jsp连接sql2000 顽疾    在线等!!!!!
<%Class.forName( "com.microsoft.jdbc.sqlserver.SQLServerDriver ");    
 String   url= "jdbc:sqlserver://localhost:1433;DatabaseName=Student ";    
 //student为你的数据库的    
 String   user= "henson ";             
 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   student ";    
 ResultSet   rs=stmt.executeQuery(sql);    
 while(rs.next())   {%>     
   您的第一个字段内容为: <%=rs.getString(1)%>     
   您的第二个字段内容为: <%=rs.getString(2)%>     
    <%}%>     
    <%out.print( "数据库操作成功,恭喜你 ");%>     
    <%rs.close();    
                stmt.close();    
                conn.close(); 
 %>     
 用这个可以连接数据库输出数据,打了补丁sp3,放好了驱动文件在tomcat/common/lib中 
 package   student; 
 import   java.sql.*; 
 public   class   conn   { 
 	String   sDBDriver= "sun.jdbc.odbc.JdbcOdbcDriver "; 
 	String   sConnStr= "jdbc:odbc:student "; 
 	Connection   conn=null;       
 	ResultSet   rs=null;   
 	public   conn(){ 
 		try{ 
 			Class.forName(sDBDriver);    
 		}catch(
java.lang.ClassNotFoundException   e){  			
System.err.println(e.getMessage()); 
 		} 
 	} 
 	public   ResultSet   executeQuery(String   sql){ 
 		try{ 
 			conn=DriverManager.getConnection(sConnStr); 
 			Statement   stmt=conn.createStatement(); 
 			rs=stmt.executeQuery(sql); 
 		}catch(
SQLException   ex){ 
 			System.err.println(ex.getMessage()); 
 		} 
 		return   rs; 
 	} 
 } 
 这个可以连接到数据源,没有出现提示:[Microsoft][ODBC   驱动程序管理器]   
未发现数据源名称并且未指定默认驱动程序  究竟是什么问题呢?   在线等   
 最后一个Bebug:    
 Thread   [http-8080-1]   (Suspended   (exception   
NullPointerException))	 
 	ErrorDispatcher.createJavacError(String,   Node$Nodes,   StringBuffer,   int,   JspCompilationContext)   line:   526	 
 	JspServletWrapper.handle
JspException(Exception)   line:   453	 
 	JspServletWrapper.service(HttpServletRequest,   HttpServletResponse,   boolean)   line:   371	 
 	JspServlet.serviceJspFile(HttpServletRequest,   HttpServletResponse,   String,   Throwable,   boolean)   line:   315	 
 	JspServlet.service(HttpServletRequest,   HttpServletResponse)   line:   265	 
 	JspServlet(HttpServlet).service(ServletRequest,   ServletResponse)   line:   803	 
 	ApplicationFilterChain.internalDoFilter(ServletRequest,   ServletResponse)   line:   269	 
 	ApplicationFilterChain.doFilter(ServletRequest,   ServletResponse)   line:   188	 
 	StandardWrapperValve.invoke(Request,   Response)   line:   210	 
 	Standa