[hyper-V] centos 7 安装 java

# centos安装 java

[root@bogon ~]# java -version
openjdk version "1.8.0_102"
OpenJDK Runtime Environment (build 1.8.0_102-b14)
OpenJDK 64-Bit Server VM (build 25.102-b14, mixed mode)

 

进一步查看JDK信息：

[root@bogon ~]# rpm -qa|grep java
java-1.8.0-openjdk-1.8.0.102-4.b14.el7.x86_64
tzdata-java-2016g-2.el7.noarch
javapackages-tools-3.4.1-11.el7.noarch
java-1.8.0-openjdk-headless-1.8.0.102-4.b14.el7.x86_64
java-1.7.0-openjdk-headless-1.7.0.111-2.6.7.8.el7.x86_64
java-1.7.0-openjdk-1.7.0.111-2.6.7.8.el7.x86_64
python-javapackages-3.4.1-11.el7.noarch
[root@bogon ~]#

 

卸载OpenJDK，执行以下操作：

rpm -e --nodeps java-1.8.0-openjdk-1.8.0.102-4.b14.el7.x86_64
rpm -e --nodeps tzdata-java-2016g-2.el7.noarch
rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.102-4.b14.el7.x86_64
rpm -e --nodeps java-1.7.0-openjdk-headless-1.7.0.111-2.6.7.8.el7.x86_64
rpm -e --nodeps java-1.7.0-openjdk-1.7.0.111-2.6.7.8.el7.x86_64

 

> 下载jdk
 

wget --no-check-certificate --no-cookie --header "Cookie: oraclelicense=accept-securebackup-cookie;" http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.rpm 

 

>因为oracle现在要同意协议才能下载，直接使用wget加链接下载不到，所以要加上前面的那些代码.

## 使用rpm安装下载的包
 

rpm -ivh jdk-8u144-linux-x64.rpm 

 输出

[root@bogon ~]# wget --no-check-certificate --no-cookie --header "Cookie: oraclelicense=accept-securebackup-cookie;" http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.rpm
--2017-09-05 15:25:45-- http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.rpm
Resolving download.oracle.com (download.oracle.com)... 184.50.238.49, 184.50.238.48
Connecting to download.oracle.com (download.oracle.com)|184.50.238.49|:80... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: https://edelivery.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.rpm [following]
--2017-09-05 15:25:46-- https://edelivery.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.rpm
Resolving edelivery.oracle.com (edelivery.oracle.com)... 184.50.91.58, 2600:1417:e:289::2d3e, 2600:1417:e:282::2d3e
Connecting to edelivery.oracle.com (edelivery.oracle.com)|184.50.91.58|:443... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.rpm?AuthParam=1504596464_3396241443c18f4fee2b51825ffccb26 [following]
--2017-09-05 15:25:46-- http://download.oracle.com/otn-pub/java/jdk/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.rpm?AuthParam=1504596464_3396241443c18f4fee2b51825ffccb26
Connecting to download.oracle.com (download.oracle.com)|184.50.238.49|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 169971490 (162M) [application/x-redhat-package-manager]
Saving to: ‘jdk-8u144-linux-x64.rpm’

100%[===================================================================================================>] 169,971,490 1.65MB/s in 1m 40s

2017-09-05 15:27:26 (1.63 MB/s) - ‘jdk-8u144-linux-x64.rpm’ saved [169971490/169971490]

[root@bogon ~]# rpm -ivh jdk-8u144-linux-x64.rpm 
Preparing... ################################# [100%]
Updating / installing...
1:jdk1.8.0_144-2000:1.8.0_144-fcs ################################# [100%]
Unpacking JAR files...
tools.jar...
plugin.jar...
javaws.jar...
deploy.jar...
rt.jar...
jsse.jar...
charsets.jar...
localedata.jar...
[root@bogon ~]# java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
[root@bogon ~]#

 

# 配置环境变量

lrwxrwxrwx. 1 root root 16 Sep 5 15:28 default -> /usr/java/latest
drwxr-xr-x. 9 root root 268 Sep 5 15:28 jdk1.8.0_144
lrwxrwxrwx. 1 root root 22 Sep 5 15:28 latest -> /usr/java/jdk1.8.0_144
[root@bogon java]# pwd
/usr/java

 

>向 /etc/profile文件末尾追加以下内容

[root@bogon java]# sudo vim /etc/profile


JAVA_HOME=/usr/java/latest
JRE_HOME=/usr/java/latest/jre
PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$JRE_HOME/lib
export JAVA_HOME JRE_HOME PATH CLASSPATH


[root@bogon java]# source /etc/profile //使修改立即生效
[root@bogon java]# echo $PATH //查看PATH值
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/usr/java/latest/bin:/usr/java/latest/jre/bin
[root@bogon java]#