其实解决这个问题就是要保证整个数据插入过程中字符编码要一致。要有三个方面注意的，
第一个是msyl数据库，就是保证mysql的数据库以及表多要保证编码是一致的比如都是UTF-8，
第二个是，eclipse这边也要保证项目，工作空间和java文件的编码格式也是UTF-8，
第三个是，就是配置文件里面jdbc的url的（jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf8）后面也要设置编码（这个问题以前没遇到，这次出现乱码最后才发现是他的缘故）
对于大家都说要改什么my.ini的配置文件，这个我没有去修改，用的是Mysql的默认文本,如下图所示
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
# *** DO NOT EDIT THIS FILE. It‘s a template which will be copied to the
# *** default location during install, and will be replaced if you
# *** upgrade to a newer version of MySQL.
[mysqld]
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
# These are commonly set, remove the # and set as required.
# basedir = .....
# datadir = .....
# port = .....
# server_id = .....
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
原文：http://www.cnblogs.com/wangpengtao/p/5193346.html