我正在尝试将 war 部署到 JBoss AS 7.1.1 服务器中，但在尝试注入(inject) EntityManager 时部署失败:
17:44:48,037 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC00001: Failed to start service jboss.deployment.unit."c3e.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."c3e.war".WeldService: org.jboss.weld.exceptions.DeploymentException: Exception List with 1 exception:
Exception 0 :
org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [EntityManager] with qualifiers [@Default] at injection point [[field] @Inject xyz.beans.UploadImpl.em]
at org.jboss.weld.bootstrap.Validator.validateInjectionPoint(Validator.java:275)
at org.jboss.weld.bootstrap.Validator.validateInjectionPoint(Validator.java:244)
at org.jboss.weld.bootstrap.Validator.validateBean(Validator.java:107)
at org.jboss.weld.bootstrap.Validator.validateRIBean(Validator.java:127)
at org.jboss.weld.bootstrap.Validator.validateBeans(Validator.java:346)
at org.jboss.weld.bootstrap.Validator.validateDeployment(Validator.java:331)
at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:366)
at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:83)
at org.jboss.as.weld.services.WeldService.start(WeldService.java:76)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
通常我认为这是由于 Weld 无法找到合适的要注入(inject)的 bean 造成的。但是，我为 EntityManager 定义了一个生产者:
@ApplicationScoped
public class Resources {
@PersistenceContext(unitName="myUnit", type=PersistenceContextType.EXTENDED)
private EntityManager entityManager;
@Produces
public EntityManager getEntityManager() {
return entityManager;
}
}
它提示的注入(inject)点如下所示:
@RequestScoped
@Named("upload")
public class UploadImpl implements Upload, Serializable {
private static final long serialVersionUID = 1L;
@Inject
EntityManager em;
}
在另一个项目中，完全相同的设置运行得很好。有什么想法吗？
最佳答案
上面评论中回答的问题:@Produces 注释是从错误的包导入的。谢谢你，安东尼·萨博特·杜兰德!
关于java - Weld 忽略生产者，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17838997/