[英]Hibernate 4.2.2 session factory error
So i'm working on a project lately, i'm using hibernate with a mysql database. 所以最近我在做一个项目,我在用mysql数据库使用hibernate。
after setting things up, i wanted to test my dao, but when i run the test, i get this error : 设置完之后,我想测试dao,但是运行测试时,出现此错误:
log4j:WARN No appenders could be found for logger (org.jboss.logging).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.NoSuchFieldError: TRACE
at org.jboss.logging.Log4jLogger.translate(Log4jLogger.java:64)
at org.jboss.logging.Log4jLogger.isEnabled(Log4jLogger.java:39)
at org.jboss.logging.Logger.logv(Logger.java:1953)
at org.hibernate.internal.CoreMessageLogger_$logger.tracev(CoreMessageLogger_$logger.java:450)
at org.hibernate.cfg.EJB3DTDEntityResolver.resolveEntity(EJB3DTDEntityResolver.java:58)
at com.sun.org.apache.xerces.internal.util.EntityResolverWrapper.resolveEntity(EntityResolverWrapper.java:110)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.resolveEntityAsPerStax(XMLEntityManager.java:994)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(XMLDocumentScannerImpl.java:1154)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(XMLDocumentScannerImpl.java:1050)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:964)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
at org.dom4j.io.SAXReader.read(SAXReader.java:465)
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2067)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1987)
at example.Utils.SessionFactorySingleton.createSession(SessionFactorySingleton.java:19)
at example.Utils.SessionFactorySingleton.getSessionFactory(SessionFactorySingleton.java:30)
at example.dao.BookDaoImpl.<init>(BookDaoImpl.java:17)
at example.Main.main(Main.java:15)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
I already searched the net without finding a solution. 我已经在网上搜索,没有找到解决方案。 I feel like it's not really related to hibernate but i want to make sure.
我觉得这与休眠并不真正相关,但我想确定一下。
Here's my SessionFactorySingleton : 这是我的SessionFactorySingleton:
public class SessionFactorySingleton {
private static SessionFactory sessionFactory;
private static void createSession() {
try {
Configuration configuration = new Configuration();
configuration.configure("hibernate.cfg.xml");
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);
} catch (HibernateException he) {
System.err.println("Error creating Session: " + he);
throw new ExceptionInInitializerError(he);
}
}
public static SessionFactory getSessionFactory() {
if (sessionFactory == null)
createSession();
return sessionFactory;
}
}
Do you have any logging framework(/s) added to your project dependencies? 您是否在项目依赖项中添加了任何日志记录框架? May be this is a logger compatibility issue.
可能这是记录器兼容性问题。 Please review the logger added is compatible with Hibernate.
请检查添加的记录器与Hibernate兼容。
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