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MYSQL创建数据库时候直接指定编码和排序规则_MySQL

Jun 01, 2016 pm 01:35 PM
mysql Developer database

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MYSQL创建数据库时候直接指定编码和排序规则

 

mysql 创建数据库时指定编码很重要,很多开发者都使用了默认编码,但是我使用的经验来看,制定数据库的编码可以很大程度上避免倒入导出带来的乱码问题。 

    我们遵循的标准是,数据库,表,字段和页面或文本的编码要统一起来很多mysql数据库工具(除了phpmyadmin,我偶尔用,功能强速度慢)都不支持创建时指定数据库编码,当然可以改my.ini来解决这个问题,但是需要重新启动mysql,不过用下面的语句会更有效 

 

GBK: create database '数据库名' DEFAULT CHARACTER SET gbk COLLATE gbk_chinese_ci; 

 

UTF8: CREATE DATABASE `test2` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci 

 

注意:如果不是通过my.ini配置文件设置的内容,只在当前状态下有效,当重启数据库服务后失效。所以如果想要不出现乱码只有修改my.ini文件,数据库编码可以在创建数据库时候指定UTF8,如下:

|character_set_client      | utf8                                  | 

| character_set_connection | utf8                                  | 

| character_set_database   | utf8                                  | 

| character_set_filesystem | binary                                | 

| character_set_results    | utf8                                  | 

| character_set_server     | latin1                                | 

| character_set_system     | utf8          

 

注意该配置| character_set_server     | latin1 无法设置成UTF8 

交互时候仍然会出现乱码。 

 

只有当修改my.ini中设置UTF8,才会全部修改成UTF8 

 

------------------------- 

mysql设置编码命令

 

SET character_set_client = utf8; 

SET character_set_connection = utf8; 

SET character_set_database = utf8; 

SET character_set_results = utf8;/*这里要注意很有用*/ 

SET character_set_server = utf8; 

 

SET collation_connection = utf8_bin; 

SET collation_database = utf8_bin; 

SET collation_server = utf8_bin; 

 

my.ini中配置默认编码 

default-character-set=utf8 

 

连接数据库设置编码 

jdbc:mysql://192.168.0.5:3306/test?characterEncoding=utf8 

 

/*****************************************java与mysq编码对应****************************************/ 

java中的常用编码UTF-8;GBK;GB2312;ISO-8859-1; 

对应mysql数据库中的编码utf8;gbk;gb2312;latin1 

 

--------------------------- 

数据库连接串中指定字符集URL=jdbc:mysql://yourIP/college?user=root&password=yourPassword&useUnicode=true&characterEncoding=gbk 

 

#Mysql

 

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