MySQL과 함께 OpenJPA를 사용하고 있습니다. 다음은 내 persistence.xml 파일입니다.OpenJPA + MySQL 문제
<?xml version="1.0" encoding="UTF-8"?>
<!--
For DB connectivity
-->
<persistence version="1.0">
<persistence-unit name="jpa">
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
<class>com.Login</class>
</persistence-unit>
<properties>
<property name="openjpa.ConnectionURL" value="jdbc:mysql://localhost:3306/jpa"/>
<property name="openjpa.ConnectionDriverName" value="com.mysql.jdbc.Driver"/>
<property name="openjpa.ConnectionUserName" value="root"/>
<property name="openjpa.ConnectionPassword" value="root"/>
<property name="openjpa.jdbc.DBDictionary" value="mysql(SimulateLocking=true)"/>
<property name="openjpa.Log" value="DefaultLevel=WARN, Tool=INFO"/>
</properties>
</persistence>
Java 클래스를 실행할 때 예외가 발생합니다. 최대 절전 모드를 사용하고 persistence.xml에서 구성을 변경하면 동일한 코드가 제대로 작동하지만 OpenJPA에서는 작동하지 않습니다. 누구든지이 문제를 해결할 수 있습니까?
Exception in thread "main" javax.persistence.PersistenceException: Explicit persistence provider error(s) occurred for "jpa" after trying the following discovered implementations: org.apache.openjpa.persistence.PersistenceProviderImpl from provider: org.apache.openjpa.persistence.PersistenceProviderImpl
at javax.persistence.Persistence.createPersistenceException(Persistence.java:244)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:186)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:72)
at com.JPALogin.main(JPALogin.java:26)
Caused by: <openjpa-2.2.0-r422266:1244990 nonfatal general error> org.apache.openjpa.util.GeneralException: org.xml.sax.SAXException: file:/E:/work/JPAPlain/build/classes/META-INF/persistence.xml [Location: Line: 5, C: 28]: org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'persistence'.
at org.apache.openjpa.lib.meta.XMLMetaDataParser.parseNewResource(XMLMetaDataParser.java:427)
at org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:347)
at org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:324)
at org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:297)
at org.apache.openjpa.persistence.PersistenceProductDerivation$ConfigurationParser.parse(PersistenceProductDerivation.java:772)
at org.apache.openjpa.persistence.PersistenceProductDerivation.parseResources(PersistenceProductDerivation.java:556)
at org.apache.openjpa.persistence.PersistenceProductDerivation.load(PersistenceProductDerivation.java:522)
at org.apache.openjpa.persistence.PersistenceProductDerivation.load(PersistenceProductDerivation.java:336)
at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:86)
at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:153)
at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:62)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:152)
... 2 more
"속성"이 XML 요소 외부에서 지정된 이유는 무엇입니까? 그들은 안에 있어야합니다. –
DataNucleus
예, 실수였습니다. 내부에 넣어도 작동하지 않았습니다 – Kaps