tomcat应用问题，appfuse问题,ant   问题

我学习appfuse   用Ant   建的的工程，在我的同学的tomcat   里就可以用，但是在我的tomcat里就是不行，我的jdk刚开始用jdk6.0，后来用jdk5.0，tomcat5.0，后来用tomcat6.0，出现的都是一个错误：如下：
      2007-8-7   8:15:28   org.apache.catalina.startup.Catalina   start
信息:   Server   startup   in   26188   ms
2007-8-7   8:15:36   org.apache.catalina.core.StandardHostDeployer   start
信息:   standardHost.start   /myapp
2007-8-7   8:15:36   org.apache.catalina.core.StandardContext   start
信息:   Container   StandardContext[/myapp]   has   already   been   started
[myapp]   WARN   [http-8080-Processor25]   JDBCExceptionReporter.logExceptions(71)   |   S
QL   Error:   1267,   SQLState:   HY000
[myapp]   ERROR   [http-8080-Processor25]   JDBCExceptionReporter.logExceptions(72)   |
Illegal   mix   of   collations   (latin1_swedish_ci,IMPLICIT)   and   (utf8_general_ci,COER
CIBLE)   for   operation   '= '
[myapp]   WARN   [http-8080-Processor25]   LoggerListener.onApplicationEvent(55)   |   Aut
hentication   event   AuthenticationFailureServiceExceptionEvent:   tomcat;   details:   o
rg.acegisecurity.ui.WebAuthenticationDetails@fffd148a:   RemoteIpAddress:   127.0.0.
1;   SessionId:   CC33E25100AAE3B9E6BC8FFF051E146A;   exception:   JDBC   exception   on   Hib
ernate   data   access;   nested   exception   is   org.hibernate.exception.GenericJDBCExcep
tion:   could   not   execute   query;   nested   exception   is   org.springframework.orm.hiber
nate3.HibernateJdbcException:   JDBC   exception   on   Hibernate   data   access;   nested   ex
ception   is   org.hibernate.exception.GenericJDBCException:   could   not   execute   query
我不知道怎么解决，急求！！！

怎么解决，我想知道啊！！！