移动查询

移动查询

 

移动查询

<% @ page contentType = " text/html;charset=GB2312 "   %>
<% @ page import = " java.sql.* "   %>
< HTML >
< BODY >
  <%  Connection con;
    Statement sql; 
    ResultSet rs;
    try
    {
      Class.forName( " com.microsoft.jdbc.sqlserver.SQLServerDriver " );
    }
    catch(ClassNotFoundException e)
    {
      out.print( " 类找不到！ " );
    }
    try 
    {  
         con = DriverManager.getConnection( " jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=testDatabse " , " sa " , " 6599996 " );
         sql = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);
         rs = sql.executeQuery( " SELECT * FROM userTable " );
         rs.last(); // 移动到最后一行
          int  rowNumber = rs.getRow(); // 得到最后一行的行号
         out.print( " <Table Border> " );
         out.print( " <TR><td colspan=8 align=center>用户数据(逆序输出，共 " + rowNumber + " 条记录)</td></tr> " );   
         out.print( " <TR> " );
            out.print( " <Td width=100 > " + " 用户ID号 " );
            out.print( " <Td width=50 > " + " 用户名 " );
            out.print( " <Td width=100> " + " 用户真实姓名 " );
            out.print( " <Td width=50> " + " 年龄 " );
            out.print( " <Td width=50> " + " 性别 " );
            out.print( " <Td width=100> " + " 联系地址 " );
            out.print( " <Td width=100> " + " 联系电话 " );
            out.print( " <Td width=100> " + " 添加时间 " );
         out.print( " </TR> " );
       rs.afterLast(); // 移动到最后一行的后面
        while (rs.previous())
       { out.print( " <TR> " );
             out.print( " <TD > " + rs.getLong( 1 ) + " </TD> " );
             out.print( " <TD > " + rs.getString( 2 ) + " </TD> " ); 
             out.print( " <TD > " + rs.getString( 4 ) + " </TD> " );
             out.print( " <TD > " + rs.getInt( " user_age " ) + " </TD> " ); 
             out.print( " <TD > " + rs.getString( " user_sex " ) + " </TD> " );
             out.print( " <TD > " + rs.getString( " user_address " ) + " </TD> " );
             out.print( " <TD > " + rs.getString( " user_telephone " ) + " </TD> " );
             out.print( " <TD > " + rs.getString( " add_time " ) + " </TD> " );
        out.print( " </TR> " ) ; 
        }
       rs.absolute( 2 ); // 移动到第2行
       out.print( " <TR><td colspan=8 align=center>指定输出第2个用户的数据</td></tr> " );
       out.print( " <TR> " );
             out.print( " <TD > " + rs.getLong( 1 ) + " </TD> " );
             out.print( " <TD > " + rs.getString( 2 ) + " </TD> " ); 
             out.print( " <TD > " + rs.getString( 4 ) + " </TD> " );
             out.print( " <TD > " + rs.getInt( " user_age " ) + " </TD> " ); 
             out.print( " <TD > " + rs.getString( " user_sex " ) + " </TD> " );
             out.print( " <TD > " + rs.getString( " user_address " ) + " </TD> " );
             out.print( " <TD > " + rs.getString( " user_telephone " ) + " </TD> " );
             out.print( " <TD > " + rs.getString( " add_time " ) + " </TD> " );
        out.print( " </TR> " ) ; 
        out.print( " </Table> " );
        con.close();
     }
   catch(SQLException e1) 
   {
      out.print( " SQL异常！ " );
   }
  %>
</ BODY >
</ HTML >