新维加斯武士刀在哪找:测试conn.jsp文件，出现错误怎么解决！

conn.jsp代码如下：
<%@ page language="java" import="java.sql.*" %>
<%Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=down";
//down is me database
String user="sa";
String password="123";
Connection conn=DriverManager.getConnection(url,user,password);
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
/*String sql="select * from authors";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next()){%>
第一个字段内容为：<%=rs.getString(2)%><br>
第二个字段内容为：<%=rs.getString(3)%><br>
<%}%>
<%out.print("op database success!");%>
<%rs.close();
stmt.close();
conn.close();
*/
%>
出现错误为：
javax.servlet.ServletException: [Microsoft][SQLServer 2000 Driver for JDBC]Error establishing socket.
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:825)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:758)
org.apache.jsp.comqingdownjsp.conn_jsp._jspService(conn_jsp.java:80)
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]Error establishing socket.
com.microsoft.jdbc.base.BaseExceptions.createException(Unknown Source)
com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
com.microsoft.jdbc.base.BaseExceptions.getException(Unknown Source)
com.microsoft.jdbc.sqlserver.tds.TDSConnection.<init>(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:512)
java.sql.DriverManager.getConnection(DriverManager.java:171)
org.apache.jsp.comqingdownjsp.conn_jsp._jspService(conn_jsp.java:50)
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
前提我装了sql server的驱动程序 也把那三个文件拷贝到了tomacat的相应目录下。