####################配置文件開始###################   # 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  # D:/Program Files/mysql-5.7.11-winx64/mysql-5.7.11-winx64  basedir ="D:/Program Files/mysql-5.7.11-winx64/mysql-5.7.11-winx64/"   datadir ="D:/Program Files/mysql-5.7.11-winx64/mysql-5.7.11-winx64/data/"   tmpdir ="D:/Program Files/mysql-5.7.11-winx64/mysql-5.7.11-winx64/data/"   socket ="D:/Program Files/mysql-5.7.11-winx64/mysql-5.7.11-winx64/data/mysql.sock"   log-error="D:/Program Files/mysql-5.7.11-winx64/mysql-5.7.11-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="D:/Program Files/mysql-5.7.11-winx64/mysql-5.7.11-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    ####################配置文件結束################### 

net start mysql 

mysql -u root -p 

use mysql

update user set authentication_string=password("123456") where user="root"; 

flush privileges;