centos7 安装jdk8和maven3

centos7 安装jdk8和maven3

标签（空格分隔）： java,linux

jdk

第一种安装：
yum install java-1.8.0-openjdk
/usr/lib/jvm/  默认安装目录

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第二种：
1.下载包tar包
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2.创建目录并解压
cd /usr/local/
mkdir java
cd java
tar -zxvf jdk-8u191-linux-x64.tar.gz

3.设置环境变量
vim /etc/profile

JAVA_HOME=/usr/local/java/jdk1.8.0_191
CLASSPATH=$JAVA_HOME/lib/
PATH=$PATH:$JAVA_HOME/bin
export PATH JAVA_HOME CLASSPATH

:wq
source /etc/profile

4.测试
java -version

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maven

1. 创建目录下载tar包
mkdir -p /usr/local/maven/
cd /usr/local/maven/
wget http://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.tar.gz

2. 解压
tar -zxvf apache-maven-3.3.9-bin.tar.gz

3. 设置环境变量
vim /etc/profile

M2_HOME=/usr/local/maven/apache-maven-3.3.9
export PATH=${M2_HOME}/bin:${PATH}

:wq
source /etc/profile

4. 测试
mvn --version

5.setting.xml 阿里云镜像
<mirror>
    <id>nexus-aliyun</id>
    <mirrorOf>*</mirrorOf>
    <name>Nexus aliyun</name>
    <url>http://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>