一个很细微的异常java.lang.reflect.InvocationTargetException

今天做的一个项目的过程中，突然出现出现这样的一个错误

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

java.lang.reflect.InvocationTargetException
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441)
	com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280)
	com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:243)

....//中间一部分代码省略掉了

root cause

java.lang.NoClassDefFoundError: Could not initialize class com.db.HibernateUtil
	com.dao.DeptDao.queryDepts(DeptDao.java:28)
	com.dao.DeptDao.isLeaf(DeptDao.java:63)
	com.web.DeptTreeAction.deptEmps(DeptTreeAction.java:92)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441)
	com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280)

.....//部分代码省略掉了

    起初并不知道是什么，因为这里面显示的是

com.db.HibernateUtil 

    这个自己写的类的问题，我感觉不对，因为我今天没有去改过，还是好好的

    网上查了好久没有找到解决的办法。

    很多人说是导包的问题，或是Tomcat的问题

 

    所有的数据库操作都出现问题，就直接不用前台的交互，用自己的Junit写的测试类来测，发现

java.lang.ExceptionInInitializerError
	at com.dao.DeptDao.queryDepts(DeptDao.java:28)
	at test.DeptTest.deptTest(DeptTest.java:16)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
	at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from resource com/model/NoteInfo.hbm.xml
	at org.hibernate.cfg.Configuration.addResource(Configuration.java:602)
	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 org.hibernate.cfg.Configuration.configure(Configuration.java:1448)
	at com.db.HibernateUtil.<clinit>(HibernateUtil.java:18)
	... 26 more
Caused by: org.hibernate.PropertyNotFoundException: field [receiversId] not found on com.model.NoteInfo
	at org.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:145)
	at org.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:137)
	at org.hibernate.property.DirectPropertyAccessor.getGetter(DirectPropertyAccessor.java:160)
	at org.hibernate.util.ReflectHelper.getter(ReflectHelper.java:106)
	at org.hibernate.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:94)
	at org.hibernate.mapping.SimpleValue.setTypeUsingReflection(SimpleValue.java:302)
	at org.hibernate.cfg.HbmBinder.createProperty(HbmBinder.java:2193)
	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)
	... 33 more

    从这里，很清楚的找到了问题的所在

   出现问题的地方是：因为今天在jodo中，被我改了一个属性的名字，映射文件忘记改过了而导致的

 

   我在想出现这种问题的原因应该很多，但我这里写的也只是我自己碰到的问题，也提供个参改吧。呵呵