数据库忘记装了,然后今天才装上。刚开始有点蒙蔽,进入mysql官网一堆英文,小声逼逼没有学号英语的我。废话不都说,直接上图
1、输入网址 https://www.mysql.com/downloads/
2、点击Mysql Community Server
3、进去之后是最新版本,点击图上按钮就可以下载之前版本
4、下载zip安装包然后就可以了
5、记得进行配置,找到你安装mysql的文件夹中
1)在bin同级目录创建新建my-default.ini文件。我的ini文件是这样的:
[mysqld] #设置3306端 port = 3306 # 设置mysql的安装目录 basedir=D:devUtilsJavamysql-5.7.28-winx64 # 设置mysql数据库的数据的存放目录 datadir=D:devUtilsJavamysql-5.7.28-winx64data # 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 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES [mysql] # 设置mysql客户端默认字符集 default-character-set=utf8
2)bin目录下创建my.ini文件
# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html # *** DO NOT EDIT THIS FILE. It‘s a template which will be copied to the # *** default location during install, and will be replaced if you # *** upgrade to a newer version of MySQL. [mysqld] # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # These are commonly set, remove the # and set as required. basedir = D:devUtilsJavamysql-5.7.28-winx64 datadir = D:devUtilsJavamysql-5.7.28-winx64data port = 3306 # server_id = ..... # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
6、运行mysql
以管理员身份运行cmd,win10菜单栏里找到
依次执行命令:mysqld --install
mysqld --initialize
net startt mysql
7、登录mysql
mysql -uroot -p
刚开始时,你随机输入会提示错误,不要慌。去我们刚才配置的data目录下找到一个.err的文件
输入密码后就成功登录了。
8、修改mysql密码
1)如果你此时进入到mysql中,使用exit退出
2)net stop mysql 停止mysql服务
3)mysqld --skip-grant-tables 使用无验证方式启动mysql服务
4)使用管理员权限打开新的cmd命令行窗口,输入mysql 你就可以无密码进入到mysql中
5)use mysql
6)UPDATE user SET authentication_string = PASSWORD(‘新密码‘) WHERE user = ‘root‘;
再次登录使用设置的新密码就可以了!
希望能够帮到大家!!!