在前端页面向数据库中插入带中文字符的数据，到数据库时中文都变成了"？",其中jsp页面已经是设为utf-8编码的，建数据库时选择的编码也是utf-8;

1.解决的办法是在连接数据库时url指定编码：localhost:3306/test?useUnicode=true&characterEncoding=UTF-8";

2.修改配置文件my.ini，如果没有my.ini可复制my-default.ini 文件然后修改里面的配置为如下：

我的my.ini文件如下：

# 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 = .....

character_set_server=utf8

[client]    

#设置客户端字符集    

default-character-set=utf8  

loose-default-character-set = utf8

# 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