使用Hibernate作为我的JPA提供程序时出现的各种错误
使用Hibernate作为我的JPA提供程序时出现的各种错误
提问于 2016-05-06 10:57:04
我正在尝试使用JPA，所以我遵循了一个指南，并尝试用Hibernate自己完成它。我创建了一个只有两个变量的实体"testEntity“，并创建了一个带有测试方法的测试类。
我的连接池有一个JDBC连接，该连接已经过测试并正在工作。我配置了我的持久性单元来使用它。查看我的persistence.xml：
<?xml version="1.0" encoding="UTF-8"?>
<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">
<persistence-unit name="PruebaswebPU" transaction-type="JTA">
<provider>org.hibernate.jpa.HibernatePersistenceProvider </provider>
<jta-data-source>java:app/jdbc/nuevaConexion</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.schema-generation.database.action" value="create"/>
</properties>
</persistence-unit>
</persistence>我在我的考试课上用它：
EntityManagerFactory emfactory = Persistence.createEntityManagerFactory("PruebaswebPU");
EntityManager entitymanager = emfactory.createEntityManager();
entitymanager.getTransaction().begin();
testEntity ent = new testEntity();
ent.setId(5l);
ent.setNombre("Nombraco");
entitymanager.persist(ent);
entitymanager.getTransaction().commit();
entitymanager.close();
emfactory.close();..。但我发现了很多错误：
may 06, 2016 12:52:26 PM org.hibernate.ejb.HibernatePersistence logDeprecation WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
may 06, 2016 12:52:26 PM org.hibernate.ejb.HibernatePersistence logDeprecation WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
may 06, 2016 12:52:26 PM org.hibernate.ejb.HibernatePersistence logDeprecation WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.
Exception in thread "main" javax.persistence.PersistenceException: Unable to locate persistence units
at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:99)
at org.hibernate.ejb.HibernatePersistence.getEntityManagerFactoryBuilderOrNull(HibernatePersistence.java:93)
at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:86)
at org.hibernate.ejb.HibernatePersistence.getEntityManagerFactoryBuilderOrNull(HibernatePersistence.java:101)
at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:67)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:54)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
at testing.samplePersistence.main(samplePersistence.java:20)
Caused by: javax.persistence.PersistenceException: Invalid persistence.xml. Error parsing XML [line : -1, column : -1] : cvc-complex-type.2.4.b: El contenido del elemento 'persistence' no está completo. Se esperaba uno de '{"http://xmlns.jcp.org/xml/ns/persistence":persistence-unit}'.
at org.hibernate.jpa.boot.internal.PersistenceXmlParser.validate(PersistenceXmlParser.java:377)
at org.hibernate.jpa.boot.internal.PersistenceXmlParser.loadUrl(PersistenceXmlParser.java:310)
at org.hibernate.jpa.boot.internal.PersistenceXmlParser.parsePersistenceXml(PersistenceXmlParser.java:114)
at org.hibernate.jpa.boot.internal.PersistenceXmlParser.doResolve(PersistenceXmlParser.java:104)
at org.hibernate.jpa.boot.internal.PersistenceXmlParser.locatePersistenceUnits(PersistenceXmlParser.java:86)
at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:95) ... 8 more
C:\Users\hp\AppData\Local\NetBeans\Cache\8.1\executor-snippets\run.xml:53: Java returned: 1 BUILD FAILED (total time: 0 seconds)我是不是遗漏了什么？提前感谢！
编辑：
Netbeans在此项目中使用的自动添加库的一个小屏幕截图：
回答 1
Stack Overflow用户
发布于 2016-05-06 11:15:54
您的问题是persistence.xml不完整。你可能需要一些额外的部分。要了解更多信息，您可以通过这个教程。
persistence.xml**.** 您的也有额外的空间
persistence.xml中的第一个变化
<provider>org.hibernate.jpa.HibernatePersistenceProvider </provider>至
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>那就跑吧。如果有什么问题，就通知我。
更新：
请将版本更改如下：
<persistence version="2.0" 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">页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/37070658
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