新手关于spring的一个异常，求助啊！！！

Question

新人刚刚学习SPRING，照着书上的结构写了一下自己的小程序，结果启动tomcat就报错，报错如下
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1338)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:423)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4206)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4705)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1079)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1002)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:506)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)
at org.apache.catalina.core.StandardService.start(StandardService.java:525)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
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.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:110)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructDefaultTuplizer(EntityTuplizerFactory.java:135)
at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:56)
at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:323)
at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:433)
at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:109)
at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:55)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:231)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1313)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:814)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:732)
at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
... 39 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.hibernate.tuple.entity.EntityTuplizerFactory.constructTuplizer(EntityTuplizerFactory.java:107)
... 52 more
Caused by: java.lang.NoSuchMethodError: org.objectweb.asm.ClassVisitor.visit(IILjava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)V
at net.sf.cglib.core.ClassEmitter.begin_class(ClassEmitter.java:77)
at net.sf.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:173)
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:117)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69)
at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:117)
at org.hibernate.proxy.pojo.cglib.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:43)
at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:188)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:128)
at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:78)
... 57 more
2013-10-28 23:18:16 org.apache.catalina.core.StandardContext start
严重: Error listenerStart
2013-10-28 23:18:16 org.apache.catalina.core.StandardContext start
严重: Context [/teachemanage] startup failed due to previous errors
2013-10-28 23:18:16 org.apache.catalina.core.ApplicationContext log
信息: Closing Spring root WebApplicationContext
2013-10-28 23:18:16 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
严重: The web application [/teachemanage] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
2013-10-28 23:18:16 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/teachemanage] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak.
2013-10-28 23:18:16 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
严重: The web application [/teachemanage] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak.
2013-10-28 23:18:16 org.apache.catalina.startup.HostConfig deployDirectory

Answer 1

我也明白可能是配置文件的错，但是配置文件和书上的一样呀<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="com.mysql.jdbc.Driver">
</property>
<property name="url" value="jdbc:mysql://localhost:3306/teachemanage"></property>
<property name="username" value="root"></property>
<property name="password" value="root"></property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource"/>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>com/sealy/entity/Teacher.hbm.xml</value>
<value>com/sealy/entity/Benkekecheng.hbm.xml</value>
<value>com/sealy/entity/Benkeadmin.hbm.xml</value></list>
</property>
</bean>
<!-- 定义UserDAOImpl类-->
<bean id="benkeadminDAO"  class="com.sealy.dao.impl.BenkeadminDAOImpl">
  <property name="sessionFactory"  ref="sessionFactory" />
</bean>
<!-- 定义UserBizImpl类,并为其属性userDAO注入值-->
<bean id="benkeadminBiz"  class="com.sealy.biz.impl.BenkeadminBizImpl">
  <property name="benkeadminDAO" ref="benkeadminDAO" />
</bean>
<!-- 定义UserAction，并为其属性userBiz注入值 -->
<bean name="benkeadmin" class="com.sealy.action.BenkeadminAction" scope="prototype">   
    <property name="benkeadminBiz" ref="benkeadminBiz" />
</bean>
</beans>

Answer 2

pojo和映射文件应该也没错的吧
package com.sealy.entity;/**
 * Benkeadmin entity. @author MyEclipse Persistence Tools
 */
public class Benkeadmin implements
java.io.Serializable { /**
 * 
 */
private static final long serialVersionUID = 1L;
// Constructors
private Integer id;
private String username;
private String password;
private String name;
/** default constructor */
public Benkeadmin() {
} /** full constructor */
public Benkeadmin(String username, String password, String name) {
this.username = username;
this.password = password;
this.name = name;
} public Integer getId() {
return id;
} public void setId(Integer id) {
this.id = id;
} public String getUsername() {
return username;
} public void setUsername(String username) {
this.username = username;
} public String getPassword() {
return password;
} public void setPassword(String password) {
this.password = password;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
}
}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- 
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="com.sealy.entity.Benkeadmin" table="benkeadmin" catalog="teachemanage">
        <id name="id" type="java.lang.Integer">
            <column name="id" />
            <generator class="native"></generator>
        </id>
        <property name="username" type="java.lang.String">
            <column name="username" length="20" not-null="true" />
        </property>
        <property name="password" type="java.lang.String">
            <column name="password" length="20" not-null="true" />
        </property>
        <property name="name" type="java.lang.String">
            <column name="name" length="10" not-null="true" />
        </property>
    </class>
</hibernate-mapping>各位大大求助啊！初学SPRING真心累啊！！！谢谢！！！！！！！

Answer 3

发现是由于Spring中的“asm-2.2.3.jar”和Hibernate中的“asm.jar”包冲突。
解决办法：移除Spring2.0 AOP Libraries中的“asm-2.2.3.jar”即可 
网上找的，自己试一下。

Answer 4

打开你的包，你看看是不是有两个：asm.jar 还有一个带版本号的。asm....jar把带版本号的那个删除掉，重新发布，重启。试试。

Answer 5

Unable to instantiate default tuplizer解决方法       今天在在用hbm文件和生成相应的数据表的时候，出现了Unable to instantiate default tuplizer这个错误，自己从网上查找了一下，并经过自己实践，是因为缺少包javassist.jar，添加后，就成功的生成了相应的数据表了！       也许导致出错的原因会很多，但上面也是会导致错误的一个原因，如果遇到这样的错误，可以先考虑一下是不是因为少了这个包的原因!!!