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testsqlserver.jsp如下: 
<%@ page contentType="text/html;charset=gb2312"%> 
<%@ page import="java.sql.*"%> 
<html> 
<body> 
<%Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance(); 
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=pubs"; 
String user="sa"; 
String password=""; 
Connection conn= DriverManager.getConnection(url,user,password); 
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); 
String sql="select * from jobs"; 
ResultSet rs=stmt.executeQuery(sql); 
while(rs.next()) {%> 
您的第一个字段内容为： <%=rs.getString(1)%>  <br> 
您的第二个字段内容为： <%=rs.getString(2)%>  <br> 
<%}%> 
<%out.print("数据库操作成功，恭喜你");%> 
<%rs.close(); 
stmt.close(); 
conn.close(); 
%> 
</body> 
</html> 这是源代码，为什么我运行以后就出现了如下的错误了，恳请高手指点！！ 
javax.servlet.ServletException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]用户 'sa' 登录失败。 
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825) 
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758) 
org.apache.jsp.sql_005ftest_jsp._jspService(sql_005ftest_jsp.java:82) 
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.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]用户 'sa' 登录失败。 
com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source) 
com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source) 
com.microsoft.jdbc.sqlserver.tds.TDSRequest.processErrorToken(Unknown Source) 
com.microsoft.jdbc.sqlserver.tds.TDSRequest.processReplyToken(Unknown Source) 
com.microsoft.jdbc.sqlserver.tds.TDSLoginRequest.processReplyToken(Unknown Source) 
com.microsoft.jdbc.sqlserver.tds.TDSRequest.processReply(Unknown Source) 
com.microsoft.jdbc.sqlserver.SQLServerImplConnection.open(Unknown Source) 
com.microsoft.jdbc.base.BaseConnection.getNewImplConnection(Unknown Source) 
com.microsoft.jdbc.base.BaseConnection.open(Unknown Source) 
com.microsoft.jdbc.base.BaseDriver.connect(Unknown Source) 
java.sql.DriverManager.getConnection(DriverManager.java:582) 
java.sql.DriverManager.getConnection(DriverManager.java:185) 
org.apache.jsp.sql_005ftest_jsp._jspService(sql_005ftest_jsp.java:52) 
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) 
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