基于jQuery、Ajax与存储过程的高效分页实现方案

CREATE PROCEDURE [dbo].[PAGINATION] 
 @FEILDS VARCHAR(),--要显示的字段
 @PAGE_INDEX INT,--当前页码
 @PAGE_SIZE INT,--页面大小
 @ORDERTYPE BIT,--当为时 则为 desc 当为 时 asc
 @ANDWHERE VARCHAR()='',--where语句 不用加where
 @ORDERFEILD VARCHAR(), --排序的字段
 @TABLENAME VARCHAR() --查询的表明
 as
 DECLARE @EXECSQL VARCHAR()
 DECLARE @ORDERSTR VARCHAR()
 DECLARE @ORDERBY VARCHAR()
 BEGIN
   set NOCOUNT on
   IF @ORDERTYPE = 
     BEGIN
       SET @ORDERSTR = ' > ( SELECT MAX(['+@ORDERFEILD+'])'
       SET @ORDERBY = 'ORDER BY '+@ORDERFEILD+' ASC'
     END
   ELSE 
     BEGIN
       SET @ORDERSTR = ' < ( SELECT MIN(['+@ORDERFEILD+'])'
       SET @ORDERBY = 'ORDER BY '+@ORDERFEILD+' DESC'
     END
   IF @PAGE_INDEX = --当页码是第一页时直接运行，提高速度
     BEGIN
       IF @ANDWHERE=''
         SET @EXECSQL = 'SELECT TOP '+STR(@PAGE_SIZE)+' '+@FEILDS+' FROM '+@TABLENAME+' '+@ORDERBY
       ELSE
         SET @EXECSQL = 'SELECT TOP '+STR(@PAGE_SIZE)+' '+@FEILDS+' FROM '+@TABLENAME+' WHERE '+@ANDWHERE+' '+ @ORDERBY
     END
   ELSE
     BEGIN
       IF @ANDWHERE=''
         BEGIN   --以子查询结果当做新表时 要给表名别名才能用
           SET @EXECSQL = 'SELECT TOP'+STR(@PAGE_SIZE)+' '+@FEILDS+' FROM '+@TABLENAME+' WHERE '+@ORDERFEILD+
                 @ORDERSTR+' FROM (SELECT TOP '+STR(@PAGE_SIZE*(@PAGE_INDEX-))+' '+@ORDERFEILD+
                 ' FROM '+@TABLENAME+' '+@ORDERBY+') AS TEMP) '+ @ORDERBY
         END
       ELSE
         BEGIN
           SET @EXECSQL = 'SELECT TOP'+STR(@PAGE_SIZE)+' '+@FEILDS+' FROM '+@TABLENAME+' WHERE '+@ORDERFEILD+
                 @ORDERSTR+' FROM (SELECT TOP '+ STR(@PAGE_SIZE*(@PAGE_INDEX-))+' '+@ORDERFEILD+
                 ' FROM '+@TABLENAME+' WHERE '+@ANDWHERE+' '+@ORDERBY+') AS TEMP) AND '+@ANDWHERE+' '+ @ORDERBY
         END
     END
 EXEC (@EXECSQL)--这里要加括号
 END

<style type="text/css">
a,area  { -moz-outline-style: none; blr:expression(this.onFocus=this.blur()); text-decoration:none} 
div.badoo { padding:px; text-align:center; }
div.badoo a { border:px solid #ededed; padding:px px; color:#; border-radius:px; margin-right:px;}
div.badoo a:hover {border:px solid #ffa; color: #ffa; }
div.badoo a:active {border:px solid #ffa; margin-right:px;}
div.badoo span { border:px solid #EDEDED; padding:px px; color:#f;font-weight:bold; background:#FAFAFA; border-radius:px; margin-right:px;}
div.badoo span.disabled { border:px solid #EDEDED; padding:px px; color:#; margin-right:px; font-weight:;}
</style>

using System;
using System.Web;
using System.Data.SqlClient;
using System.Data;
using System.Collections.Generic;
using System.Web.Script.Serialization;
using Model;

context.Response.ContentType = "text/plain";
      var pageIndex = context.Request["PageIndex"];
      //判断当前索引存不存在，如果不存在则获取记录的总数。
      if (string.IsNullOrEmpty(pageIndex))
      {
        //获取查询记录总数的sql语句
        int count = ;
        int.TryParse(new BLL.t_profit().SelectAllNum(), out count);
        context.Response.Write(count);
        context.Response.End();
      }
      //当根据索引获取数据
      else
      {
        int currentPageIndex = ;
        int.TryParse(pageIndex, out currentPageIndex);
        SqlParameter[] parms = new SqlParameter[] { 
    new SqlParameter("@FEILDS",SqlDbType.NVarChar,),
    new SqlParameter("@PAGE_INDEX",SqlDbType.Int,),
    new SqlParameter("@PAGE_SIZE",SqlDbType.Int,),
    new SqlParameter("@ORDERTYPE",SqlDbType.Int,),
    new SqlParameter("@ANDWHERE",SqlDbType.VarChar,),
    new SqlParameter("@ORDERFEILD",SqlDbType.VarChar,)
    };
        parms[].Value = "id,name,sex,tel";//获取所有的字段
        parms[].Value = pageIndex;//当前页面索引
        parms[].Value = ;//页面大小
        parms[].Value = ;//升序排列
        parms[].Value = "";//条件语句
        parms[].Value = "id";//排序字段
        List<Book> list = new List<Book>();
        using (SqlDataReader sdr = Yoodor.DAL.SqlHelper.ExecuteReader(CommandType.StoredProcedure, "PAGINATION", parms))
        {
          while (sdr.Read())
          {
            list.Add(new Book { id = sdr[].ToString(), name = sdr[].ToString(), sex = sdr[].ToString(), tel = sdr[].ToString() });
          }
        }
        context.Response.Write(new JavaScriptSerializer().Serialize(list).ToString());//转为Json格式
      }


 public string id { get; set; }
    public string name { get; set; } 
    public string sex { get; set; }
    public string tel { get; set; }

<style type="text/css">
a,area  { -moz-outline-style: none; blr:expression(this.onFocus=this.blur()); text-decoration:none} 
div.badoo { padding:px; text-align:center; }
div.badoo a { border:px solid #ededed; padding:px px; color:#; border-radius:px; margin-right:px;}
div.badoo a:hover {border:px solid #ffa; color: #ffa; }
div.badoo a:active {border:px solid #ffa; margin-right:px;}
div.badoo span { border:px solid #EDEDED; padding:px px; color:#f;font-weight:bold; background:#FAFAFA; border-radius:px; margin-right:px;}
div.badoo span.disabled { border:px solid #EDEDED; padding:px px; color:#; margin-right:px; font-weight:;}
</style>

<script type="text/javascript">
    $(function () {
      $.post("GetData.ashx", null, function (data) {
        var total = data;
        PageClick(, total, );
      });
      PageClick = function (pageIndex, total, spanInterval) {
        $.ajax({
          url: "GetData.ashx",
          data: { "PageIndex": pageIndex },
          type: "post",
          dataType: "json",
          success: function (data) {
            //索引从开始
            //将当前页索引转为int类型
            var intPageIndex = parseInt(pageIndex);
            //获取显示数据的表格
            var table = $("#content");
            //清楚表格中内容
            $("#content tr").remove();
            //向表格中添加内容
            for (var i = ; i < data.length; i++) {
              table.append(
                $("<tr><td>" +
                data[i].id
                + "</td><td>" +
                data[i].name
                + "</td><td>" +
                data[i].sex
                + "</td><td>" +
                data[i].tel
                + "</td></tr>")
                );
            } //for
            //创建分页
            //将总记录数结果 得到 总页码数
            var pageS = total
            if (pageS % == ) pageS = pageS / ;
            else pageS = parseInt(total / ) + ;
            var $pager = $("#pager");
            //清楚分页div中的内容
            $("#pager span").remove();
            $("#pager a").remove();
            //添加第一页
            if (intPageIndex == ) {
            //  $pager.append("<span class='disabled'>第一页</span>");
            }
            else {
            //  var first = $("<a href='javascript:void()' first='" + + "'>第一页</a>").click(function () {
             //   PageClick($(this).attr('first'), total, spanInterval);
             //   return false;
            //  });
            //  $pager.append(first);
            }
            //添加上一页
            if (intPageIndex == )
              $pager.append("<span class='disabled'>上一页</span>");
            else {
              var pre = $("<a href='javascript:void()' pre='" + (intPageIndex - ) + "'>上一页</a>").click(function () {
                PageClick($(this).attr('pre'), total, spanInterval);
                return false;
              });
              $pager.append(pre);
            }
            //设置分页的格式 这里可以根据需求完成自己想要的结果
            var interval = parseInt(spanInterval); //设置间隔
            var start = Math.max(, intPageIndex - interval); //设置起始页
            var end = Math.min(intPageIndex + interval, pageS)//设置末页
            if (intPageIndex < interval + ) {
              end = ( * interval + ) > pageS ? pageS : ( * interval + );
            }
            if ((intPageIndex + interval) > pageS) {
              start = (pageS - * interval) < ? : (pageS - * interval);
            }
            //生成页码
            for (var j = start; j < end + ; j++) {
              if (j == intPageIndex) {
                var spanSelectd = $("<span class='current'>" + j + "</span>");
                $pager.append(spanSelectd);
              } //if 
              else {
                var a = $("<a href='javascript:void()'>" + j + "</a>").click(function () {
                  PageClick($(this).text(), total, spanInterval);
                  return false;
                });
                $pager.append(a);
              } //else
            } //for
            //上一页
            if (intPageIndex == Math.ceil(total / )) {
              $pager.append("<span class='disabled'>下一页</span>");
            }
            else {
              var next = $("<a href='javascript:void()' next='" + (intPageIndex + ) + "'>下一页</a>").click(function () {
                PageClick($(this).attr("next"), total, spanInterval);
                return false;
              });
              $pager.append(next);
            }
            //最后一页
            if (intPageIndex == pageS) {
            //  $pager.append("<span class='disabled'>最后一页</span>");
            }
            else {
             // var last = $("<a href='javascript:void()' last='" + pageS + "'>最后一页</a>").click(function () {
              //  PageClick($(this).attr("last"), total, spanInterval);
             //   return false;
            //  });
             // $pager.append(last);
            }
          } //sucess
        }); //ajax
      }; //function
    });  //ready
  </script>
<table id="content">
</table>
<div id="pager" class="badoo"></div>
 /// <summary>
    /// Execute a SqlCommand that returns a resultset against the database specified in the connection string 
    /// using the provided parameters.
    /// </summary>
    /// <param name="connectionString">一个有效的数据库连接字符串</param>
    /// <param name="cmdType">SqlCommand命令类型 (存储过程， T-SQL语句， 等等。)</param>
    /// <param name="cmdText">存储过程的名字或者 T-SQL 语句</param>
    /// <param name="commandParameters">以数组形式提供SqlCommand命令中用到的参数列表</param>
    /// <returns>A SqlDataReader containing the results</returns>
    public static SqlDataReader ExecuteReader( CommandType cmdType, string cmdText, params SqlParameter[] commandParameters)
    {
      SqlCommand cmd = new SqlCommand();
      SqlConnection conn = new SqlConnection(connectionString);
      // we use a try/catch here because if the method throws an exception we want to 
      // close the connection throw code, because no datareader will exist, hence the 
      // commandBehaviour.CloseConnection will not work
      try
      {
        PrepareCommand(cmd, conn, null, cmdType, cmdText, commandParameters);
        SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
        cmd.Parameters.Clear();
        return rdr;
      }
      catch (Exception ex)
      {
        conn.Close();
        throw new Exception(ex.Message);
      }
    }