我想用最新的hibernate、hibernate-annotations和ehcache依赖更新我的Maven pom.xml文件。
我阅读了hibernate下载页面和ehcache下载页面。我尝试理解它们,但都失败了。有人能写出应该放入pom.xml文件中的片段吗?
神秘的hibernate下载页面: http://hibernate.org/downloads
神秘的ehcache下载页面: http://www.terracotta.org/dl/ehcache-oss-download-catalog
以下是我目前拥有的:
<properties>
<hibernate.version>3.6.0.Final</hibernate.version>
</properties>
<dependencies>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
<exclusions>
<exclusion>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
</exclusion>
<exclusion>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>${hibernate.version}</version>
<exclusions>
<exclusion>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>2.2.0</version>
<type>pom</type>
</dependency>
</dependencies>
<repositories>
<repository>
<id>codehaus-repository</id>
<name>Codehaus</name>
<url>https://nexus.codehaus.org/content/repositories/releases/</url>
<layout>default</layout>
</repository>
<repository>
<id>java.net</id>
<url>http://download.java.net/maven/1</url>
<layout>legacy</layout>
</repository>
<repository>
<id>central</id>
<name>Maven Repository Switchboard</name>
<layout>default</layout>
<url>http://repo1.maven.org/maven2</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>sonatype-ehcache</id>
<url>http://oss.sonatype.org/content/repositories/sourceforge-releases</url>
<layout>default</layout>
</repository>
<repository>
<id>JBoss Repository</id>
<url>https://repository.jboss.org/nexus/content/groups/public</url>
<layout>default</layout>
</repository>
</repositories>
我知道,这看起来像一团乱麻,因为我似乎无法确定所有依赖项的存储位置。
上述内容失败的原因是:
Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:328)
更新: Pascal,你的回复非常清晰并且解释得很好。但是,Hibernate仍然在启动时失败。
sl4j报错,通过添加以下内容解决:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.1</version>
</dependency>
有许多这种警告的实例:
g in the two-phase commit!
1797 [main] WARN net.sf.ehcache.hibernate.AbstractEhcacheRegionFactory - No Tr
ansactionManagerLookup found in Hibernate config, XA Caches will be participatin
此外,这个错误会导致一切失败:
相关原因:
org.springframework.beans.factory.BeanCreationException: Error creating bean wit
h name 'financialDAO' defined in ServletContext resource [/WEB-INF/config/applic
ationContext-database.xml]: Cannot resolve reference to bean 'transactionManager
' while setting bean property 'transactionManager'; nested exception is org.spri
ngframework.beans.factory.BeanCreationException: Error creating bean with name '
transactionManager' defined in ServletContext resource [/WEB-INF/config/applicat
ionContext-database.xml]: Cannot resolve reference to bean 'sessionFactory' whil
e setting bean property 'sessionFactory'; nested exception is org.springframewor
k.beans.factory.BeanCreationException: Error creating bean with name 'sessionFac
tory' defined in ServletContext resource [/WEB-INF/config/applicationContext-dat
abase.xml]: Invocation of init method failed; nested exception is java.lang.Null
PointerException
at org.springframework.beans.factory.support.BeanDefinitionValueResolver
.resolveReference(BeanDefinitionValueResolver.java:328)
确认一下,这是 Spring 的配置: <!-- Enable EHCache -->
<prop key="hibernate.cache.use_second_level_cache">true</prop>
<prop key="hibernate.cache.use_query_cache">false</prop>
<prop key="hibernate.cache.region.factory_class">net.sf.ehcache.hibernate.EhCacheRegionFactory</prop>
<prop key="net.sf.ehcache.configurationResourceName">/ehcache.xml</prop>
更新: 这似乎是Hibernate陷入困境的最新异常:
Caused by: java.lang.NullPointerException
at net.sf.ehcache.hibernate.HibernateUtil.loadAndCorrectConfiguration(HibernateUtil.java:48)
at net.sf.ehcache.hibernate.EhCacheRegionFactory.start(EhCacheRegionFactory.java:79)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:236)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1842)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:855)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:774)
at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1469)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1409)