Response的默认字符集是UTF - 8，数据库操作的默认字符集也是UTF - 8。
The default charset for responses sent with Rails is UTF-8. The default charset for database operations is UTF-8.
Response的默认字符集是UTF - 8，数据库操作的默认字符集也是UTF - 8。
The default charset for responses sent with Rails is UTF-8. The default charset for database operations is UTF-8.
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