发送email的问题

Question

最近在做一个收发电子邮件的程序，用了Tomcat和SQL Server2000，但就是发不出去邮件，郁闷的很啊，总是出现下面的提示信息，哪位帮忙指点下java.lang.NoClassDefFoundError: javax/activation/DataSource谁有完整的发送邮件的程序，让我参考下，十分感谢

Answer 1

从 http://java.sun.con/products/javamail/ 下载类，后者从 http://java.sun.com/beans/glasgow/jaf.html 取得javabean Activation Framework. 下载且打开这两个库后，从JavaMail拷贝mail.jar文件，从Activation Framework复制activation.jar文件将mail.jar 和 activation.jar 拷贝到 jsp发布目录的“WEB-INF/lib/”下面

Answer 2

已经加进去了啊，但是还是会出现下面的错误提示：exception javax.servlet.ServletException: javax/activation/DataSource
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:846)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
     org.apache.jsp.send_jsp._jspService(send_jsp.java:179)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause java.lang.NoClassDefFoundError: javax/activation/DataSource
     org.apache.jsp.send_jsp._jspService(send_jsp.java:125)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)