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最近安装了mac osx lion系统，然后安装了mysql5.5.16版本的数据库进行开发，但是大家都知道，mysql的默认编码是latin1，如果存储中文的话就会出现乱码，然后就狂google这个问题，但是一直都没有解决，网上大部分的回答都是如下：
1.拷贝/usr/local/mysql/support-files下的任意一个*.cnf文件到/etc/my.cnf；
2.在my.cnf文件的［mysqld］和［client］后面添加一句default-character-set=utf8（或者是default_character_set=utf8）；
3.保存退出；
4.重新启动mysql服务器就可以。
可是我试过好多次，这样修改之后，mysql服务根本就启动不了。
偶然的机会，我发现了一个关于在linux下配置mysql的编码问题的方法，抱着试试看的态度，我进行了修改，发现真的可以用，因此发这篇博文希望装mac的朋友不用再走弯路了。配置方法如下：
1.拷贝/usr/local/mysql/support-files下的任意一个*.cnf文件到/etc/my.cnf；
2.在my.cnf文件的［client］后面添加一句default-character-set=utf8（ 不是default_character_set=utf8[i][/i]，这个配置我没有试过，不知道能不能成功），关键在这里的配置，在［mysqld］后面添加如下三句：
default-storage-engine=INNODB
character-set-server=utf8
collation-server=utf8_general_ci；
3.保存退出；
4.重新启动mysql服务器就可以。
然后再就入mysql数据库查看编码发现改成了utf8了。
下面是我重启mysql服务器进入mysql数据库查出来的结果：
Java代码
Welcome to the MySQL monitor. Commands end with ; or /g.
Your MySQL connection id is 520
Server version: 5.5.16 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '/h' for help. Type '/c' to clear the current input statement.
mysql> show variables like '%char%';
-------------------------- --------------------------------------------------------
| Variable_name | Value |
-------------------------- --------------------------------------------------------
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
|字符集结果 | utf8 |
|字符集服务器 | utf8 |
|字符集系统 | utf8 |
|字符集_目录 | /usr/local/mysql-5.5.16-osx10.6-x86_64/share/charsets/ | /usr/local/mysql-5.5.16-osx10.6-x86_64/share/charsets/ |
-------------------------------------- ------------------ --------------------------------------
集合中的 8 行 (0.00秒)
欢迎使用 MySQL 监视器。 命令以 ; 结尾或 /g.
您的 MySQL 连接 ID 为 520
服务器版本：5.5.16 MySQL 社区服务器 (GPL)
版权所有 (c) 2000 年、2011 年，Oracle 和/或其附属公司。保留所有权利。
Oracle 是 Oracle Corporation 和/或其
附属公司的注册商标。其他名称可能是其各自
所有者的商标。
输入“帮助”；或“/h”寻求帮助。输入 '/c' 清除当前输入语句。
mysql>显示类似 '%char%';
的变量 -------------------------- --------- -----------------------------------------------------------
|变量名称 |值 |
-------------------------------------- ---------------- ----------------------------------------------------
|字符集客户端 | utf8 |
|字符集连接 | utf8 |
|字符集数据库utf8 |
|字符集文件系统 |二进制 |
|字符集结果 | utf8 |
|字符集服务器 | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/local/mysql-5.5.16-osx10.6-x86_64/share/charsets/ |
-------------------------- --------------------------------------------------------
8 rows in set (0.00 sec)
至此，这个困扰多日的问题终于解决了。
附修改好的my.cnf文件内容，不知道为什么附件我上传不了，就把代码贴出来吧：
Java代码
# Example MySQL config file for small systems.
#
# This is for a system with little memory (<= 64M) where MySQL is only used
# from time to time and it's important that the mysqld daemon
# doesn't use much resources.
#
# MySQL programs look for option files in a set of
# locations which depend on the deployment platform.
# You can copy this option file to one of those
# locations. For information about these locations, see:
# http://dev.mysql.com/doc/mysql/en/option-files.html
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.
# The following options will be passed to all MySQL clients
[client]
default-character-set=utf8
#password = your_password
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
default-storage-engine=INNODB
character-set-server=utf8
collation-server=utf8_general_ci
port = 3306
socket = /tmp/mysql.sock
skip-external-locking
key_buffer_size = 16K
max_allowed_packet = 1M
table_open_cache = 4
sort_buffer_size = 64K
read_buffer_size = 256K
read_rnd_buffer_size = 256K
net_buffer_length = 2K
thread_stack = 128K
# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (using the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking
server-id = 1
# Uncomment the following if you want to log updates
#log-bin=mysql-bin
# binary logging format - mixed recommended
#binlog_format=mixed
# Causes updates to non-transactional engines using statement format to be
# written directly to binary log. Before using this option make sure that
# there are no dependencies between transactional and non-transactional
# tables such as in the statement INSERT INTO t_myisam SELECT * FROM
# t_innodb; otherwise, slaves may perge from the master.
#binlog_direct_non_transactional_updates=TRUE
# Uncomment the following if you are using InnoDB tables
#innodb_data_home_dir = /usr/local/mysql/data
#innodb_data_file_path = ibdata1:10M:autoextend
#innodb_log_group_home_dir = /usr/local/mysql/data
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
#innodb_buffer_pool_size = 16M
#innodb_additional_mem_pool_size = 2M
# 将 .._log_file_size 设置为缓冲池大小的 25%
#innodb_log_file_size = 5M
#innodb_log_buffer_size = 8M
#innodb_flush_log_at_trx_commit = 1
#innodb_lock_wait_timeout = 50
[mysqldump]
快
max_allowed_packet = 16M
[mysql ]
no-auto-rehash
# 如果您不熟悉 SQL，请删除下一个注释字符
#safe-updates
[myisamchk]
key_buffer_size = 8M
sort_buffer_size = 8M
[mysqlhotcopy]
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作者：zhyl2010
bitsCN.com
