mysql官网下载地址:https://dev.mysql.com/downloads/mysql/
首先安装包解压后,没有网上教程里面提到的data文件夹和my-default.ini
配置环境变量很简单:
新增系统环境变量: 键名:MYSQL_HOME 值为:E:mysql-5.7.21-winx64 在path中添加%MYSQL_HOME%in
主要注意以下几点:
- my-default.ini文件存不存在不重要,关键需要自己在根目录下新建一个文本文件,改名为my.ini,具体内容如下:
[mysql] # 设置mysql客户端默认字符集 default-character-set=utf8 [mysqld] #设置3306端口 port = 3306 # 设置mysql的安装目录 basedir=E:\mysql-5.7.21-winx64 # 允许最大连接数 max_connections=200 # 服务端使用的字符集默认为8比特编码的latin1字符集 character-set-server=utf8 # 创建新表时将使用的默认存储引擎 default-storage-engine=INNODB
可以直接复制粘贴,主要修改下basedir后的路径,注意路径中为\而非
-
如果出现
MySQL 服务正在启动。 MySQL 服务无法启动。
为了避免这个错误,需要使用命令生成data文件夹,按如下步骤安装:
-
1) 进入dos的命令行,一定要用administrator进入。2)进入MySQL的bin目录,输入mysqld –install可以安装MySQL。3)
D:>cd D:Servicemysql57in D:Servicemysql57in>mysqld -install Service successfully installed.
4)输入以下命令,可以初始化MySQL数据库,初始化了之后,会打印出MySQL的默认生成的密码,下面标红了的就是默认生成的密码。
D:Servicemysql57in>mysqld --initialize --user=root --console 2017-12-20T08:13:45.264865Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details). 2017-12-20T08:13:45.854579Z 0 [Warning] InnoDB: New log files created, LSN=45790 2017-12-20T08:13:45.998772Z 0 [Warning] InnoDB: Creating foreign key constraint system tables. 2017-12-20T08:13:46.098118Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 9755c3ea-a6f1-11e5-81a3-74d02b122fb3. 2017-12-20T08:13:46.121617Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened. 2017-12-20T08:13:46.135153Z 1 [Note] A temporary password is generated for root@localhost: g!gRw!d%M0Sj
初始化了以后,可以看到MySQL目录下,多了data目录5)D:Servicemysql57in>net start mysql
MySQL 服务正在启动。 MySQL 服务已经启动成功。
6)使用默认生成的密码,进入mysql。7)
D:Servicemysql57in>mysql -u root -p Enter password: ************ Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 4 Server version: 5.7.10 Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql>
7)进入了mysql就可以修改默认密码了(我把默认密码修改成了root)
mysql> set password = password('root') ;
这个时候,Windows下的MySQL环境就已经安装好了。