轉自：http://blog.csdn.net/lu8000/article/details/8928474

亂碼問題： 

資料庫是MySql，儲存的是中文的內容用MySql Command Line Client 檢視是亂碼，但是用MySql Administrator檢視卻顯示正確

先看資料庫的相關編碼

1. mysql> show variables like'character_set_%';  
2. +--------------------------+---------------------------------------------------------+
3. | Variable_name            | Value                                                   |  
4. +--------------------------+---------------------------------------------------------+
5. | character_set_client     | utf8                                                    |  
6. | character_set_connection | utf8                                                    |  
7. | character_set_database   | utf8                                                    |  
8. | character_set_filesystem | binary                                                  |  
9. | character_set_results    | utf8                                                    |  
10. | character_set_server     | utf8                                                    |  
11. | character_set_system     | utf8                                                    |  
12. | character_sets_dir       | C:\Program Files\MySQL\MySQL Server 5.5\share\charsets\ |  
13. +--------------------------+---------------------------------------------------------+

1. mysql> select * from student;  
2. +----+------+------+
3. | id | name | age  |  
4. +----+------+------+
5. |  1 | 涓?  |    4 |  
6. +----+------+------+
7. 1 row inset (0.00 sec)  

character_set_client
character_set_connection
character_set_results 

而這三項是可以通過set names utf8|set names gbk來可以設定的！另外也說明當前連線的客戶端的編碼情況沒有影響到資料庫伺服器本身的編碼情況。

1. mysql> set names gbk;  
2. Query OK, 0 rows affected (0.00 sec)  
3. mysql> show variables like'character_set_%';  
4. +--------------------------+---------------------------------------------------------+
5. | Variable_name            | Value                                                   |  
6. +--------------------------+---------------------------------------------------------+
7. | character_set_client     | gbk                                                     |  
8. | character_set_connection | gbk                                                     |  
9. | character_set_database   | utf8                                                    |  
10. | character_set_filesystem | binary                                                  |  
11. | character_set_results    | gbk                                                     |  
12. | character_set_server     | utf8                                                    |  
13. | character_set_system     | utf8                                                    |  
14. | character_sets_dir       | C:\Program Files\MySQL\MySQL Server 5.5\share\charsets\ |  
15. +--------------------------+---------------------------------------------------------+
16. 8 rowsinset (0.00 sec)  
17. mysql> select * from student;  
18. +----+------+------+
19. | id | name | age  |  
20. +----+------+------+
21. |  1 | 上     |    4 |  
22. +----+------+------+