近一段时间学习Django,在进行与MySQL数据联合使用的插入数据的时候遇到下边的问题:
  /usr/local/lib/python2.7/dist-packages/Django-1.11.dev20170117002028-py2.7.egg/django/db/backends/mysql/base.py:109: Warning: Incorrect string value: 'xE6x88x90xE5x8Ax9F...' for column 'json' at row 1
  return self.cursor.execute(query, args)
  [07/Feb/2017 12:15:21] "GET /index/ HTTP/1.1" 200 250
  中文无法插入MySQL数据库~!~!
  查看数据库编码
  mysql> show create database bangjob;
  +----------+--------------------------------------------------------------------+
  | Database | Create Database                                                    |
  +----------+--------------------------------------------------------------------+
  | bangjob  | CREATE DATABASE `bangjob` /*!40100 DEFAULT CHARACTER SET latin1 */ |
  +----------+--------------------------------------------------------------------+
  1 row in set (0.00 sec)
  mysql> show variables like'%char%';
  +--------------------------+----------------------------+
  | Variable_name            | Value                      |
  +--------------------------+----------------------------+
  | character_set_client     | utf8                       |
  | character_set_connection | utf8                       |
  | character_set_database   | latin1                     |
  | character_set_filesystem | binary                     |
  | character_set_results    | utf8                       |
  | character_set_server     | latin1                     |
  | character_set_system     | utf8                       |
  | character_sets_dir       | /usr/share/mysql/charsets/ |
  +--------------------------+----------------------------+
  8 rows in set (0.00 sec)
  修改数据库编码
  mysql> set character_set_database=utf8;
  Query OK, 0 rows affected (0.00 sec)
  mysql> set character_set_server=utf8;
  Query OK, 0 rows affected (0.00 sec)
  查看修改后的结果
  mysql> show variables like'%char%';
  +--------------------------+----------------------------+
  | Variable_name            | Value                      |
  +--------------------------+----------------------------+
  | character_set_client     | utf8                       |
  | character_set_connection | utf8                       |
  | character_set_database   | utf8                       |
  | character_set_filesystem | binary                     |
  | character_set_results    | utf8                       |
  | character_set_server     | utf8                       |
  | character_set_system     | utf8                       |
  | character_sets_dir       | /usr/share/mysql/charsets/ |
  +--------------------------+----------------------------+
  8 rows in set (0.00 sec)
  这时候继续插入没有任何问题了。
  如果真的是这样简单好了,因为这样的修改作者在重启MySQL的后设置失效!!!
  继续寻找其它方法
  sudo gedit /etc/mysql/my.cnf
  在my.cnf文件的对应节点添加一下信息:
  [client]
  default-character-set=utf8
  [mysqld]
  default-character-set=utf8
  [mysql]
  default-character-set=utf8
  然后重启MySQL:
  /etc/init.d/mysql start
  如果能重启那么再次查看数据库编码:
  mysql> show variables like "%char%";
  +--------------------------+----------------------------+
  | Variable_name            | Value                      |
  +--------------------------+----------------------------+
  | character_set_client     | utf8                       |
  | character_set_connection | utf8                       |
  | character_set_database   | utf8                       |
  | character_set_filesystem | binary                     |
  | character_set_results    | utf8                       |
  | character_set_server     | utf8                       |
  | character_set_system     | utf8                       |
  | character_sets_dir       | /usr/share/mysql/charsets/ |
  +--------------------------+----------------------------+
  8 rows in set (0.01 sec)
  如果真的时这样好了,事情的发生总是不像想象的那么简单:
  在重启MySQL服务的时候发现一直处于等待状态(PS:猜测发生了死锁什么的),这个时候执行mysql -u root -p则会抛出异常ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)。
  我是想修改一下编码而已,为什么这么苦->->->->->!!!
  解决这个问题的时候试过好多方法(重启,恢复)。。。。。
  sudo /etc/init.d/mysql status
  查看mysql的状态:mysql respawn/post-start, (post-start) process 55665
  这些方式不能解决问题,还是从日志开始吧…
  找到日至文件 /var/log/mysql/error.log

  继续找ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)的解决办法。
  答案:
  [ mysqld ] 下的 default-character-set=utf8’ 改成
  character_set_server=utf8
  好了,终于可以重启MySQL了,并且重启后设置的编码依旧生效(当然之前创建的数据库需要重新创建T_T)。