一个数据库连接问题！

代码：
<%@ 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=mydb";
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 test";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next()){%>
第一个字段内容为：<%=rs.getString(1) %>
第二个字段内容为: <%= rs.getString(2) %>
<%}%>
<% out.print("数据库操作成功，恭喜你"); %>
<%
rs.close();
stmt.close();
conn.close();
%>
</body>
</html>
错误提示：
org.apache.jasper.JasperException: An exception occurred processing JSP page /connection.jsp at line 107: String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb";
8: String user="sa";
9: String password="";
10: Connection conn=DriverManager.getConnection(url,user,password);
11: Statement
12: stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
13: String sql="select*from test";
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:515)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:408)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)root causejavax.servlet.ServletException: java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]用户 'sa' 登录失败。原因: 未与信任 SQL Server 连接相关联。
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:855)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:784)
org.apache.jsp.connection_jsp._jspService(connection_jsp.java:96)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)root causejava.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer]用户 'sa' 登录失败。原因: 未与信任 SQL Server 连接相关联。
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:525)
java.sql.DriverManager.getConnection(DriverManager.java:171)
org.apache.jsp.connection_jsp._jspService(connection_jsp.java:63)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)