我試圖實現一個演示,該演示使用帶有JBoss AS默認的休眠和默認數據庫的JBoss AS 7。我的實現類似於來自JBoss的「登錄」示例(我有一些額外的項目來實現Web服務並將其部署爲EAR),我無法發現其中的差異。無論如何,我不斷地得到運行時例外,如無法在JBoss AS 7中獲得持久性(「無法在子部署中找到名爲的部署單元)
Caused by: java.lang.RuntimeException: Can't find a deployment unit named at subdeployment "myproject.persistence.war" of deployment "myproject.ear"
at org.jboss.as.weld.services.bootstrap.WeldJpaInjectionServices.getScopedPUName(WeldJpaInjectionServices.java:94) [jboss-as-weld-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.as.weld.services.bootstrap.WeldJpaInjectionServices.resolvePersistenceContext(WeldJpaInjectionServices.java:59) [jboss-as-weld-7.0.2.Final.jar:7.0.2.Final]
at org.jboss.weld.util.Beans.injectEEFields(Beans.java:784) [weld-core-1.1.2.Final.jar:2011-07-26 15:02]
我的MANIFEST.MF
Manifest-Version: 1.0
Dependencies: org.hibernate
我beans.xml裏是空的。在我的lib文件夾中,我有hibernate jars可以訪問本地休眠功能。
我的persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<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">
<persistence-unit name="accessControlDatabase">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:jboss/datasources/ExampleDS</jta-data-source>
<properties>
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
</properties>
</persistence-unit>
</persistence>
和我的兩個相關類:
import javax.enterprise.inject.Produces;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
public class Resources {
@SuppressWarnings("unused")
@Produces
@PersistenceContext(name = "accessControlDatabase")
private EntityManager em;
}
import java.util.List;
import javax.enterprise.context.RequestScoped;
import javax.inject.Inject;
import javax.inject.Named;
import javax.persistence.EntityManager;
import myproject.model.Session;
import myproject.model.User;
@Named("accessControlRepository")
@RequestScoped
public class AccessControlRepository {
@Inject
private EntityManager em;
@SuppressWarnings("unchecked")
public List<Session> getAllSessions() {
return em.createQuery("from Session").getResultList();
}
}
什麼會導致異常?我應該尋找什麼來解決問題?
以前的'persistence.xml'在哪裏?在EAR中的ejb-jar的META-INF目錄中? –
對於任何使用war的人來說,persistence.xml應該在your_app_name \ src \ main \ resources \ META-INF中,這花了我1個小時:( – halil
嗨,許多IDE的(像intellij)在WRONG文件夾中創建持久xml '使用.war。非常有幫助評論 – Goot