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linux 下安装jdk

linux 下安装jdk

作者: 孤舟远行 | 来源:发表于2017-07-15 13:17 被阅读83次

    卸载已安装的open jdk[1][2]

    • 查看系统已安装的jdk:rpm -qa|grep jdk
    copy-jdk-configs-1.2-1.el7.noarch
    java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
    java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
    
    • 查询java相关的信息:rpm -qa|grep java
    javapackages-tools-3.4.1-11.el7.noarch
    python-javapackages-3.4.1-11.el7.noarch
    java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
    java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
    tzdata-java-2017b-1.el7.noarch
    javamail-1.4.6-8.el7.noarch
    
    • 卸载:
    rpm -e --nodeps copy-jdk-configs-1.2-1.el7.noarch
    rpm -e --nodeps java-1.8.0-openjdk-headless-1.8.0.131-3.b12.el7_3.x86_64
    rpm -e --nodeps java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64
    如果卸载对应后继续运行卸载该命令,会出现以下提示:
    error: package java-1.8.0-openjdk-1.8.0.131-3.b12.el7_3.x86_64 is not installed
    

    安装JDK[1]

    • JDK下载页面找到对应的包,然后进行下载:
      centos:
      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/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.rpm"

    ubuntu:

    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/8u144-b01/090f390dda5b47b9b721c7dfaa008135/jdk-8u144-linux-x64.tar.gz?AuthParam=1504071462_ada46b0cca620eea37f1524f3d72847f"
    
    • 安装:
      centos: rpm -ivh jdk-8u144-linux-x64.rpm
      ubuntu: tar zxf jdk-8u144-linux-x64.tar.gz
    • 校验: 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)
    
    • 设置JAVA_HOME
      1. vim ~/.bashrc,打开该文件
      2. 然后在vim模式下输入a
      3. 定位到文件最后位置,粘贴以下内容
    export JAVA_HOME=/usr/java/jdk1.8.0_131
    export PATH=$PATH:$JAVA_HOME
    
    1. 按下esc
    2. 输入冒号:,然后输入wq保存修改并且推出即可

    或者:

    echo 'export JAVA_HOME="/opt/jdk1.8.0_144"
    export PATH="$JAVA_HOME/bin:$JAVA_HOME/jre:$PATH"' >> ~/.bashrc
    

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