問題出在你寫入的東西和資料庫的編碼對不上；Mac下如何修改資料庫的編碼格式為utf-8

1.檢視下資料庫的編碼：

 命令：show variables like '%char%';

如果和下圖不一致：

| Variable_name | Value | 
+--------------------------+----------------------------+ 
| 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 | /usr/share/mysql/charsets/ | 

利用命令快速修改；

2.關閉mysql；

進入到下面的路徑檢視support-files資料夾裡面沒有my-default.cnf或my.cnf檔案,那麼就要在/etc下新建my.cnf

　$ cd /etc

$ sudo vim my.cnf

3 進行完上步操作後會進入vim模式,此時複製(***文字)的內容貼上進去,,(不包含   ***文字 );

4 貼上成功後注意看vim的第一行"#"有沒有丟掉(本人就丟過~~哈哈~),都OK的話點esc退出編輯,

　　　　　　:wq!     --儲存後強制退出.[附幾個編輯命令:dd   刪除游標所在行; dw   刪除一個字(word); x   刪除當前字元].

(***文字):

# Example MySQL config file for medium systems. 
#  
# This is for a system with little memory (32M - 64M) where MySQL plays  
# an important part, or systems up to 128M where MySQL is used together with  
# other programs (such as a web server)  
#  
# 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]
character-set-server=utf8
init_connect='SET NAMES utf8
port = 3306  
socket = /tmp/mysql.sock  
skip-external-locking  
key_buffer_size = 16M  
max_allowed_packet = 1M  
table_open_cache = 64  
sort_buffer_size = 512K  
net_buffer_length = 8K  
read_buffer_size = 256K  
read_rnd_buffer_size = 512K  
myisam_sort_buffer_size = 8M  
character-set-server=utf8  
init_connect='SET NAMES utf8' 
# 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  
# (via the "enable-named-pipe" option) will render mysqld useless!  
#  
#skip-networking 

# Replication Master Server (default)  
# binary logging is required for replication  
log-bin=mysql-bin 

# binary logging format - mixed recommended  
binlog_format=mixed 

# required unique id between 1 and 2^32 - 1  
# defaults to 1 if master-host is not set  
# but will not function as a master if omitted  
server-id = 1 

# Replication Slave (comment out master section to use this)  
#  
# To configure this host as a replication slave, you can choose between  
# two methods :  
#  
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -  
# the syntax is:  
#  
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,  
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;  
#  
# where you replace <host>, <user>, <password> by quoted strings and  
# <port> by the master's port number (3306 by default).  
#  
# Example:  
#  
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,  
# MASTER_USER='joe', MASTER_PASSWORD='secret';  
#  
# OR  
#  
# 2) Set the variables below. However, in case you choose this method, then  
# start replication for the first time (even unsuccessfully, for example  
# if you mistyped the password in master-password and the slave fails to  
# connect), the slave will create a master.info file, and any later  
# change in this file to the variables' values below will be ignored and  
# overridden by the content of the master.info file, unless you shutdown  
# the slave server, delete master.info and restart the slaver server.  
# For that reason, you may want to leave the lines below untouched  
# (commented) and instead use CHANGE MASTER TO (see above)  
#  
# required unique id between 2 and 2^32 - 1  
# (and different from the master)  
# defaults to 2 if master-host is set  
# but will not function as a slave if omitted  
#server-id = 2  
#  
# The replication master for this slave - required  
#master-host = <hostname>  
#  
# The username the slave will use for authentication when connecting  
# to the master - required  
#master-user = <username>  
#  
# The password the slave will authenticate with when connecting to  
# the master - required  
#master-password = <password>  
#  
# The port the master is listening on.  
# optional - defaults to 3306  
#master-port = <port>  
#  
# binary logging - not required for slaves, but recommended  
#log-bin=mysql-bin 

# 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  
# Set .._log_file_size to 25 % of buffer pool size  
#innodb_log_file_size = 5M  
#innodb_log_buffer_size = 8M  
#innodb_flush_log_at_trx_commit = 1  
#innodb_lock_wait_timeout = 50 

[mysqldump]  
quick  
max_allowed_packet = 16M 

[mysql]  
no-auto-rehash  
# Remove the next comment character if you are not familiar with SQL  
#safe-updates  
default-character-set=utf8 

[myisamchk]  
key_buffer_size = 20M  
sort_buffer_size = 20M  
read_buffer = 2M  
write_buffer = 2M 

[mysqlhotcopy]  
interactive-timeout

弄好了啟動mysql，去檢視下編碼是不是為utf8了

   喜歡就關注下謝謝，彼此學習彼此進步