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java 连接 mysql 添加中文乱码_MySQL

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Release: 2016-05-31 08:47:17
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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 

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