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java - 找不到元素 'persistence' 的声明

转载 作者:太空狗 更新时间:2023-10-29 23:01:12 25 4
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把persistence.xml放在eclipse项目的classpath下因为之前的错误是找不到文件。现在给出这个错误:

Caused by: javax.persistence.PersistenceException: Invalid persistence.xml. Error parsing XML [line : -1, column : -1] : cvc-elt.1: Can not find the declaration of element 'persistence'

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.1"
xsi:schemalocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="default" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
<property name="javax.persistence.jdbc.url" value="jdbc:postgresql://localhost:5432/Automoveis" />
<property name="javax.persistence.jdbc.user" value="postgres" />
<property name="javax.persistence.jdbc.password" value="1234" />
<property name="javax.persistence.jdbc.driver" value="org.postgresql.jdbc.Driver" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.hbm2ddl.auto" value="create" />
</properties>
</persistence-unit>
</persistence>

最佳答案

问题是您混合了 JPA 2.0 和 JPA 2.1 表示法。

要么这个

<persistence 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_1.xsd"
version="2.1">

对于 JPA 2.1 或这个

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">

用于 JPA 2 但不是它们的混合。

参见 http://www.oracle.com/webfolder/technetwork/jsc/xml/ns/persistence/index.html了解详情。

关于java - 找不到元素 'persistence' 的声明,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/20818737/

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