CentOS7上以rpm方式安装JDK8
时间:2020-02-12来源:系统城作者:电脑系统城
1.安装说明
系统环境:CentOS 7
安装方式:rpm
安装包:jdk-8u131-linux-x64.rpm
2.检查系统原安装版本
- [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)
- [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 ~]$
3.卸载系统已安装的openjdk
- 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_64
以root身份运行以下命令
- [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
4.安装jdk
- [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]#
jdk默认安装到了 /usr/java/ 下面
- [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]#
5.验证安装
- [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]#
6.配置环境变量
- [hadoop@centos7-1 ~]$ whoami
- hadoop
- [hadoop@centos7-1 ~]$ vi ~/.bashrc
设置JAVA_HOME,并将它加到PATH中
- JAVA_HOME=/usr/java/default
- PATH=$PATH:$JAVA_HOME/bin
- export JAVA_HOME PATH
运行source命令,使修改生效。输出JAVA_HOME, PATH确认修改是否生效。
- [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
至此,CentOS 7上安装JDK8顺利完毕,更多关于linux下安装JDK的文章请查看下面相关链接
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