hibernate exception , help me~

zjlgigi 2004-04-02 12:07:13

java.lang.ClassFormatError: com/mysql/jdbc/MysqlIO (Bad index in constant pool #916)
java.lang.ClassLoader.defineClass0(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:509)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1653)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:883)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1333)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1213)
java.lang.ClassLoader.loadClassInternal(ClassLoader.java:322)
com.mysql.jdbc.Connection.createNewIO(Connection.java:1731)
com.mysql.jdbc.Connection.(Connection.java:562)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:361)
java.sql.DriverManager.getConnection(DriverManager.java:512)
java.sql.DriverManager.getConnection(DriverManager.java:140)
net.sf.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:95)
net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:71)
net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1091)
net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:737)
cforum.DBTool.CFGetConnection.getSessionFactory(CFGetConnection.java:46)
cforum.DBTool.UserDB.Reg(UserDB.java:34)
cforum.struts.Action.user.registerAction.execute(registerAction.java:56)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

...

why ???

...全文