1 检查当前系统 Java 版本
[root@geo ~]# java -version
![图片[1]-CentOS 7 安装 Java 11 / Java 17-地理信息云](https://kodo.giscloud.com.cn/web/2023/05/20230517165111866.png?imageMogr2/auto-orient/thumbnail/1000x/blur/1x0/quality/100|watermark/1/image/aHR0cHM6Ly9rb2RvLmdpc2Nsb3VkLmNvbS5jbi93ZWIvMjAyMi8wOS8yMDIyMDkyNzE0NDgxNTYyMS5wbmc=/dissolve/30/gravity/SouthEast/dx/20/dy/10|imageslim)
2 检查 Java 安装地址
[root@geo ~]# which java
![图片[2]-CentOS 7 安装 Java 11 / Java 17-地理信息云](https://kodo.giscloud.com.cn/web/2023/05/20230517165157798.png?imageMogr2/auto-orient/thumbnail/1000x/blur/1x0/quality/100|watermark/1/image/aHR0cHM6Ly9rb2RvLmdpc2Nsb3VkLmNvbS5jbi93ZWIvMjAyMi8wOS8yMDIyMDkyNzE0NDgxNTYyMS5wbmc=/dissolve/30/gravity/SouthEast/dx/20/dy/10|imageslim)
本文以 java 11 演示安装,java 17 及其他版本安装方式相同。
3 下载 jdk 11 并上传到指定位置
本次安装指定到/usr/lib/jvm
[root@geo ~]# wget https://repo.huaweicloud.com/openjdk/11.0.1/openjdk-11.0.1_linux-x64_bin.tar.gz
![图片[3]-CentOS 7 安装 Java 11 / Java 17-地理信息云](https://kodo.giscloud.com.cn/web/2023/05/20230517171019389.png?imageMogr2/auto-orient/thumbnail/1000x/blur/1x0/quality/100|watermark/1/image/aHR0cHM6Ly9rb2RvLmdpc2Nsb3VkLmNvbS5jbi93ZWIvMjAyMi8wOS8yMDIyMDkyNzE0NDgxNTYyMS5wbmc=/dissolve/30/gravity/SouthEast/dx/20/dy/10|imageslim)
![图片[4]-CentOS 7 安装 Java 11 / Java 17-地理信息云](https://kodo.giscloud.com.cn/web/2023/05/20230517171056987.png?imageMogr2/auto-orient/thumbnail/1000x/blur/1x0/quality/100|watermark/1/image/aHR0cHM6Ly9rb2RvLmdpc2Nsb3VkLmNvbS5jbi93ZWIvMjAyMi8wOS8yMDIyMDkyNzE0NDgxNTYyMS5wbmc=/dissolve/30/gravity/SouthEast/dx/20/dy/10|imageslim)
4 安装
[root@geo ~]# ls
anaconda-ks.cfg initial-setup-ks.cfg openjdk-11.0.1_linux-x64_bin.tar.gz
[root@geo ~]# tar xf openjdk-11.0.1_linux-x64_bin.tar.gz
[root@geo ~]# ls
anaconda-ks.cfg initial-setup-ks.cfg jdk-11.0.1 openjdk-11.0.1_linux-x64_bin.tar.gz
[root@geo ~]# mv jdk-11.0.1/ /usr/lib/jvm
[root@geo ~]# cd /usr/lib/jvm
[root@geo jvm]# ls
jdk-11.0.1
![图片[5]-CentOS 7 安装 Java 11 / Java 17-地理信息云](https://kodo.giscloud.com.cn/web/2023/05/20230517171928224.png?imageMogr2/auto-orient/thumbnail/1000x/blur/1x0/quality/100|watermark/1/image/aHR0cHM6Ly9rb2RvLmdpc2Nsb3VkLmNvbS5jbi93ZWIvMjAyMi8wOS8yMDIyMDkyNzE0NDgxNTYyMS5wbmc=/dissolve/30/gravity/SouthEast/dx/20/dy/10|imageslim)
5 配置环境变量
[root@geo jvm]# sudo vi /etc/profile
export JAVA_HOME=/usr/lib/jvm/jdk-11.0.1
export CLASSPATH=$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
[root@geo jvm]# source /etc/profile
![图片[6]-CentOS 7 安装 Java 11 / Java 17-地理信息云](https://kodo.giscloud.com.cn/web/2023/05/20230517172657577.png?imageMogr2/auto-orient/thumbnail/1000x/blur/1x0/quality/100|watermark/1/image/aHR0cHM6Ly9rb2RvLmdpc2Nsb3VkLmNvbS5jbi93ZWIvMjAyMi8wOS8yMDIyMDkyNzE0NDgxNTYyMS5wbmc=/dissolve/30/gravity/SouthEast/dx/20/dy/10|imageslim)
5 验证安装
[root@geo jvm]# java -version
![图片[7]-CentOS 7 安装 Java 11 / Java 17-地理信息云](https://kodo.giscloud.com.cn/web/2023/05/20230517172923368.png?imageMogr2/auto-orient/thumbnail/1000x/blur/1x0/quality/100|watermark/1/image/aHR0cHM6Ly9rb2RvLmdpc2Nsb3VkLmNvbS5jbi93ZWIvMjAyMi8wOS8yMDIyMDkyNzE0NDgxNTYyMS5wbmc=/dissolve/30/gravity/SouthEast/dx/20/dy/10|imageslim)
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