####################配置文件开始###################

 # 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.

 [client]

 default-character-set=utf8

 

 [mysqld]

 port=3306

 basedir ="C:\job\mysql-5.7.12-winx64/"

 datadir ="C:\job\mysql-5.7.12-winx64/data/"

 tmpdir ="C:\job\mysql-5.7.12-winx64/data/"

 socket ="C:\job\mysql-5.7.12-winx64/data/mysql.sock"

 log-error="C:\job\mysql-5.7.12-winx64/data/mysql_error.log"

 

 #server_id = 2

 #skip-locking

 

 max_connections=100

 table_open_cache=256

 query_cache_size=1M

 

 tmp_table_size=32M

 thread_cache_size=8

 

 innodb_data_home_dir="C:\job\mysql-5.7.12-winx64/data/"

 innodb_flush_log_at_trx_commit =1

 innodb_log_buffer_size=128M

 innodb_buffer_pool_size=128M

 innodb_log_file_size=10M

 innodb_thread_concurrency=16

 innodb-autoextend-increment=1000

 join_buffer_size = 128M

 sort_buffer_size = 32M

 read_rnd_buffer_size = 32M

 max_allowed_packet = 32M

 explicit_defaults_for_timestamp=true

 sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

 skip-grant-tables

 #sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

####################配置文件结束###################

mysql –uroot

mysql>show databases;

mysql>use mysql;
mysql> update mysql.user set authentication_string=password('12345') where user='root' and Host = 'localhost';

mysql> alter user 'root'@'localhost' identified by '12345';

mysql> FLUSH PRIVILEGES;

mysql> QUIT