MySQL5中文亂碼解決(Z)

文章出自：http://toyota2006.javaeye.com/blog/264675

 

MySql5中文亂碼的解決方法在使用MYSQL時，插入中文字符，經常會出現亂碼，中文全被用?代替。出現這種情況的原因，多是字符集不匹配造成的。
在MYSQL中，如果使用缺省的字符集，在建庫、建表時，默認使用的是latin1字符集，爲ISO 8859-1西歐字符集。插入中文字符時，與之不匹配，就會出現亂碼。

要解決此問題，就必須手動將數據庫Server和Client的字符編碼改爲gb2312。配置方法如下：
打開MYSQL安裝目錄下的my.ini文件，找到如下段落：

# CLIENT SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by MySQL client applications.
# Note that only client applications shipped by MySQL are guaranteed
# to read this section. If you want your own MySQL client program to
# honor these values, you need to specify it as an option during the
# MySQL client library initialization.
#
[client]

port=3306

[mysql]

default-character-set=latin1


# SERVER SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by the MySQL Server. Make sure that
# you have installed the server correctly (see above) so it reads this
# file.
#
[mysqld]

# The TCP/IP Port the MySQL Server will listen on
port=3306

#Path to installation directory. All paths are usually resolved relative to this.
basedir="D:/MySQL/MySQL Server 5.0/"

#Path to the database root
datadir="D:/MySQL/MySQL Server 5.0/Data/"

# The default character set that will be used when a new schema or table is
# created and no character set is defined
default-character-set=latin1

將其中的default-character-set=latin1改爲default-character-set=gb2312,然後重啓MYSQL,以前建立的數據庫要重建.附Mysql基本命令

運行MySQL Command Line Client：
輸入show variables like 'character_set_%';可以查看數據庫的字符編碼如下：

mysql> show variables like 'character_set_%';
+--------------------------+-----------------------------------------+
| Variable_name             | Value                                    |
+--------------------------+-----------------------------------------+
| character_set_client      | gb2312                                   |
| character_set_connection | gb2312                                   |
| character_set_database    | gb2312                                   |
| character_set_filesystem | binary                                   |
| character_set_results     | gb2312                                   |
| character_set_server      | gb2312                                   |
| character_set_system      | utf8                                     |
| character_sets_dir        | D:\MySQL\MySQL Server 5.0\share\charsets|
+--------------------------+-----------------------------------------+

然後，在程序中將連接數據庫的URL改爲jdbc:mysql://localhost:3306/databasename?useUnicode=true&characterEncoding=gb2312就可以了！

當然要支持國際化最好把以上所有gb2312換成utf8（注意不是utf-8，除了在程序中將連接數據庫的URL改爲jdbc:mysql://localhost:3306/databasename?useUnicode=true&characterEncoding=utf-8）

 

小灰機：在安裝MYSQL把編碼格式直接設置成UTF-8可直接避免這一問題。