一、软件源备份及切换

1. 备份：mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
2. 下载新的CentOS-Base.repo 到/etc/yum.repos.d/

CentOS 5

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

CentOS 6

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

CentOS 7

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo 

3. 之后运行 yum makecache 生成缓存

二、JDK安装(rpm方式）

1. 清理系统默认自带的 JDK

• 如果安装 CentOS 时默认安装了例如 openJDK 等，请先执行 rpm -qa | grep jdk 查看已经自带的 jdk ，然后卸载 sudo yum remove XXX （XXX 为上一个命令查到的结果）

2. 创建 /usr/java 目录（rpm 方式默认安装路径： /usr/java/）

mkdir /usr/java

3. 下载 jdk-8u131-linux-x64.rpm

wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/jdk-8u131-linux-x64.rpm

4. 赋予所用用户权限

sudo chmod 777 jdk-8u131-linux-x64.rpm

• （注：第一个 7 为 读写，第二个 7 为 用户组，第三个 7 为 其他人）

5. 安装： sudo rpm -ivh jdk-8u131-linux-x64.rpm

6. JDK 配置环境变量

• sudo vim /etc/profile
• 在最下方添加

export JAVA_HOME=/usr/java/jdk1.8.0_131
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

• 使配置生效：source /etc/profile

三、Tomcat 安装

1. 下载： wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.31/bin/apache-tomcat-8.5.31.tar.gz
2. 解压缩: sudo tar -zxvf apache-tomcat-8.5.31.tar.gz
3. 重命名：mv apache-tomcat-8.5.31.tar.gz tomcat
4. 移动 tomcat 文件夹至 /usr/local/tomcat：mv /root/tomcat /usr/local/tomcat
5. 给 tomcat 的bin目录授权 chmod -R 777 /usr/local/tomca/
6. 配置环境变量

• sudo vim /etc/profile

export CATALINA_HOME=/usr/local/tomcat
alias tomcat_start='sudo sh /usr/local/tomcat/bin/startup.sh'
alias tomcat_stop='sudo sh /usr/local/tomcat/bin/shutdown.sh'

• 保存，退出，source /etc/profile，使其生效
• tomcat_start 启动； tomcat_stop 停止

7. 配置 UTF-8 字符集

• 进入 tomcat 安装的 conf 文件夹，编辑 server.xml vim ${CATALINA_HOME}/conf/server.xml
• 找到配置 8080 默认端口的位置，在 xml 节点末尾添加 URIEncoding="UTF-8"
• 保存退出

四、Maven 配置

1. 下载 ：curl -O https://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.5.3/binaries/apache-maven-3.5.3-bin.tar.gz
2. 解压： tar -zxvf apache-maven-3.5.3-bin.tar.gz
3. 移动：mv apache-maven-3.5.3 /usr/local/maven/
4. 配置变量：

# Maven
export MAVEN_HOME=/usr/local/maven
export PATH=$PATH:$JAVA_HOME/bin:$MAVEN_HOME/bin

5. 生效：source /etc/profile
6. 检测： mvn -v

五、IDEA 安装

1. 下载 ：curl -O https://download.jetbrains.8686c.com/idea/ideaIU-2018.1.3.tar.gz
2. 解压： tar -zxvf ideaIU-2018.1.3.tar.gz
3. 移动：sudo mv idea-IU-181.4892.42 /usr/local/idea/
4. 下载破解文件：https://pan.baidu.com/s/1UOPd_6ks7T1ef2xzNA0CqQ
5. 移动破解文件：mv idea_key.jar /usr/local/idea/bin/idea_key.jar
6. 在bin下的idea.vmoptions 和 idea64.vmoptions文件内容最后添加-javaagent:/usr/local/idea/bin/idea_key.jar
7. sudo /etx/profile

# IDEA
export IDEA_HOME=/usr/local/idea
export PATH=$PATH:$IDEA_HOME/bin
alias idea_start='sudo sh /usr/local/idea/bin/idea.sh'

source /etc/profile

8. 启动IDEA：idea_start
9. 输入 Activation Code

BIG3CLIK6F-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-iygsIMXTVeSyYkUxAqpHmymrgwN5InkOfeRhhPIPa88FO9FRuZosIBTY18tflChACznk3qferT7iMGKm7pumDTR4FbVVlK/3n1ER0eMKu2NcaXb7m10xT6kLW1Xb3LtuZEnuis5pYuEwT1zR7GskeNWdYZ0dAJpNDLFrqPyAPo5s1KLDHKpw+VfVd4uf7RMjOIzuJhAAYAG+amyivQt61I9aYiwpHQvUphvTwi0X0qL/oDJHAQbIv4Qwscyo4aYZJBKutYioZH9rgOP6Yw/sCltpoPWlJtDOcw/iEWYiCVG1pH9AWjCYXZ9AbbEBOWV71IQr5VWrsqFZ7cg7hLEJ3A==-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

成功启动 IDEA