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我正在使用 Hibernate，下面的 persistence.xml 工作正常。但是在 Eclipse 中从 Table 创建一个新的 JPA 实体后，persistence.xml 给出错误 - 元素“persistence-unit”不能包含文本内容。内容类型被定义为仅元素。我已从 persistence.xml 中删除了新类，但错误仍然存​​在。

<persistence version="2.2"
    xmlns="http://xmlns.jcp.org/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd">
    <persistence-unit name="FirstJPAProject">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <class>com.boi.network.test.entity.Location</class>
        <class>com.boi.network.test.entity.Supportvendor</class>
        <class>com.boi.network.test.entity.Project</class>
        <properties>
            <!-- The JDBC URL to the database instance -->
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/boi?useSSL=false&amp;useJDBCCompliantTimezoneShift=true&amp;useLegacyDatetimeCode=false&amp;serverTimezone=UTC"></property>          
            <property name="javax.persistence.jdbc.user" value="dba"></property>
            <property name="javax.persistence.jdbc.password" value="12345"></property>
        </properties>
    </persistence-unit>
</persistence>```
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1 回答 1

0

Hibernate 支持自动检测，因此只需删除您的类元素并添加此属性，还可以使用 @Entity 注释来注释您的类。

<persistence version="2.2"
    xmlns="http://xmlns.jcp.org/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_2.xsd">
    <persistence-unit name="FirstJPAProject">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <!--<class>com.boi.network.test.entity.Location</class>
        <class>com.boi.network.test.entity.Supportvendor</class>
        <class>com.boi.network.test.entity.Project</class>-->
        <properties>
            <!-- The JDBC URL to the database instance -->
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/boi?useSSL=false&amp;useJDBCCompliantTimezoneShift=true&amp;useLegacyDatetimeCode=false&amp;serverTimezone=UTC"></property>          
            <property name="javax.persistence.jdbc.user" value="dba"></property>
            <property name="javax.persistence.jdbc.password" value="12345"></property>
            <property name="hibernate.archive.autodetection" value="class, hbm"/>
        </properties>
    </persistence-unit>
</persistence>```

看看这个答案

于 2020-05-23T15:18:39.020 回答