我把以下代码编译成Class文件放在WEB-INFclassessendmail_pkg  
 
package  sendmail_pkg;  
 
import  java.util.*;  
import  javax.mail.*;  
import  javax.mail.internet.InternetAddress;  
import  javax.mail.internet.MimeMessage;  
 
public  class  sendmail  
{  
 
       boolean  ok;  
       public  sendmail()  
       {  
               ok  =  false;  
       }  
 
       public  boolean  isSendOk(String  username,  String  pwd,  String  e_mail)  
       {  
               try  
               {  
                       String  sendStr  =  String.valueOf(String.valueOf((new  StringBuffer("你的用户名:")).append(username).append("      ").append("密码:").append(pwd)));  
                       Properties  props  =  new  Properties();  
                       Session  sendMailSession  =  Session.getInstance(props,  null);  
                       props.put("mail.smtp.host",  "smtp.163.com");  
                       props.put("mail.smtp.auth",  "true");  
                       Message  newMessage  =  new  MimeMessage(sendMailSession);  
                       newMessage.setFrom(new  InternetAddress("cdx257@163.com"));  
                       newMessage.setRecipient(javax.mail.Message.RecipientType.TO,  new  InternetAddress(e_mail));  
                       newMessage.setSubject("TEST");  
                       newMessage.setSentDate(new  Date());  
                       newMessage.setText(sendStr);  
                       Transport  transport  =  sendMailSession.getTransport("smtp");  
                       newMessage.saveChanges();  
                       transport.connect("smtp.163.com",  "cdx257",  "TESTTESET");  
                       transport.sendMessage(newMessage,  newMessage.getRecipients(javax.mail.Message.RecipientType.TO));  
                       transport.close();  
                       ok  =  true;  
                       throw  new  MessagingException("");  
               }  
               catch(MessagingException  e)  
               {  
                       ok  =  false;  
               }  
               return  ok;  
       }  
}  
 
 
可在JSP中调用时提示Undefined  variable  or  class  name:  sendMailBean  
                                   ok=sendMailBean.isSendOk(username,pwd,e_mail);  
                                         ^  
 
.......  
  
  
String  username="username";  
String  pwd="AAA",e_mail="cdx257@163.com";  
int  ID=0;boolean  ok=false;  
ok=sendMailBean.isSendOk(username,pwd,e_mail);  
.......  
 
可是connSqlBean以能正确的调用  
请问如何解决?(我重启过TOMCAT,重启过电脑还是一样的错,我的环境:JDK1.3+TOMCAT4.0+W2KSERVER)

  
是jsp:useBean不是userBean，粗心！