如何在CentOS服务器上安装Java JDK和JRE
时间：2020-02-23 14:30:43 来源:igfitidea点击:
在本教程中，我们将学习在centOS服务器上安装Java JDK和JRE。
前提条件
假设您已经安装了wget。
在终端中使用以下命令来安装wget。
yum install -y wget
如果您没有权限，请使用sudo。
步骤1下载JRE
在本教程中，我们将安装JRE(Java运行时环境)版本7。
打开终端并使用ssh登录到服务器。
现在，将cd转到您要下载文件的目录。
假设我们有一个" Downloads"目录，并且我们想在该文件夹中下载JRE。
在终端中执行以下命令以下载JRE版本7。
wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jre-7u79-linux-x64.rpm"
[~]# cd Downloads [Downloads]# wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jre-7u79-linux-x64.rpm" --2015-12-12 05:07:20-- http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jre-7u79-linux-x64.rpm Resolving download.oracle.com (download.oracle.com)... 96.17.72.58, 96.17.72.66 Connecting to download.oracle.com (download.oracle.com)|96.17.72.58|:80... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: https://edelivery.oracle.com/otn-pub/java/jdk/7u79-b15/jre-7u79-linux-x64.rpm [following] --2015-12-12 05:07:21-- https://edelivery.oracle.com/otn-pub/java/jdk/7u79-b15/jre-7u79-linux-x64.rpm Resolving edelivery.oracle.com (edelivery.oracle.com)... 2600:1413:1:500:8300::2d3e, 2600:1413:1:500:8800::2d3e, 23.67.2.41 Connecting to edelivery.oracle.com (edelivery.oracle.com)|2600:1413:1:500:8300::2d3e|:443... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jre-7u79-linux-x64.rpm?AuthParam=1490850561_4973818e7b56fb9dd787998708cf1ae2 [following] --2015-12-12 05:07:21-- http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jre-7u79-linux-x64.rpm?AuthParam=1490850561_4973818e7b56fb9dd787998708cf1ae2 Connecting to download.oracle.com (download.oracle.com)|96.17.72.58|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 33706160 (32M) [application/x-redhat-package-manager] Saving to: ‘jre-7u79-linux-x64.rpm’ 100%[==================================================================================================>] 33,706,160 3.52MB/s in 9.1s 2015-12-12 05:07:30 (3.52 MB/s) - ‘jre-7u79-linux-x64.rpm’ saved [33706160/33706160] [Downloads]# ls -la total 1028248 drwxr-xr-x 2 root root 4096 Apr 13 05:07 . dr-xr-x---. 6 root root 4096 Apr 13 05:07 .. -rw-r--r-- 1 root root 33706160 Apr 13 2014 jre-7u79-linux-x64.rpm
步骤2安装JRE
在终端中使用以下命令来安装JRE。
yum install jre-7u79-linux-x64.rpm
如果您没有权限，请使用sudo。
[Downloads]# sudo yum install jre-7u79-linux-x64.rpm Loaded plugins: fastestmirror Examining jre-7u79-linux-x64.rpm: jre-1.7.0_79-fcs.x86_64 Marking jre-7u79-linux-x64.rpm to be installed Resolving Dependencies --> Running transaction check ---> Package jre.x86_64 0:1.7.0_79-fcs will be installed --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================================================ Package Arch Version Repository Size ============================================================================================================================================ Installing: jre x86_64 1.7.0_79-fcs /jre-7u79-linux-x64 81 M Transaction Summary ============================================================================================================================================ Install 1 Package Total size: 81 M Installed size: 81 M Is this ok [y/d/N]: y Downloading packages: Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : jre-1.7.0_79-fcs.x86_64 1/1 Unpacking JAR files... rt.jar... jsse.jar... charsets.jar... localedata.jar... jfxrt.jar... Verifying : jre-1.7.0_79-fcs.x86_64 1/1 Installed: jre.x86_64 0:1.7.0_79-fcs Complete! [Downloads]#
步骤3下载JDK
在本教程中，我们将下载并安装JDK(Java开发工具包)版本7。
使用以下命令下载JDK版本7。
wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm"
[Downloads]# wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm" --2015-12-12 05:14:04-- http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm Resolving download.oracle.com (download.oracle.com)... 96.17.72.66, 96.17.72.58 Connecting to download.oracle.com (download.oracle.com)|96.17.72.66|:80... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: https://edelivery.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm [following] --2015-12-12 05:14:04-- https://edelivery.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm Resolving edelivery.oracle.com (edelivery.oracle.com)... 2600:1413:1:500:8800::2d3e, 2600:1413:1:500:8300::2d3e, 23.67.2.41 Connecting to edelivery.oracle.com (edelivery.oracle.com)|2600:1413:1:500:8800::2d3e|:443... connected. HTTP request sent, awaiting response... 302 Moved Temporarily Location: http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm?AuthParam=1490850965_eb153a76b759c1c9d185ee439e9de862 [following] --2015-12-12 05:14:05-- http://download.oracle.com/otn-pub/java/jdk/7u79-b15/jdk-7u79-linux-x64.rpm?AuthParam=1490850965_eb153a76b759c1c9d185ee439e9de862 Connecting to download.oracle.com (download.oracle.com)|96.17.72.66|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 138082565 (132M) [application/x-redhat-package-manager] Saving to: ‘jdk-7u79-linux-x64.rpm’ 100%[==================================================================================================>] 138,082,565 3.97MB/s in 35s 2015-12-12 05:14:41 (3.72 MB/s) - ‘jdk-7u79-linux-x64.rpm’ saved [138082565/138082565] [Downloads]#
步骤4安装JDK
要安装JDK，请在终端中使用以下命令。
yum install jdk-7u79-linux-x64.rpm
如果您没有权限，请使用sudo。
[Downloads]# sudo yum install jdk-7u79-linux-x64.rpm Loaded plugins: fastestmirror Examining jdk-7u79-linux-x64.rpm: 2000:jdk-1.7.0_79-fcs.x86_64 Marking jdk-7u79-linux-x64.rpm to be installed Resolving Dependencies --> Running transaction check ---> Package jdk.x86_64 2000:1.7.0_79-fcs will be installed --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================================================ Package Arch Version Repository Size ============================================================================================================================================ Installing: jdk x86_64 2000:1.7.0_79-fcs /jdk-7u79-linux-x64 209 M Transaction Summary ============================================================================================================================================ Install 1 Package Total size: 209 M Installed size: 209 M Is this ok [y/d/N]: y Downloading packages: Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : 2000:jdk-1.7.0_79-fcs.x86_64 1/1 Unpacking JAR files... rt.jar... jsse.jar... charsets.jar... tools.jar... localedata.jar... jfxrt.jar... Verifying : 2000:jdk-1.7.0_79-fcs.x86_64 1/1 Installed: jdk.x86_64 2000:1.7.0_79-fcs Complete! [Downloads]#
步骤5设置环境
现在，打开.bash_profile文件并设置JAVA_HOME和JRE_HOME。
[Downloads]# cd [~]# ls -la total 96 dr-xr-x---. 8 root root 4096 Dec 31 20:15 . drwxr-xr-x 18 root root 4096 Dec 29 06:15 .. -rw-------. 1 root root 11146 Dec 31 20:39 .bash_history -rw-r--r--. 1 root root 18 Dec 29 2013 .bash_logout -rw-r--r-- 1 root root 429 Dec 31 10:38 .bash_profile
使用vi或者vim打开.bash_profile文件。
[~]# vi .bash_profile
现在添加以下行。
按i键切换到INSERT模式。
export JAVA_HOME=/usr/java/jdk1.7.0_79 export JRE_HOME=/usr/java/jdk.7.0_79/jre PATH=$HOME/bin:$JAVA_HOME/bin:$JRE_HOME:$PATH
按Esc键退出INSERT模式。
现在输入：wq保存更改并退出。
现在，使用source命令加载更改。
[~]# source .bash_profile
所有设置完毕，现在通过在终端中执行以下命令来检查Java版本。
[~]# java -version java version "1.7.0_79" Java(TM) SE Runtime Environment (build 1.7.0_79-b15) Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)
