【方言】Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set

xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0"> <persistence-unit name="userPU" transaction-type="RESOURCE_LOCAL"> <!--jpa的提供者--> <provider>org.hibernate.ejb.HibernatePersistence</provider> <properties> <!--声明数据库连接的驱动--> <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/> <!--jdbc数据库的连接地址--> <property name="hibernate.connection.url" value="jdbc:mysql://10.32.11.74:3306/jparest"/> <property name="hibernate.connection.username" value="root"/> <property name="hibernate.connection.password" value="123456"/> <!--配置方言--> <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/> <!--激活查询日志功能--> <property name="hibernate.show_sql" value="true"/> <!--优雅地输出Sql--> <property name="hibernate.format_sql" value="true"/> <!--添加一条解释型标注--> <property name="hibernate.use_sql_comments" value="false"/> <!--配置如何根据java模型生成数据库表结构,常用update,validate--> <property name="hibernate.hbm2ddl.auto" value="update"/> </properties> </persistence-unit> </persistence>

 

 

 <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="showSql" value="${hibernate.showSql}" />
                <property name="generateDdl" value="true" />

                <property name="databasePlatform"
                          value="org.hibernate.dialect.MySQL5Dialect">
                </property>
            </bean>
        </property>

 

【方言】Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set

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