-2.6.10.1.el7_3.x86_64
libvirt-java-0.4.9-4.el7.noarch
javapackages-tools-3.4.1-11.el7.noarch
java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.1.el7_3.x86_64
java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
python-javapackages-3.4.1-11.el7.noarch
[hadoop@centos7-1 ~]$ 
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卸載系統已安裝的openjdkpython

libvirt-java-devel-0.4.9-4.el7.noarch libvirt-java-0.4.9-4.el7.noarch tzdata-java-2017b-1.el7.noarch java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64 java-1.7.0-openjdk-1.7.0.141-2.6.10.1.el7_3.x86_64 java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.1.el7_3.x86_64 java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64linux

以root身份運行如下命令centos

[root@centos7-1 hadoop]# rpm -e --nodeps libvirt-java-devel-0.4.9-4.el7.noarch
[root@centos7-1 hadoop]# rpm -e --nodeps libvirt-java-0.4.9-4.el7.noarch
[root@centos7-1 hadoop]# rpm -e --nodeps tzdata-java-2017b-1.el7.noarch
[root@centos7-1 hadoop]# rpm -e --nodeps java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.1.el7_3.x86_64
[root@centos7-1 hadoop]# rpm -e --nodeps java-1.7.0-openjdk-1.7.0.141-2.6.10.1.el7_3.x86_64
[root@centos7-1 hadoop]# rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
[root@centos7-1 hadoop]# rpm -e --nodeps java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
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安裝jdkbash

[root@centos7-1 local]# ll /usr/local/jdk-8u131-linux-x64.rpm 
 -rw-r--r--. 1 root root 169983496 6月  12 23:17 /usr/local/jdk-8u131-linux-x64.rpm
[root@centos7-1 local]# rpm -ivh jdk-8u131-linux-x64.rpm 
 Preparing...                          ################################# [100%]
 Updating / installing...
   1:jdk1.8.0_131-2000:1.8.0_131-fcs  ################################# [100%]
 Unpacking JAR files...
   tools.jar...
   plugin.jar...
   javaws.jar...
   deploy.jar...
   rt.jar...
   jsse.jar...
   charsets.jar...
   localedata.jar...
[root@centos7-1 local]# 
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jdk默認安裝到了 /usr/java/ 下面oracle

[root@centos7-1 local]# ll /usr/java/
total 0
lrwxrwxrwx. 1 root root  16 6月  12 23:18 default -> /usr/java/latest
drwxr-xr-x. 9 root root 268 6月  12 23:18 jdk1.8.0_131
lrwxrwxrwx. 1 root root  22 6月  12 23:18 latest -> /usr/java/jdk1.8.0_131
[root@centos7-1 local]# 
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驗證安裝less

[root@centos7-1 local]# ll /usr/bin/java
lrwxrwxrwx. 1 root root 22 6月  12 23:18 /usr/bin/java -> /etc/alternatives/java
[root@centos7-1 local]# ll /etc/alternatives/java
lrwxrwxrwx. 1 root root 35 6月  12 23:18 /etc/alternatives/java -> /usr/java/jdk1.8.0_131/jre/bin/java
[root@centos7-1 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)
[root@centos7-1 local]# 
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配置環境變量oop

[hadoop@centos7-1 ~]$ whoami
hadoop
[hadoop@centos7-1 ~]$ vi ~/.bashrc
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設置JAVA_HOME，並將它加到PATH中

JAVA_HOME=/usr/java/default
PATH=$PATH:$JAVA_HOME/bin

export JAVA_HOME PATH
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運行source命令，使修改生效。輸出JAVA_HOME, PATH確認修改是否生效。

[hadoop@centos7-1 ~]$ source ~/.bashrc
[hadoop@centos7-1 ~]$ echo $JAVA_HOME
/usr/java/default
[hadoop@centos7-1 ~]$ echo $PATH
/usr/lib64/qt-3.3/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin:/home/hadoop/.local/bin:/home/hadoop/bin:/usr/java/default/bin
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至此，CentOS 7上安裝JDK8順利完畢~