Hibernate utf8mb4字符集

Question

你能告诉我我做错了什么吗？

Hibernate版本:4.3.11终结

MariaDb 10.3

在控制台中，我可以看到：

Dec 30, 2018 5:02:20 PM org.hibernate.engine.jdbc.spi.SqlExceptionHelper$StandardWarningHandler logWarning
WARN: Incorrect string value: '\xF0\x9F\x90\xB5 D...' for column 'nick' at row 1

hibernate.cfg.xml

<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/dbname?autoReconnect=true&amp;zeroDateTimeBehavior=convertToNull&amp;useUnicode=true&amp;character_set_server=utf8mb4</property>
<property name="hibernate.connection.username">login</property>
<property name="hibernate.connection.password">password</property>
<property name="hibernate.connection.CharSet">utf8mb4</property>
<property name="hibernate.connection.characterEncoding">utf8</property>
<property name="hibernate.connection.useUnicode">true</property>

当我通过PhpMyAdmin插入相同的值时，它正确工作。

Answer 1

是的，MySQL需要utf8mb4为\xF0\x9F\x90\xB5服务。但外界称它为UTF-8。

&character_set_server=utf8mb4

& -> &

character_set_server=utf8mb4 -> characterEncoding=UTF-8