Jquery+Ajax+Json+存储过程实现高效分页

之前在做分页时，很多朋友都是用jquery分页插件，之前我就用的jquery.paper，有需要的朋友可以联系我，接下来小编给大家分享用jquery+ajax+json+存储过程实现高效分页。

实现此功能用分页存储过程，pagination，js样式，废话不多了，具体请看下面代码

 分页存储过程：pagination

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

分页样式：

<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>

首先创建一般处理程序，读取数据库中内容，得到返回值.
创建文件，getdata.ashx.
我这里是用的存储过程，存储过程会再下面粘出来，至于数据只是实例，你们可根据需求自行读取数据

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; }

样式代码：

<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>

js代码

<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);
      }
    }

以上就是本文使用jquery+ajax+json+存储过程实现高效分页的全部内容，希望大家喜欢。