一、JDK1.8 环境搭建 1、上传文件解压 [root@localhost mysoft]# tar -zxvf jdk-8u161-linux-x64.tar.gz [root@localhost mysoft]# pwd /usr/local/mysoft [root@localhost mysoft]# mv jdk1.8.0_161 jdk1.8 2、检查环境，已经安装删除 [root@localhost mysoft]# ps -aux|grep java [root@localhost mysoft]# rpm -e --nodeps rpm -qa | grep java 3、配置环境变量 [root@localhost /]# vim /etc/profile # 文件末尾追加 下面内容 shit+g 跳到文件末尾 # JAVA_HOME export JAVA_HOME=http://www.likecs.com/usr/local/mysoft/jdk1.8 export PATH=$PATH:$JAVA_HOME/bin 4、检测安装成功 [root@localhost /]# java -version openjdk version "1.8.0_161" OpenJDK Runtime Environment (build 1.8.0_161-b14) OpenJDK 64-Bit Server VM (build 25.161-b14, mixed mode) 二、TOMCAT8 安装 1、上传安装包 [root@localhost mysoft]# tar -zxvf apache-tomcat-8.5.40.tar.gz [root@localhost mysoft]# mv apache-tomcat-8.5.40 tomcat8.5 2、启动服务 [root@localhost bin]# pwd /usr/local/mysoft/tomcat8.5/bin [root@localhost bin]# ./startup.sh Tomcat started. 3、访问测试 :8080/ OK了 三、MySQL5.7 安装 1、卸载原系统中的mariadb [root@localhost /]# rpm -qa|grep mariadb mariadb-libs-5.5.56-2.el7.x86_64 [root@localhost /]# rpm -e --nodeps mariadb-libs [root@localhost /]# rpm -qa|grep mariadb 2、获取官方地址
地址：https://dev.mysql.com/downloads/repo/yum/ https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm 3、Yum源安装 wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm [root@localhost /]# rpm -ivh mysql80-community-release-el7-3.noarch.rpm [root@localhost /]# yum repolist all|grep mysql mysql57-community/x86_64 MySQL 5.7 Community Server disabled mysql80-community/x86_64 MySQL 8.0 Community Server enabled: 113 mysql80-community-source MySQL 8.0 Community Server - disabled ……..yum源中默认启用的安装包版本为MySQL8.0，这里切换为5.7，执行以下命令；
[root@localhost /]# yum-config-manager --disable mysql80-community [root@localhost /]# yum-config-manager --enable mysql57-community 4、MySQL 安装启动 [root@localhost /]# yum install mysql-community-server # 需要安装依赖提示，选择y Total download size: 192 M Installed size: 865 M Is this ok [y/d/N]: y查看版本
[root@localhost /]# mysql -V mysql Ver 14.14 Distrib 5.7.26, for Linux (x86_64) using EditLine wrapper启动查看状态
[root@localhost /]# systemctl start mysqld.service [root@localhost /]# systemctl status mysqld.service mysqld.service - MySQL Server Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled) Active: active (running) since Tue 2019-05-14 17:26:32 CST; 31s ago为root账户生成临时密码
[root@localhost /]# grep 'temporary password' /var/log/mysqld.log 2019-05-14T09:26:28.657250Z 1 [Note] A temporary password is generated for root@localhost: !Bh(GT.od9L;设置root用户密码
# 这里防止出现密码策略，强度不够的问题 mysql> set global validate_password_policy=LOW; mysql> alter user 'root'@'localhost' identified by 'husky123456';这样，Java的基础环境就搭建完毕了！
四、源代码地址 GitHub地址：知了一笑 https://github.com/cicadasmile 码云地址：知了一笑 https://gitee.com/cicadasmile