Google Guice 和 JPA 注入 - 奇怪的错误
我目前正在开发 JPA Jersey Servlet,并尝试使用 Guice 进行依赖注入。问题是,我收到以下错误:
Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: com.google.inject.CreationException: Guice creation errors:
1) null returned by binding at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:63)
but parameter 1 of com.google.inject.persist.jpa.JpaPersistService.<init>() is not @Nullable
while locating java.util.Properties annotated with @com.google.inject.persist.jpa.Jpa()
for parameter 1 at com.google.inject.persist.jpa.JpaPersistService.<init>(JpaPersistService.java:43)
at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:67)
while locating com.google.inject.persist.jpa.JpaPersistService
for field at com.google.inject.persist.jpa.JpaLocalTxnInterceptor.emProvider(JpaLocalTxnInterceptor.java:33)
at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:76)
2) null returned by binding at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:63)
but parameter 1 of com.google.inject.persist.jpa.JpaPersistService.<init>() is not @Nullable
while locating java.util.Properties annotated with @com.google.inject.persist.jpa.Jpa()
for parameter 1 at com.google.inject.persist.jpa.JpaPersistService.<init>(JpaPersistService.java:43)
at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:67)
while locating com.google.inject.persist.jpa.JpaPersistService
while locating com.google.inject.persist.UnitOfWork
for field at com.google.inject.persist.jpa.JpaLocalTxnInterceptor.unitOfWork(JpaLocalTxnInterceptor.java:36)
at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:76)
2 errors
我生成此错误的代码是:
install(new JpaPersistModule("theseen"));
filter("/*").through(PersistFilter.class);
如果我通过实例化 EntitiManager 并取消注释这些行来使用“标准”方式,则不会发生任何情况。
EntityManagerFactory emf = Persistence
.createEntityManagerFactory("theseen");
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
em.merge(s);
em.getTransaction().commit();
就像魅力一样。所以我认为数据库连接的设置一定是没问题的。
这些错误可能是什么?我在另一个测试环境上测试了同一个应用程序,它可以工作!两台机器都使用 Glassfish 3.1、Eclipse Indigo 以及 m2eclipse 和 m2wtp 集成。我将 Guice 3.0 与 guice-persist 3.0 和 guice-servlet 3.0 一起使用。该应用程序运行的计算机运行带有 OpenJDK 的 Ubuntu 11.04,出现问题的计算机使用带有 JDK1.6v26 的 Windows 7。我通常使用 Glassfish 提供的数据源,但即使使用普通的 persistence.xml 也不起作用。
我很困惑...... 你知道 JPA 的 Guice 注入有什么问题吗?
Im currently working on a JPA Jersey Servlet and Im trying to use Guice for dependency injection. The Problem is, that I get the following error:
Exception while loading the app : java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: com.google.inject.CreationException: Guice creation errors:
1) null returned by binding at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:63)
but parameter 1 of com.google.inject.persist.jpa.JpaPersistService.<init>() is not @Nullable
while locating java.util.Properties annotated with @com.google.inject.persist.jpa.Jpa()
for parameter 1 at com.google.inject.persist.jpa.JpaPersistService.<init>(JpaPersistService.java:43)
at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:67)
while locating com.google.inject.persist.jpa.JpaPersistService
for field at com.google.inject.persist.jpa.JpaLocalTxnInterceptor.emProvider(JpaLocalTxnInterceptor.java:33)
at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:76)
2) null returned by binding at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:63)
but parameter 1 of com.google.inject.persist.jpa.JpaPersistService.<init>() is not @Nullable
while locating java.util.Properties annotated with @com.google.inject.persist.jpa.Jpa()
for parameter 1 at com.google.inject.persist.jpa.JpaPersistService.<init>(JpaPersistService.java:43)
at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:67)
while locating com.google.inject.persist.jpa.JpaPersistService
while locating com.google.inject.persist.UnitOfWork
for field at com.google.inject.persist.jpa.JpaLocalTxnInterceptor.unitOfWork(JpaLocalTxnInterceptor.java:36)
at com.google.inject.persist.jpa.JpaPersistModule.configurePersistence(JpaPersistModule.java:76)
2 errors
The code that i generating this error is:
install(new JpaPersistModule("theseen"));
filter("/*").through(PersistFilter.class);
If I use the "standard" way by instantiating a EntitiManager and uncommenting these lines, nothing happens.
EntityManagerFactory emf = Persistence
.createEntityManagerFactory("theseen");
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
em.merge(s);
em.getTransaction().commit();
works like a charm. So I think the setup if the database connection must be ok.
What could these to errors possibly be? I tested the same App on another test environment and it works! Both machines use Glassfish 3.1, Eclipse Indigo with m2eclipse and m2wtp integration. I use Guice 3.0 with guice-persist 3.0 and guice-servlet 3.0. The machine where the app is working runs Ubuntu 11.04 with OpenJDK, the machine where problems occure uses Windows 7 with JDK1.6v26. I normally use a Datasource provided by Glassfish, but even using a plain persistence.xml is not working.
I am seriously confused...
Any ideas what is wrong with Guice Injection for JPA?
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论
评论(1)
由于没有人回答,我就用了蛮力:
完全重新安装 Glassfish,WebApp 就可以工作了……
在我的本地计算机上进行长达数月的测试期间,某些东西一定已损坏。
Since nobody answered I went brute force:
Completely reinstall Glassfish and the WebApp worked...
Something must have been corrupted during the long months of testing here on my local machine.