从今天(2010-11-12)开始,我正在运行 Glassfish 3.1-SNAPSHOT。
我正在使用嵌入式 EJBContainer。
根据 EJBContainer 的报告,在类路径上,我有一个 META-INF/persistence.xml。该文件定义了两个持久性单元:一个称为“ngp”,一个称为“cx”。
调试输出显示 Glassfish JPA 部署程序找到了它,并识别了 cx PU 和 ngp PU。
EJBContainer 出现以下非常常见的 JPA 错误:
java.lang.RuntimeException: Could not resolve a persistence unit corresponding to the persistence-context-ref-name [cx] in the scope of the module called [/Users/ljnelson/Projects/foo/target/test-classes/]. Please verify your application.
at com.sun.enterprise.deployment.BundleDescriptor.findReferencedPUViaEMRef(BundleDescriptor.java:693)
at com.sun.enterprise.deployment.EjbBundleDescriptor.findReferencedPUs(EjbBundleDescriptor.java:910)
at org.glassfish.persistence.jpa.JPADeployer.prepare(JPADeployer.java:140)
at com.sun.enterprise.v3.server.ApplicationLifecycle.prepareModule(ApplicationLifecycle.java:869)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:410)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240)
at org.glassfish.kernel.embedded.EmbeddedDeployerImpl.deploy(EmbeddedDeployerImpl.java:193)
at org.glassfish.kernel.embedded.EmbeddedDeployerImpl.deploy(EmbeddedDeployerImpl.java:142)
at org.glassfish.ejb.embedded.EJBContainerImpl.deploy(EJBContainerImpl.java:135)
at org.glassfish.ejb.embedded.EJBContainerProviderImpl.createEJBContainer(EJBContainerProviderImpl.java:132)
at javax.ejb.embeddable.EJBContainer.createEJBContainer(EJBContainer.java:127)
我再次强调,部署日志显示至少部署者遇到了两个持久性单元。
想要使用“cx”PU 的类包含通常的样板:
@PersistenceContext(unitName="cx")
private EntityManager em;
persistence.xml 位于(通常的 Maven 位置)中target/test-classes/META-INF
,如下所示:
<?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="cx" transaction-type="JTA">
<jta-data-source>java:global/jdbc/H2Test</jta-data-source>
<!-- snip -->
</persistence-unit>
<persistence-unit name="ngp" transaction-type="JTA">
<jta-data-source>java:global/jdbc/H2Test</jta-data-source>
<!-- snip -->
</persistence-unit>
</persistence>
Glassfish 嵌入式 EJBContainer 在工作时会输出以下内容:
Nov 12, 2010 1:24:05 PM com.sun.logging.LogDomains$1 log
FINE: Got com.sun.enterprise.deployment.node.PersistenceUnitNode@2026c088
Nov 12, 2010 1:24:05 PM com.sun.logging.LogDomains$1 log
FINER: With attribute name
Nov 12, 2010 1:24:05 PM com.sun.logging.LogDomains$1 log
FINER: With value cx
Nov 12, 2010 1:24:05 PM com.sun.logging.LogDomains$1 log
FINE: in class com.sun.enterprise.deployment.PersistenceUnitDescriptor method setName with cx
...snip...
Nov 12, 2010 1:24:05 PM com.sun.logging.LogDomains$1 log
FINE: Got com.sun.enterprise.deployment.node.PersistenceUnitNode@1648ff68
Nov 12, 2010 1:24:05 PM com.sun.logging.LogDomains$1 log
FINER: With attribute name
Nov 12, 2010 1:24:05 PM com.sun.logging.LogDomains$1 log
FINER: With value ngp
Nov 12, 2010 1:24:05 PM com.sun.logging.LogDomains$1 log
FINE: in class com.sun.enterprise.deployment.PersistenceUnitDescriptor method setName with ngp
故障排除食谱,有人吗?