【CentOS7】开发环境配置OpenJDK

【CentOS7】开发环境配置OpenJDK

目录

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1、安装openjdk

2、配置域名

3、安装python

4、安装maven

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1、安装openjdk

下载地址：http://openjdk.java.net/install/

先查看系统有没有自带的openjdk

rpm -qa |grep java
rpm -qa |grep jdk
rpm -qa |grep gcj

如果安装了，首先卸载，批量卸载

rpm -qa | grep java | xargs rpm -e --nodeps

检索yum中有没有java1.8的包

yum list java-1.8*

开始安装，安装目录 /usr/lib/jvm/java-1.8.0

yum install java-1.8.0-openjdk -y

vim /root/.bash_profile

JAVA_HOME=/usr/lib/jvm/java-1.8.0
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export CLASSPATH

vim /etc/profile

JAVA_HOME=/usr/lib/jvm/java-1.8.0
export JAVA_HOME
PATH=$JAVA_HOME/bin:$PATH
export PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export CLASSPATH

生效

source /root/.bash_profile

检查是否配置好了

echo $JAVA_HOME
java -version

2、配置域名

先在/etc/hostname配置想要的域名 consul

在/etc/hosts 配置ip和域名映射 192.168.0.101 consul

 3、安装python

yum -y install epel-release

yum -y install python-pip

 4、安装maven

# curl -O http://mirror.bit.edu.cn/apache/maven/maven-3/3.6.2/binaries/apache-maven-3.6.2-bin.tar.gz
# tar -zxvf apache-maven-3.6.2-bin.tar.gz
# vim /etc/profile
MAVEN_HOME=/usr/local/apache-maven-3.6.2
export MAVEN_HOME
export PATH=${PATH}:${MAVEN_HOME}/bin

# source /etc/profile
# mvn -version
# cd /usr/local/apache-maven-3.6.2
# mkdir repository
# chmod -R 777 repository
# cd /usr/local/apache-maven-3.6.2/conf
# vim settings.xml
<localRepository>/usr/local/apache-maven-3.6.2/repository</localRepository>