ECLIPSE下调试Spring例子jPetstore问题

reason001

我在ECLIPSE下调试JPetstore项目。启动TOMCAT后，输出如下错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlMapClient' defined in ServletContext resource [/WEB-INF/dataAccessContext-local.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.FatalBeanException: Could not instantiate class [org.springframework.orm.ibatis.SqlMapClientFactoryBean]; constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com.ibatis.sqlmap.engine.transaction.external.ExternalTransactionConfig
org.springframework.beans.FatalBeanException: Could not instantiate class [org.springframework.orm.ibatis.SqlMapClientFactoryBean]; constructor threw exception; nested exception is java.lang.NoClassDefFoundError: com.ibatis.sqlmap.engine.transaction.external.ExternalTransactionConfig
java.lang.NoClassDefFoundError: com.ibatis.sqlmap.engine.transaction.external.ExternalTransactionConfig at org.springframework.orm.ibatis.SqlMapClientFactoryBean.class$(SqlMapClientFactoryBean.java:65)
        at org.springframework.orm.ibatis.SqlMapClientFactoryBean.<init>;(SqlMapClientFactoryBean.java:65)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

如果不在ECLIPSE下启动TOMCAT的话，直接启动TOMCAT的话，JPetstore能够运行。

请问高手们，这是什么问题，如何解决。