在“连接属性”的设置中，高级-“使用mysql字符集”去掉钩，并且将编码改为10008-GB2312.
然后进入navicat的控制台后，show variables like 'char%';命令后如下:
+--------------------------+---------------------------------------+
| Variable_name | Value |
+--------------------------+---------------------------------------+
| character_set_client | latin1 |
| character_set_connection | latin1 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | latin1 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | D:\mysql-5.1.32-win32\share\charsets\ |
此时我们需要在控制台运行 set names 'gbk'命令，运行后再次show variables like 'char%';命令查看结果如下：
+--------------------------+---------------------------------------+
| Variable_name | Value |
+--------------------------+---------------------------------------+
| character_set_client | gbk |
| character_set_connection | gbk |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | gbk |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | D:\mysql-5.1.32-win32\share\charsets\ |
客户端连接环境设置算是完成了。接着中文数据该怎么插还是怎么插，不会再有乱码出现。
至于从.sql.txt等文本批量导入数据，则需要将相应的文件转化为gbk格式保存再导入，否则导入后会乱码