Question

Mysql输入密码后闪退，具体错误如下（解决我的问题后会大幅度加金币的，拜托拜托）

150925 20:47:39 [Note] C:\AppServ\MySQL\bin\mysqld-nt: ready for connections.
Version: '5.0.51b-community-nt-log' socket: '' port: 3306 MySQL Community Edition (GPL)
150925 21:49:20 [Note] C:\AppServ\MySQL\bin\mysqld-nt: ready for connections.
Version: '5.0.51b-community-nt-log' socket: '' port: 3306 MySQL Community Edition (GPL)
150925 22:36:18 [Note] C:\AppServ\MySQL\bin\mysqld-nt: ready for connections.
Version: '5.0.51b-community-nt-log' socket: '' port: 3306 MySQL Community Edition (GPL)

Answer 1

重新安装了mysql导致了一系列的问题，比如启动不了服务，提示：1045 access denied for user 'root'@'localhost' using password yes等等。
解决方法：
1. 删除mysql程序，利用sc delete mysql删除原来的服务
2. 到WINDOWS的命令行了（‘DOS’ 下），切换到你的MySQL bin目录下。 比如我的是 C:\Program Files\MySQL\MySQL Server 5.1\bin
然后敲下面的粗体的命令。注意你的my.ini位置。

C:\Program Files\MySQL\MySQL Server 5.1\bin>mysqld --defaults-file="C:\Program
Files\MySQL\MySQL Server 5.1\my.ini" --console --skip-grant-tables
090515 22:06:09 [Warning] The syntax '--log' is deprecated and will be removed i
n MySQL 7.0. Please use '--general_log'/'--general_log_file' instead.
090515 22:06:09 [Warning] The syntax '--log_slow_queries' is deprecated and will
be removed in MySQL 7.0. Please use '--slow_query_log'/'--slow_query_log_file'
instead.
090515 22:06:09 [Warning] The syntax '--log' is deprecated and will be removed i
n MySQL 7.0. Please use '--general_log'/'--general_log_file' instead.
090515 22:06:09 [Warning] The syntax '--log_slow_queries' is deprecated and will
be removed in MySQL 7.0. Please use '--slow_query_log'/'--slow_query_log_file'
instead.
090515 22:06:09 [ERROR] The update log is no longer supported by MySQL in versio
n 5.0 and above. It is replaced by the binary log. Now starting MySQL with --log
-bin='' instead.
090515 22:06:09 InnoDB: Started; log sequence number 0 324221
090515 22:06:09 [Note] mysqld: ready for connections.
Version: '5.1.33-community-log' socket: '' port: 3306 MySQL Community Server
(GPL)

看到这个结果就说明MySQL已经起来了。
再开一个DOS窗口，同样切到mysql bin目录下，
C:\Program Files\MySQL\MySQL Server 5.1\bin>mysql -uroot mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.1.33-community-log MySQL Community Server (GPL)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> UPDATE user SET Password=PASSWORD(’newpassword’) where USER=’root’;
mysql> FLUSH PRIVILEGES;
mysql> quit
然后
C:\Program Files\MySQL\MySQL Server 5.1\bin>mysqladmin shutdown之后正常重启MySQL服务就行了