insert into book(bookName,author,publish) values(‘好‘,‘hao‘,‘hao‘);

但是在jsp中执行这个insert 语句就会出现乱码。

解决方案：在url后面加上?useUnicode=true&characterEncoding=utf-8

2、导入txt文件中的sql语句，乱码。

先是执行show variables like ‘%char%‘;

+--------------------------+---------------------------------------------------------+
| Variable_name            | Value                                                   |
+--------------------------+---------------------------------------------------------+
| character_set_client     | gbk                                                     |
| character_set_connection | gbk                                                     |
| character_set_database   | latin1                                                  |
| character_set_filesystem | binary                                                  |
| character_set_results    | gbk                                                     |
| character_set_server     | latin1                                                  |
| character_set_system     | utf8                                                    |
| character_sets_dir       | C:\Program Files\MySQL\MySQL Server 5.0\share\charsets\ |
+--------------------------+---------------------------------------------------------+
8 rows in set (0.00 sec)

在MY.INI里添加：
[mysql]

default-character-set=gb2312
[mysqld]
default-character-set=gb2312

然后重新启动MYSQL服务。

进入数据库

alter database charset = gb2312;

还要记得在导入数据库的脚本的前面写上 set names gb2312;

这样就OK了。

alter database  你的数据库名 charset = gb2312;

3、navicat表输入数据乱码

set names ‘gbk‘;