404内部Tomcat疏失，更换tomcat，但深层原因是什么
页面：
HTTP Status 404 - /shiyan/
--------------------------------------------
type Status report
message /shiyan/
description The requested resource (/shiyan/) is not available.
控制台：
1.
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
ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation
of init method failed; nested exception is
org.hibernate.HibernateException: Unable to instantiate default
tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
2.Caused
by: org.hibernate.HibernateException: Unable to instantiate default
tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
3.Caused by: java.lang.reflect.InvocationTargetException
4.Caused
by: java.lang.NoSuchMethodError:
org.objectweb.asm.ClassVisitor.visit(IILjava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)V
5.2011-6-24 17:05:44 org.apache.catalina.core.StandardContext start
严重: Error listenerStart
2011-6-24 17:05:44 org.apache.catalina.core.StandardContext start
严重: Context [/bspdemo] startup failed due to previous errors
2011-6-24 17:05:44 org.apache.catalina.core.ApplicationContext log
信息: Closing Spring root WebApplicationContext
2011-6-24 17:05:46 org.apache.catalina.loader.WebappClassLoader loadClass
信
息: Illegal access: this web application instance has been stopped
already. Could not load java.net.HttpURLConnection. The eventual
following stack trace is caused by an error thrown for debugging
purposes as well as to attempt to terminate the thread which caused the
illegal access, and has no functional impact.
java.lang.IllegalStateException
6.
信息: Illegal access: this web application instance has been stopped
already. Could not load org.apache.xerces.impl.dtd.XMLNotationDecl.
The eventual following stack trace is caused by an error thrown for
debugging purposes as well as to attempt to terminate the thread which
caused the illegal access, and has no functional impact.
7.严重: Error deploying web application directory shiyan
java.lang.NoClassDefFoundError: org/apache/xerces/impl/dtd/XMLNotationDecl
8.严重: Error deploying web application directory Show3DHouse
java.lang.NoClassDefFoundError: org/apache/xerces/impl/dtd/XMLNotationDecl
9.严重: Error deploying web application directory Unity3DHouse
java.lang.NoClassDefFoundError: org/apache/xerces/impl/dtd/XMLNotationDec
我的异常网推荐解决方案：org.springframework.beans.factory.BeanCreationException:,http://www..net/j2ee/10759.html
我的异常网推荐解决方案：Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer],http://www..net/eclipse/174629.html