使用 EJB 来持久化。如何在其上配置持久性单元？答案

【问题标题】：Using EJB to persist. How do I configure the Persistence Unit on it?使用 EJB 来持久化。如何在其上配置持久性单元？
【发布时间】：2015-10-22 14:55:03
【问题描述】：

我一直在学习 J2EE 技术。现在我正在尝试在 EJB 中删除我的 CRUD，但是当我尝试部署我的 Web 应用程序时，我遇到了这些问题。我对此一无所知。你能给我一些建议吗？

这是我实际的 persistence.xml：

    <?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" 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">
    <persistence-unit name="UsuarioPU" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>LP3</jta-data-source>
        <class>mack.entities.UsuarioImpl</class>
        <exclude-unlisted-classes>false</exclude-unlisted-classes>
        <properties>       
            <property name="javax.persistence.jdbc.url" value="jdbc:derby://localhost:1527/LP3"/>       
            <property name="javax.persistence.jdbc.user" value="lp3"/>       
            <property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/>       
            <property name="javax.persistence.jdbc.password" value="lp3"/>       
            <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>     
        </properties> 
    </persistence-unit>
</persistence>

这是我尝试部署应用程序时出现的 WildFly 错误：

12:26:09,070 INFO  [org.jboss.weld.deployer] (MSC service thread 1-6) JBAS016002: Processing weld deployment Atividade_1.war
12:26:09,285 ERROR [org.jboss.as.controller.management-operation] (XNIO-1 task-2) JBAS014613: Operation ("add") failed - address: ([{"deployment" => "Atividade_2Enterprise.ear"}]) - failure description: {"JBAS014771: Services with missing/unavailable dependencies" => [
    "jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean.ValidatorFactory is missing [jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean]",
    "jboss.deployment.unit.\"Atividade_2Enterprise.ear\".weld.weldClassIntrospector is missing [jboss.deployment.unit.\"Atividade_2Enterprise.ear\".beanmanager]",
    "jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean.InAppClientContainer is missing [jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean]",
    "jboss.deployment.subunit.\"Atividade_2Enterprise.ear\".\"Atividade_2EJB.jar\".weld.weldClassIntrospector is missing [jboss.deployment.subunit.\"Atividade_2Enterprise.ear\".\"Atividade_2EJB.jar\".beanmanager]",
    "jboss.persistenceunit.\"Atividade_2Enterprise.ear/EJBPersistencia.jar#UsuarioPU\".__FIRST_PHASE__ is missing [jboss.naming.context.java.LP3]",
    "jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean.Validator is missing [jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean]",
    "jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean.InstanceName is missing [jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean]"
]}
12:26:09,367 ERROR [org.jboss.as.server] (XNIO-1 task-2) JBAS015870: Deploy of deployment "Atividade_2Enterprise.ear" was rolled back with the following failure message:
{"JBAS014771: Services with missing/unavailable dependencies" => [
    "jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean.ValidatorFactory is missing [jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean]",
    "jboss.deployment.unit.\"Atividade_2Enterprise.ear\".weld.weldClassIntrospector is missing [jboss.deployment.unit.\"Atividade_2Enterprise.ear\".beanmanager]",
    "jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean.InAppClientContainer is missing [jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean]",
    "jboss.deployment.subunit.\"Atividade_2Enterprise.ear\".\"Atividade_2EJB.jar\".weld.weldClassIntrospector is missing [jboss.deployment.subunit.\"Atividade_2Enterprise.ear\".\"Atividade_2EJB.jar\".beanmanager]",
    "jboss.persistenceunit.\"Atividade_2Enterprise.ear/EJBPersistencia.jar#UsuarioPU\".__FIRST_PHASE__ is missing [jboss.naming.context.java.LP3]",
    "jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean.Validator is missing [jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean]",
    "jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean.InstanceName is missing [jboss.naming.context.java.comp.Atividade_2Enterprise.Atividade_2EJB.Atividade_2Bean]"
]}
12:26:09,398 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-5) JBAS015974: Stopped subdeployment (runtime-name: EJBPersistencia.jar) in 35ms
12:26:09,396 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-4) JBAS015974: Stopped subdeployment (runtime-name: Atividade_2EJB.jar) in 33ms
12:26:09,647 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-3) JBAS015974: Stopped subdeployment (runtime-name: Atividade_1.war) in 285ms
12:26:09,785 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-3) JBAS015877: Stopped deployment Atividade_2Enterprise.ear (runtime-name: Atividade_2Enterprise.ear) in 423ms

谢谢你们！

【问题讨论】：

这些 jars/ears 在您的应用服务器上可用吗？
@redFIVE 感谢您的帮助！

标签： java jakarta-ee ejb wildfly

【解决方案1】：

RedFIVE，感谢您的关注！我正在和我的老师交谈，他让我想起了 NETBeans 与 Hibernate JPA 的问题。因此，我尝试更改 EclpiseLink 提供程序，并在 GlassingFish 服务器上运行它。终于成功了！

再次感谢！

【讨论】：