为什么数据库连接上去,显示这种错误是什么意思??

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: com.microsoft.jdbc.sqlserver.SQLServerDriver
 org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
 org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
 org.apache.jsp.untitled_jsp._jspService(untitled_jsp.java:93)
 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.ClassNotFoundException: com.microsoft.jdbc.sqlserver.SQLServerDriver
 org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1340)
 org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1189)
 org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:148)
 org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:69)
 java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
 java.lang.Class.forName0(Native Method)
 java.lang.Class.forName(Class.java:141)
 org.apache.jsp.untitled_jsp._jspService(untitled_jsp.java:54)
 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)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

[此贴子已经被作者于2006-2-28 14:58:57编辑过]