Ubuntu18.04-linux系统安装JDK与Mysql的方法

平台部署

一、安装JDK

step1.下载OracleJDKstep2. 解压step3. 加入环境变量

具体操作如下：

在环境变量末尾加入如下内容:

保存后重新加载环境变量，使生效：

二、安装MySQL

step1. 安装MySQL并配置step2. 创建数据库与表

由于在安装Ubuntu系统时，本人选择了安装lamp服务，所以MySQL已安装完成，仅需设置即可启用。

测试是否安装：

lemon@ubuntu:~$ mysql #输入mysql，如出现以下提示，说明已安装mysqlERROR 1045 (28000): Access denied for user 'lemon'@'localhost' (using password: NO)

如未安装：

如已安装：

lemon@ubuntu:~$ sudo mysql_secure_installation

两者都会进入MySQL设置过程，具体设置内容如下：

#1VALIDATE PASSWORD PLUGIN can be used to test passwords...Press y|Y for Yes, any other key for No: N(不启用弱密码检查）

#2Please set the password for root here...New password: (设置root密码)Re-enter new password: (重复输入)

#3By DEFault, a MySQL installation has an anonymous user,allowing anyone to log into MySQL without having to havea user account CREATEd for them...Remove anonymous users? (Press y|Y for Yes, any other key for No) : Y(不启用匿名用户)

#4Normally, root should only be allowed to connect from'localhost'. This ensures that someone cannot guess atthe root password from the Network...Disallow root login remotely? (Press y|Y for Yes, any other key for No) : Y (不允许root远程登陆)

#5By default, MySQL comes with a alt="Ubuntu18.04 linux系统安装JDK与Mysql的方法" src="/uploads/img/202305/9efe42d0065abb4470b83ca2b4534476.jpg">

这样就Ok了