安装JDK

标签：java JDK jdk 安装 HOME root centos8

rpm安装 #需要登录下载：https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html

[root@centos8 ~]#ls -lh jdk-8u241-linux-x64.rpm
-rw-r--r-- 1 root root 171M Feb  8 18:29 jdk-8u241-linux-x64.rpm

#安装jdk，无相关依赖包
[root@centos8 ~]#dnf -y install jdk-8u241-linux-x64.rpm
[root@centos8 ~]#java -version
java version "1.8.0_241"
Java(TM) SE Runtime Environment (build 1.8.0_241-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode)
#初始化环境变量
[root@centos8 ~]#vim /etc/profile.d/jdk.sh
[root@centos8 ~]#cat /etc/profile.d/jdk.sh
export JAVA_HOME=/usr/java/default
export PATH=$JAVA_HOME/bin:$PATH
#以下两项非必须项

  export JRE_HOME=$JAVA_HOME/jre   export CLASSPATH=$JAVA_HOME/lib/:$JRE_HOME/lib/

  [root@centos8 ~]#. /etc/profile.d/jdk.sh   #运行

 

二进制文件安装
[root@centos8 ~]#tar xvf jdk-8u241-linux-x64.tar.gz -C /usr/local/
[root@centos8 ~]#cd /usr/local/
[root@centos8 ~]#ln -s jdk1.8.0_241/ jdk
#初始化环境变量
[root@centos8 ~]#vim /etc/profile.d/jdk.sh
[root@centos8 ~]#cat /etc/profile.d/jdk.sh 
export JAVA_HOME=/usr/local/jdk
export PATH=$PATH:$JAVA_HOME/bin
#以下两项非必须项
#export JRE_HOME=$JAVA_HOME/jre 
#export CLASSPATH=.:$JAVA_HOME/lib/:$JRE_HOME/lib/
[root@centos8 ~]#. /etc/profile.d/jdk.sh
#注意:JAVA_HOME变量必须设置,否则tomcat启动时会出下面错误
[root@centos8 ~]#catalina.sh
Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
At least one of these environment variable is needed to run this program
[root@centos8 ~]#startup.sh 
Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
At least one of these environment variable is needed to run this program

#验证安装
[root@centos8 ~]#java -version
java version "1.8.0_241"
Java(TM) SE Runtime Environment (build 1.8.0_241-b07)
Java HotSpot(TM) 64-Bit Server VM (build 25.241-b07, mixed mode)
[root@centos8 ~]#which java
/usr/local/jdk/bin/java

 

一键安装二进制的JDK
[root@ubuntu1804 ~]#vim install_jdk.sh
JDK_FILE="jdk-11.0.15.1_linux-x64_bin.tar.gz"
#JDK_FILE="jdk-11.0.12_linux-x64_bin.tar.gz"
#JDK_FILE="jdk-8u301-linux-x64.tar.gz"

JDK_DIR="/usr/local"

DIR=`pwd`

color () {
    RES_COL=60
    MOVE_TO_COL="echo -en \\033[${RES_COL}G"
    SETCOLOR_SUCCESS="echo -en \\033[1;32m"
    SETCOLOR_FAILURE="echo -en \\033[1;31m"
    SETCOLOR_WARNING="echo -en \\033[1;33m"
    SETCOLOR_NORMAL="echo -en \E[0m"
    echo -n "$2" && $MOVE_TO_COL
    echo -n "["
    if [ $1 = "success" -o $1 = "0" ] ;then
        ${SETCOLOR_SUCCESS}
        echo -n $"  OK  "    
    elif [ $1 = "failure" -o $1 = "1"  ] ;then
        ${SETCOLOR_FAILURE}
        echo -n $"FAILED"
    else
        ${SETCOLOR_WARNING}
        echo -n $"WARNING"
    fi
    ${SETCOLOR_NORMAL}
    echo -n "]"
    echo                                                                                                                              
}

install_jdk(){
if !  [  -f "$DIR/$JDK_FILE" ];then
    color 1  "$JDK_FILE 文件不存在" 
    exit; 
elif [ -d $JDK_DIR/jdk ];then
        color 1  "JDK 已经安装" 
    exit
else 
        [ -d "$JDK_DIR" ] || mkdir -pv $JDK_DIR
fi
tar xvf $DIR/$JDK_FILE  -C $JDK_DIR
cd  $JDK_DIR && ln -s jdk* jdk 

cat >  /etc/profile.d/jdk.sh <<EOF
export JAVA_HOME=$JDK_DIR/jdk
export PATH=\$PATH:\$JAVA_HOME/bin
#export JRE_HOME=\$JAVA_HOME/jre
#export CLASSPATH=.:\$JAVA_HOME/lib/:\$JRE_HOME/lib/
EOF
.  /etc/profile.d/jdk.sh
java -version && color 0  "JDK 安装完成" || { color 1  "JDK 安装失败" ; exit; }

}

install_jdk

 

安装openjdk

yum install java-11-openjdk
yum install java-1.6.0-openjdk
yum install java-1.7.0-openjdk
yum install java-1.8.0-openjdk

 

TRANSLATE with x English

Arabic	Hebrew	Polish
Bulgarian	Hindi	Portuguese
Catalan	Hmong Daw	Romanian
Chinese Simplified	Hungarian	Russian
Chinese Traditional	Indonesian	Slovak
Czech	Italian	Slovenian
Danish	Japanese	Spanish
Dutch	Klingon	Swedish
English	Korean	Thai
Estonian	Latvian	Turkish
Finnish	Lithuanian	Ukrainian
French	Malay	Urdu
German	Maltese	Vietnamese
Greek	Norwegian	Welsh
Haitian Creole	Persian

  TRANSLATE with COPY THE URL BELOW Back EMBED THE SNIPPET BELOW IN YOUR SITE Enable collaborative features and customize widget: Bing Webmaster Portal Back

标签：java,JDK,jdk,安装,HOME,root,centos8
From： https://www.cnblogs.com/qude/p/17480929.html