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                `persistence.xml`位于 `src/main/resources/META-INF/persistence.xml` ~~~ <?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0"> <!--需要配置persistence-unit節點 持久化單元: name:持久化單元名稱 transaction-type:事務管理的方式 JTA: 分布式事先管理 RESOURCE_LOCAL:本地事務管理 --> <persistence-unit name="myJPA" transaction-type="RESOURCE_LOCAL"> <!-- jpa的實現方式--> <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> <properties> <!-- 數據庫信息 用戶名, javax.persistence.jdbc.user 密碼, javax.persistence.jdbc.password 驅動, javax.persistence.jdbc.driver 數據庫地址 javax.persistence.jdbc.url --> <property name="javax.persistence.jdbc.user" value="root"/> <property name="javax.persistence.jdbc.password" value="admin123"/> <property name="javax.persistence.jdbc.driver" value="com.mysql.cj.jdbc.Driver"/> <!-- 三個/ ///表示本地路徑,端口為3306 jdbc:mysql://localhost:3306/test?serverTimezone=UTC--> <property name="javax.persistence.jdbc.url" value="jdbc:mysql:///test?serverTimezone=UTC"/> <!-- 可選配置:配置jpa實現方的配置信息 顯示sql執行語句 自動創建數據庫表 hibernate.hbm2ddl.auto create,程序運行時創建數據庫表(如果有表,先刪除表再創建表) update,程序運行時創建表(如果表存在,則不會創建) none 不會創建表 --> <property name="hibernate.show_sql" value="true"/> <property name="hibernate.hbm2ddl.auto" value="update"/> </properties> </persistence-unit> </persistence> ~~~
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