我正在尝试使用基本的Seam 3 web应用程序来运行并使用jboss-javaee6-webapp来实现这一目标。使用http://seamframework.org/Documentation/CDIQuickstartForMavenUsers处的手册。
但是,我遇到了一些我几天都无法解决的问题。我基本上没有JavaEE的经验,因此解决方案可能非常简单。
我做了什么?我只是根据提供的原型生成了一个新的maven项目,并没有改变它的任何内容。我已经安装了Eclipse Helios,包括JBoss Tools和下载的JBoss 6.0.0,并让Eclipse成功地将应用程序部署到服务器。
部署时,示例代码中会发生异常。具体而言,会发生以下异常:
09:29:20,712 WARN [seam3-example] Seed data import failed.: java.lang.NullPointerException
at org.jboss.weld.integration.persistence.JBossJpaServices.resolvePersistenceContext(JBossJpaServices.java:59) [:6.0.0.Final]
at org.jboss.weld.util.Beans.injectEEFields(Beans.java:781) [:6.0.0.Final]
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget$1$1.proceed(ManagedBean.java:181) [:6.0.0.Final]
at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:54) [:6.0.0.Final]
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget$1.work(ManagedBean.java:176) [:6.0.0.Final]
at org.jboss.weld.bean.ManagedBean$FixInjectionPoint.run(ManagedBean.java:142) [:6.0.0.Final]
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget.inject(ManagedBean.java:170) [:6.0.0.Final]
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:339) [:6.0.0.Final]
at org.jboss.weld.context.unbound.DependentContextImpl.get(DependentContextImpl.java:67) [:6.0.0.Final]
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:669) [:6.0.0.Final]
at org.jboss.weld.bean.AbstractReceiverBean.getReceiver(AbstractReceiverBean.java:84) [:6.0.0.Final]
at org.jboss.weld.bean.ProducerField$1.produce(ProducerField.java:134) [:6.0.0.Final]
at org.jboss.weld.bean.AbstractProducerBean.create(AbstractProducerBean.java:361) [:6.0.0.Final]
at org.jboss.weld.bean.builtin.ee.EEResourceProducerField.createUnderlying(EEResourceProducerField.java:170) [:6.0.0.Final]
at org.jboss.weld.bean.builtin.ee.EEResourceProducerField.access$000(EEResourceProducerField.java:54) [:6.0.0.Final]
at org.jboss.weld.bean.builtin.ee.EEResourceProducerField$EEResourceCallable.call(EEResourceProducerField.java:80) [:6.0.0.Final]
at org.jboss.weld.bean.builtin.CallableMethodHandler.invoke(CallableMethodHandler.java:50) [:6.0.0.Final]
at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:62) [:6.0.0.Final]
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:125) [:6.0.0.Final]
at org.jboss.weldx.persistence.org$jboss$weld$bean-jboss$classloader:id="vfs:$$$Users$sander$Workspaces$eclipse$web-dev-32$$metadata$$plugins$org$jboss$ide$eclipse$as$core$JBoss_6$0_Runtime_Server1306911969901$deploy$seam3-example$war"-ProducerField-nl$jdi$examples$data$MemberRepositoryProducer$em_$$_WeldProxy.persist(org$jboss$weld$bean-jboss$classloader:id="vfs:$$$Users$sander$Workspaces$eclipse$web-dev-32$$metadata$$plugins$org$jboss$ide$eclipse$as$core$JBoss_6$0_Runtime_Server1306911969901$deploy$seam3-example$war"-ProducerField-nl$jdi$examples$data$MemberRepositoryProducer$em_$$_WeldProxy.java)
at nl.jdi.examples.data.SeedDataImporter.importData(SeedDataImporter.java:51) [:]
...
我已经为这个确切的异常搜索了一个解决方案,但我几乎找不到任何关于它的信息。这可能意味着我忽略了一些非常简单的事情。所以我分析了异常,发现了以下内容:
由于问题与持久性有关,我试图更改persistence.xml但是这没有付出代价。我认为问题出在JDNI / Persistence.xml / Server配置域中,但我无法确定。
有人能指出我正确的方向吗?
的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="primary">
<jta-data-source>jdbc/__default</jta-data-source>
<properties>
<!-- Properties for Hibernate (default provider for JBoss AS) -->
<property name="hibernate.hbm2ddl.auto" value="create-drop" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="false" />
<!-- Properties for EclipseLink (default provider for GlassFish) -->
<property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
<property name="eclipselink.logging.level" value="FINE" />
</properties>
</persistence-unit>
修改
当我尝试在Eclipse中将未更改的应用程序部署到GlassFish 3.1时,我收到以下错误:
cannot Deploy seam3-example
Deployment Error for module: seam3-example: Error occurred during deployment: Exception while loading the app : javax.ejb.CreateException: Initialization failed for Singleton SeedDataImporter. Please see server.log for more details.
Cannot create tables for application seam3-example. The expected DDL file seam3-example_primary_createDDL.jdbc is not available.
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Error in allocating a connection. Cause: Connection could not be allocated because: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused.
答案 0 :(得分:1)
我认为这是一个persistance.xml问题,因为你有:
<jta-data-source>jdbc/__default</jta-data-source>
这是Glassfish AS的默认值
试试这个:
<jta-data-source>java:/DefaultDS</jta-data-source>
这是JBoss的默认值
您是否在默认域中运行JBoss AS?
答案 1 :(得分:0)
至少在命令行上我可以开始这样做:
mvn archetype:generate -DarchetypeArtifactId=jboss-javaee6-webapp -DarchetypeGroupId=org.jboss.weld.archetypes -DarchetypeVersion=1.0.1.CR1 -DarchetypeRepository=central -DgroupId=com.example -DartifactId=jee-example -Dversion=0.0.1-SNAPSHOT
mvn clean package jboss:hard-deploy -Djboss.home=<jboss-6.0.0.Final>
<jboss-6.0.0.Final>/bin/run.sh
(Windws上的run.bat)启动jboss http://localhost:8080/jee-example/
有关详细信息,请查看由archtype在与pom.xml相同的文件夹中创建的readme.html
要在eclipse中工作,你应该安装
我没有尝试原型部分的原型......
答案 2 :(得分:0)
如果您检查原型生成的persistence.xml
文件,您会看到以下评论:
<!-- A matching data source is added to JBoss AS by deploying the project file default-ds.xml -->
<jta-data-source>jdbc/__default</jta-data-source>
在resources-jbossas
内部有一个default-ds.xml
文件,您应该将其部署到JBoss,以便能够在不更改任何代码的情况下使用该应用程序。