java添加中文数据到mysql中,
包含中文就乱码 最初是想应该是由于字符编码不一致,所以查看数据库的属性跟表的属性 查看表的字符集也是utf8,不是的改成自己想要设置的,我这里以utf8为例
所以查看mysql的编码
#show variables like 'character%'
发现有几个编码格式不是utf8的, 修改
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 C:\Program Files\MySQL\MySQL Server 5.5\share\charsets\
将里面的编码格式改成
SET character_set_client='utf8';
SET character_set_connection='utf8';
SET character_set_results='utf8'; 哪些不是就改哪,
也可以直接修改C:\Program Files\MySQL\MySQL Server 5.5\my.ini文
将里面的default-character-set改成utf8,注意是utf8,而不是utf-8,否则重启服务好像会报错1667错误,重启服务,再次查询编码,
#show variables like 'character%'
显示的
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 C:\Program Files\MySQL\MySQL Server 5.5\share\charsets\
全是utf8了,当我再次往mysql加中文,这次不是乱码,程序中报错了,很纠结的事,
Incorrect string value: '\xE8\xBF\x87\xE5\x88\x86...' for column 'username' at row 1
对此不熟悉碰了壁,但还是找到了答案,mysql中还能对表字段进行编码设置,
show full columns from tablename,使用此命令可以查看表字段的字符编码
如果你的Collation列中不是utf8,那么请修改
alter table 表 change 字段 字段 varchar(100) character set utf8 collate utf8_general_ci not null default '';
下面是我对这张表的设置,
alter table user change username username varchar(100) character set utf8 collate utf8_general_ci not null default '';
alter table user change password password varchar(100) character set utf8 collate utf8_general_ci not null default '';
alter table user change nickname nickname varchar(100) character set utf8 collate utf8_general_ci not null default '';
这是我连接mysql的方式
conn = DriverManager
.getConnection(
"jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8",
"username", "password");
添加中文成功了