MySQL命令行界面中出现字符错误提示的原因及解决

vi /etc/sysconfig/i18n 

LANG=zh_CN.UTF-8 
LANGUAGE=zh_CN.UTF-8:zh_CN.GB2312:zh_CN 
SUPPORTED=zh_CN.UTF-8:zh_CN:zh:en_US.UTF-8:en_US:en 
SYSFONT=lat0-sun16 

cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \ 

-DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \ 
-DDEFAULT_CHARSET=utf8 \ 
-DDEFAULT_COLLATION=utf8_general_ci \ 
-DWITH_EXTRA_CHARSETS:STRING=utf8,gbk \ 
-DWITH_MYISAM_STORAGE_ENGINE=1 \ 
-DENABLED_LOCAL_INFILE=ON \ 
-DWITH_INNOBASE_STORAGE_ENGINE=1 \ 
-DWITH_READLINE=1 \ 
-DENABLED_LOCAL_INFILE=1 \ 
-DMYSQL_DATADIR=/var/mysql/data 

vi /etc/profile  

LANG=zh_CN.GB2312 
export LANG 

mysql -uroot -p database_name < database_backup.sql --default-character-set=utf8