1、以指定編碼創建數據庫
CREATE DATABASE `ecms` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci
 
2、jdbc的url連接字符串
jdbc:mysql://localhost:3306/ecms?user=root&password=&useUnicode=true&characterEncoding=utf8&autoReconnect=true&failOverReadOnly=false

1.列出MYSQL支持的所有字符集：
SHOW CHARACTER SET;

2.當前MYSQL服務器字符集設置
SHOW VARIABLES LIKE ‘character_set_%’;

3.當前MYSQL服務器字符集校驗設置
SHOW VARIABLES LIKE ‘collation_%’;

4.顯示某數據庫字符集設置
show create database 數據庫名;

5.顯示某數據表字符集設置
show create table 表名;

6.修改數據庫字符集
alter database 數據庫名 default character set ‘utf8′;

7.修改數據表字符集
alter table 表名 default character set ‘utf8′;

8.建庫時指定字符集
create database 數據庫名 character set gbk collate gbk_chinese_ci;

9.建表時指定字符集
CREATE TABLE `mysqlcode` (
`id` TINYINT( 255 ) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY ,
`content` VARCHAR( 255 ) NOT NULL
) TYPE = MYISAM CHARACTER SET gbk COLLATE gbk_chinese_ci;