休眠 slf4j 异常

Question

我打电话时遇到以下异常 configuration.configure(hibernate.cfg.xml).buildSessionFactory():

Exception in thread "main" java.lang.NoSuchMethodError: org.slf4j.Logger.isTraceEnabled()Z
    at org.hibernate.type.NullableType.<clinit>(NullableType.java:59)
    at org.hibernate.Hibernate.<clinit>(Hibernate.java:103)
    at org.hibernate.type.TypeFactory.<clinit>(TypeFactory.java:69)
    at org.hibernate.mapping.ManyToOne.getType(ManyToOne.java:49)
    at org.hibernate.mapping.ManyToOne.createForeignKey(ManyToOne.java:62)
    at org.hibernate.cfg.HbmBinder.createProperty(HbmBinder.java:2213)
    at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2170)
    at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2060)
    at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:381)
    at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:295)
    at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:166)
    at org.hibernate.cfg.Configuration.add(Configuration.java:702)
    at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:537)
    at org.hibernate.cfg.Configuration.addResource(Configuration.java:599)
    at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1621)
    at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1589)
    at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1568)
    at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1542)
    at org.hibernate.cfg.Configuration.configure(Configuration.java:1462)
    at com.enwelib.server.hibernate.helper.HibernateVendHelper.<init>(HibernateVendHelper.java:47)
    at com.ensarm.crawler.CrawlManager.saveEntity(CrawlManager.java:93)
    at com.ensarm.crawler.CrawlManager.main(CrawlManager.java:30)

Answer 1

Logger.isTraceEnabled() 方法是在slf4j 1.4 中添加的。显然，您使用的是较旧的版本，而 Hibernate 需要更新的版本。修改您的 CLASSPATH 并使用此库的更新版本（当前为 1.6.4）。