centos7 java 相关环境配置 jdk8，maven（可复制粘贴）

# 1.yum安装
yum install -y java-1.8.0-openjdk.x86_64

vim /etc/profile 

export JAVA_HOME=/usr/lib/jvm/jre-1.8.0-openjdk
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib/
export PATH=$PATH:$JAVA_HOME/bin

# 验证完成安装
java -version

# 2.源码安装
wget https://repo.huaweicloud.com/java/jdk/8u201-b09/jdk-8u201-linux-x64.tar.gz
tar -vzxf jdk-8u201-linux-x64.tar.gz
mv jdk-8u201-linux-x64 jdk
vim /etc/profile

export JAVA_HOME=/usr/local/jdk
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib/
export PATH=$PATH:$JAVA_HOME/bin

source /etc/profile
java -version

wget https://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz
mkdir  -p  /usr/local/maven3
tar -zxvf  apache-maven-3.6.3-bin.tar.gz
mv  apache-maven-3.6.3 /usr/local/maven3
vim  /etc/profile

# set mvn 
export M2_HOME=/usr/local/maven3/apache-maven-3.6.3
export PATH=$PATH:$JAVA_HOME/bin:$M2_HOME/bin

source /etc/profile
# 验证安装
mvn -v