在编写junit调用hibernate进行数据库操作会提示以下错误
1 java.lang.ExceptionInInitializerError 2 at com.sisi.registration.service.UserManager.exists(UserManager.java:11) 3 at com.sisi.registration_service.UserManagerTest.testExists(UserManagerTest.java:17) 4 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 5 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 6 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 7 at java.lang.reflect.Method.invoke(Method.java:597) 8 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) 9 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) 10 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) 11 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) 12 at org.junit.runners.BlockJUnit4ClassRunner.runNotIgnored(BlockJUnit4ClassRunner.java:79) 13 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:71) 14 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49) 15 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) 16 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) 17 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) 18 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) 19 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) 20 at org.junit.runners.ParentRunner.run(ParentRunner.java:236) 21 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) 22 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 23 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 24 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 25 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 26 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 27 Caused by: org.hibernate.HibernateException: Could not parse configuration: /hibernate.cfg.xml 28 at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1542) 29 at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:1035) 30 at org.hibernate.cfg.AnnotationConfiguration.doConfigure(AnnotationConfiguration.java:64) 31 at org.hibernate.cfg.Configuration.configure(Configuration.java:1476) 32 at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:1017) 33 at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:64) 34 at org.hibernate.cfg.Configuration.configure(Configuration.java:1462) 35 at org.hibernate.cfg.AnnotationConfiguration.configure(AnnotationConfiguration.java:1011) 36 at com.sisi.registration.util.HibernateUtil.<clinit>(HibernateUtil.java:9) 37 ... 25 more 38 Caused by: org.dom4j.DocumentException: hibernate.sourceforge.Net Nested exception: hibernate.sourceforge.Net 39 at org.dom4j.io.SAXReader.read(SAXReader.java:484) 40 at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1532) 41 ... 33 more
问题根本：因为hibernate的两个配置文件分别都会默认去配置文件上面两个加粗的网站去找，所以当使用hibernate进行数据库操作时，如果你的
网络环境不好或者没联网，此时配置文件无法访问指定的dtd验证文件，所以才会出现xml无法解析的异常
解决办法：
1.在使用hibernate的项目下创建文件夹将hibernate-configuration-3.0.dtd文件和hibernate-mapping-3.0.dtd两个文件放在里面
2.并且把hibernate.cfg.xml文件头部分改为
1 <?xml version='1.0' encoding='UTF-8'?> 2 <!DOCTYPE hibernate-configuration PUBLIC 3 "-//Hibernate/Hibernate Configuration DTD 3.0//EN" 4 "dtd/hibernate-configuration-3.0.dtd"> 5 6 <!-- Generated by MyEclipse Hibernate Tools. 这里dtd是我创建的文件名 -->
下载地址：
hibernate-mapping-3.0.dtd ： http://download.csdn.net/detail/congwiny/7047309
hibernate-configuration-3.0.dtd ： http://download.csdn.net/download/dielianhua813/4070917
最后重启myeclipse调用junit，OK了！