java - 使用 GenericDAO 插入第二个数据源时出错

Question

使用 GenericDAO 插入第二个数据源时出错

我正在尝试在 persistence.xml 中插入第二个碱基。我已经在jboss中配置了数据源并进行了测试。当在 xml 中插入第二个持久性单元并尝试引发 jboss 时，会发生以下错误。我尝试在每个 DAO 类中设置 @PersistenceContext(unitName = "unit-name") 和 @PersistenceUnit，但无济于事。我尝试遵循一些教程，但我不明白如何逐步适应我的上下文，也不知道是否是这种情况。

我想知道如何针对我的情况进行配置，我认为最大的区别是我有一个来自 GenericDAO 的 EntityManager，这让我很难理解。如果我必须在 DAO 或实体中注释其他内容，如果我必须创建另一个抽象类怎么办？

错误:

The persistent unitName has not been specified and there are persistent drive definitions 2 in the deployment of the deployment application "intranet.war". You can either change the deployment of the application to only have one definition of the persistence unit or specify the unitName for each reference of a persistence unit.

17: 37: 11,411 INFO [org.wildfly.extension.undertow] (MSC service thread 1-8) WFLYUT0006: Undertow HTTP listener default listening on 127.0.0.1:8080
17: 37: 11,491 INFO [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-2) WFLYJCA0001: Data source limit [java: jboss / datasources / ExampleDS]
17: 37: 11,492 INFO [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-2) WFLYJCA0001: Data source limit [java: jboss / datasources / intraDS]
17: 37: 11,491 INFO [org.jboss.as.connector.subsystems.datasources] (MSC service thread 1-8) WFLYJCA0001: Data source limit [java: jboss / datasources / intrasis]
17: 37: 11,524 INFO [org.jboss.as.server.deployment.scanner] (MSC service thread 1-4) WFLYDS0013: The FileSystemDeploymentService has been started for the directory C: \ Users \ vinicius.cipolli \ Devlopment \ jboss-eap -7.0 \ standalone \ deployments
17: 37: 11,528 INFO [org.jboss.as.server.deployment] (MSC service thread 1-1) WFLYSRV0027: c "intranet.war" (runtime-name: "intranet.war")
17: 37: 11,621 INFO [org.infinfin.factories.GlobalComponentRegistry] (MSC service thread 1-8) ISPN000128: Infinispan version: Infinispan 'Mahou' 8.1.2.Final-redhat-1
JBWS022052: Starting JBossWS 5.1.3.SP1-redhat-1 (Apache CXF 3.1.4.redhat-1) 17:37:11,661 INFO [org.jboss.ws.common.management] (MSC service thread 1-6)
17: 37: 12,706 INFO [org.jboss.as.jpa] (MSC service thread 1-5) WFLYJPA0002: Read the persistence.xml for intranet
17: 37: 12,707 INFO [org.jboss.as.jpa] (MSC service thread 1-5) WFLYJPA0002: Read the persistence.xml for intrasis
17: 37: 12,708 WARN [org.jboss.as.ee] (MSC service thread 1-5) WFLYEE0065: Invalid signature for method init annotated with javax.annotation.PostConstruct in br.sp.corpedu.intranet.domain .acod.service.EspecialityService class. The signature must be 'void methodName (InvocationContext ctx)'
17: 37: 12,709 WARN [org.jboss.as.ee] (MSC service thread 1-5) WFLYEE0065: Invalid signature for method init annotated with javax.annotation.PostConstruct in br.sp.corpedu.intranet.expose .resources.CourseResource class. The signature must be 'void methodName (InvocationContext ctx)'
17: 37: 12,709 WARN [org.jboss.as.ee] (MSC service thread 1-5) WFLYEE0065: Invalid signature for method init annotated with javax.annotation.PostConstruct in br.sp.corpedu.intranet.expose .resources.ResourceSpeciality of the class. The signature must be 'void methodName (InvocationContext ctx)'
17: 37: 12,709 WARN [org.jboss.as.ee] (MSC service thread 1-5) WFLYEE0065: Invalid signature for method init annotated with javax.annotation.PostConstruct in br.sp.corpedu.intranet.expose .resources.esto.ItemResource of the class. The signature must be 'void methodName (InvocationContext ctx)'
17: 37: 12,719 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC000001: Failed to start service jboss.deployment.unit. "Intranet.war" .DEPENDENCIES: org.jboss.msc .service.StartException in service jboss.deployment.unit. "intranet.war" .DEPENDENCIES: WFLYSRV0153: Failed to process DEPENDENCIES phase of deployment "intranet.war"
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start (DeploymentUnitPhaseService.java:154)
    at org.jboss.msc.service.ServiceControllerImpl $ StartTask.startService (ServiceControllerImpl.java:1948)
    at org.jboss.msc.service.ServiceControllerImpl $ StartTask.run (ServiceControllerImpl.java:1881)
    at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor $ Worker.run (ThreadPoolExecutor.java:624)
    at java.lang.Thread.run (Thread.java:748)
Caused by: java.lang.IllegalArgumentException: WFLYJPA0061: The persistent unitName has not been specified and there are persistent drive definitions 2 in the deployment of the deployment application "intranet.war". You can either change the deployment of the application to only have one definition of the persistence unit or specify the unitName for each reference of the persistence unit.
    at org.jboss.as.jpa.container.PersistenceUnitSearch.ambiguousPUError (PersistenceUnitSearch.java:187)
    at org.jboss.as.jpa.container.PersistenceUnitSearch.findWithinDeployment (PersistenceUnitSearch.java:153)
    at org.jboss.as.jpa.container.PersistenceUnitSearch.findPersistenceUnitSupplier (PersistenceUnitSearch.java:75)
    at org.jboss.as.jpa.container.PersistenceUnitSearch.resolvePersistenceUnitSupplier (PersistenceUnitSearch.java:64)
    at org.jboss.as.jpa.processor.JPAAnnotationProcessor.getPersistenceUnit (JPAAnnotationProcessor.java:372)
    at org.jboss.as.jpa.processor.JPAAnnotationProcessor.getBindingSource (JPAAnnotationProcessor.java:296)
    at org.jboss.as.jpa.processor.JPAAnnotationProcessor.processField (JPAAnnotationProcessor.java:171)
    at org.jboss.as.jpa.processor.JPAAnnotationProcessor.processPersistenceAnnotations (JPAAnnotationProcessor.java:138)
    at org.jboss.as.jpa.processor.JPAAnnotationProcessor.deploy (JPAAnnotationProcessor.java:100)
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start (DeploymentUnitPhaseService.java:147)
        ... more
    
 

    17:37:12:17 ERROR [org.jboss.as.controller.management-operation]
     (Controller Boot Thread) WFLYCTL0013: Deploy Failure -
     address ([("deployment" = "intranet.war"])) - failure to describe:
     {"WFLYCTL0080: Service Failure" =
     {"jboss.deployment.unit. \" intranet.war \ "DEPENDENCIES" =
     "org.jboss.msc.service.StartException in service
     jboss.deployment.unit. \ "intranet.war \" DEPENDENCIES: WFLYSRV0153:
     Failed to process DEPENDENCIES phase of deployment \ "intranet.war \"
         Caused by: java.lang.IllegalArgumentException: WFLYJPA0061: The persisted unitName has not been specified and there are
    Persistent Drive 2 in Deployment Deployment
    \ "intranet.war \". You can either change the application deployment
    to have only one
    specify the unit for each reference of a unit of
    persistence. "}} 17: 37: 12,752 INFO [org.jboss.as.server]` enter code here`
    (ServerService Thread Pool - 34) WFLYSRV0010: Deployed
    "intranet.war" (runtime-name: "intranet.war")

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<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">
   <persistence-unit name="intranet" transaction-type="JTA">
      <jta-data-source>java:jboss/datasources/intraDS</jta-data-source>

      <properties>
         <!-- Properties for Hibernate -->
         <property name="hibernate.hbm2ddl.auto" value="none" />
         <property name="hibernate.show_sql" value="false" />
         <property name="hibernate.format_sql" value="false" />
      </properties>
   </persistence-unit>

   <persistence-unit name="intrasis" transaction-type="JTA">
      <jta-data-source>java:jboss/datasources/intrasis</jta-data-source>

      <properties>
         <property name="hibernate.hbm2ddl.auto" value="none" />
         <property name="hibernate.show_sql" value="false" />
         <property name="hibernate.format_sql" value="false" />
      </properties>
   </persistence-unit>
</persistence>

GenericDAO 类

public abstract class GenericDAO<T> implements Serializable {
    private static final long serialVersionUID = -4843781544193464186L;

    private static Logger logger = LogManager.getLogger(GenericDAO.class);

    protected Class<T> classe;

    @PersistenceContext
    protected transient EntityManager entityManager;


    protected GenericDAO(final Class<T> classe) {
        this.classe = classe;
    }

    public T save(final T entity) {
        try {
            entityManager.persist(entity);
            entityManager.flush();

        } catch (Exception e) {
            logger.error("Falha ao persistir a entidade: " + entity.toString(), e);
            throw TypeApplicationException.PERSISTENCIA.buildException("Ocorreu uma falha na persistencia");
        }

        return entity;
    }

应该使用基础 Intrasis 的类 itemDAO。在其中我尝试使用 @PersistenceContext (unitName = "intrasis")

public class ItemDAO extends GenericDAO<Item> {

    private static final long serialVersionUID = 1L;

    @PersistenceContext(unitName="intrasis")
    protected transient EntityManager entityManager;

    protected ItemDAO() {
        super(Item.class);
    }



}

另一个使用其他银行和 tbm 的类我尝试了其他银行的 PersistenceContext。

public class CursoDAO extends GenericDAO<Curso> {
    private static final long serialVersionUID = 5659645428769766934L;

    @PersistenceContext(unitName="intranet")
    protected transient EntityManager entityManager;

    protected CursoDAO() {
        super(Curso.class);
    }

    public List<Curso> buscarTodos() {
        String jpql = "SELECT e FROM Curso e";

        TypedQuery<Curso> typedQuery = entityManager.createQuery(jpql, Curso.class);
        return typedQuery.getResultList();
    }

Answer 1

1) 您可能有一个未指定单元名称的注入(inject)点。如果不是这种情况，请尝试将此行添加到 persistence.xml 中:

<property name="wildfly.jpa.default-unit" value="true"/>

2)在您的 GenericDAO 中不要使用:

@PersistenceContext
protected transient EntityManager entityManager;

尝试通过构造函数传递实体管理器。