ubuntu安裝 java 和 maven

• java

  版本：jkd8

  下載下傳壓縮包:

wget https://download.oracle.com/otn/java/jdk/8u231-b11/5b13a193868b4bf28bcb45c792fce896/jdk-8u231-linux-x64.tar.gz?AuthParam=1576836784_a370083020a4957068dd98e81ff9be48
           

解壓：

tar xzvf jdk-8u231-linux-x64.tar.gz  -C /usr/lib/jdk8
           

配置環境變量：

打開 ~/.bashrc ,添加如下内容

export JAVA_HOME=/usr/lib/jdk8
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH
           

• maven

  版本：3.6.3

  下載下傳壓縮包:

wget https://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz```
           

解壓：

tar xzvf apache-maven-3.6.3-bin.tar.gz -C /opt/maven
           

配置環境變量：

打開/etc/profile,添加如下内容

export M2_HOME=/opt/maven/apache-maven-3.6.3
export CLASSPATH=$CLASSPATH:$M2_HOME/lib
export PATH=$PATH:$M2_HOME/bin
           

source 一下

source /etc/profile
source ~/.bashrc
           

指令行測試

java -version
java version "1.8.0_231"
Java(TM) SE Runtime Environment (build 1.8.0_231-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.231-b11, mixed mode)
           

mvn -v
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: /opt/maven/apache-maven-3.6.3
Java version: 1.8.0_231, vendor: Oracle Corporation, runtime: /usr/lib/jdk8/jre
Default locale: en, platform encoding: UTF-8
OS name: "linux", version: "3.10.0-957.21.3.el7.x86_64", arch: "amd64", family: "unix"