jQuery+存储过程实现无刷新分页（九）
涉及到得知识点：
1.分页存储过程
2.分页原理
3.jQuery DOM操作
4.jQuery Ajax存取数据
效果图：
思路：数据库---DAL----BLL----UI
具体代码：
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
CREATE PROCEDURE [dbo].[GetDataByPager]
(
@startIndex INT,--代表起始条数(从0开始)
@tableName VARCHAR(50),--代表分页的表名称
@pageSize INT=5,--代表每页的条数
@condition VARCHAR(1000)='1=1',--代表条件
@key VARCHAR(20)='id', --代表主键
@orderType VARCHAR(20)='desc' --代表排序方式
)AS
BEGIN
DECLARE @SQL VARCHAR(1000)
SET @SQL='select TOP ' +CONVERT(VARCHAR(20),@pagesize)+' * FROM '+@tableName
+' WHERE '+ @condition+' and '+@key+' NOT IN(SELECT TOP ' +CONVERT(VARCHAR(20),@startIndex)+' '+@key+' FROM '+@tableName+' where '+@condition+' order by '+@key+' '+@orderType+') order by '+@key+' '+@orderType
EXEC(@SQL)
END
set ANSI_NULLS ON set QUOTED_IDENTIFIER ON go --得到要分页的表的总记录数 CREATE PROCEDURE [dbo].[GetDataByPager_Count] ( @tableName VARCHAR(200), @condition VARCHAR(1000)='1=1' ) AS BEGIN DECLARE @strsql VARCHAR(2000) SET @strsql = 'select count(*) from '+@tableName+' where '+@condition EXEC(@strsql) END
DAL层：
public static partial class AuthorService
{
/// <summary>
/// 分页取数据
/// </summary>
/// <param name="start">起始记录数（从1开始)</param>
/// <param name="limit">每页的条数</param>
/// <param name="condition">查询条件</param>
/// <returns></returns>
public static IList<Author> GetAuthorByPager(int start, int limit, string condition)
{
//string strsql = string.Format("Exec GetDataByPager2 {0},'{1}',{2},'{3}'", start, limit, condition);
string strsql = string.Format("Exec GetDataByPager {0},'{1}',{2},'{3}'", start - 1, "Author", limit, condition);
return GetAuthorsBySql(strsql);
}
/// <summary>
/// 条件查询结果集数目
/// </summary>
/// <param name="condition">条件</param>
/// <returns></returns>
public static int GetAuthorByPager_Count(string condition)
{
//string strsql = string.Format("GetDataByPager_Count '{0}'", condition);
string strsql = string.Format("GetDataByPager_Count '{0}','{1}' ", "Author", condition);
return DBHelper.GetScalar(strsql);
}
}
BLL层代码：
public static partial class AuthorManager
{
/// <summary>
/// 分页取数据
/// </summary>
/// <param name="start">起始记录数（从1开始)</param>
/// <param name="limit">每页的条数</param>
/// <param name="condition">查询条件</param>
/// <returns></returns>
public static IList<Author> GetAuthorByPager(int start, int limit, string condition)
{
return DAL.AuthorService.GetAuthorByPager(start, limit, condition);
}
/// <summary>
/// 条件查询结果集数目
/// </summary>
/// <param name="condition">条件</param>
/// <returns></returns>
public static int GetAuthorByPager_Count(string condition)
{
return DAL.AuthorService.GetAuthorByPager_Count(condition);
}
}
引用了两个常用的js 代码：
String.format = function() {
if (arguments.length == 0)
return null;
var str = arguments[0];
for (var i = 1; i < arguments.length; i++) {
var re = new RegExp('\\{' + (i - 1) + '\\}', 'gm');
str = str.replace(re, arguments[i]);
}
return str;
}
function StringBuffer()
{
this._strings_=new Array();
}
StringBuffer.prototype.append = function(str)
{
this._strings_.push(str);
}
StringBuffer.prototype.toString=function(){
return this._strings_.join("");
}
UI层得到数据：
public partial class HandleAuthorList : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Request["startIndex"] != null && Request["limit"] != null)
{
int startIndex = int.Parse(Request["startIndex"].ToString());
int limit = int.Parse(Request["limit"].ToString());
IList<Models.Author> authors = BLL.AuthorManager.GetAuthorByPager(startIndex, limit, "1=1");
string json = JsonHelper.Serialize(authors);
Response.Write(json);
}
else if (Request["type"] != null)
{
int rowCount= BLL.AuthorManager.GetAuthorByPager_Count("1=1");
Response.Write(rowCount);
}
}
}
Ajax异步刷新：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AuthorMgr.aspx.cs" Inherits="AuthorMgr" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
<script src="scripts/jquery-1.2.6.js" type="text/javascript"></script>
<script src="scripts/jquery-1.2.6-vsdoc-cn.js" type="text/javascript"></script>
<script src="scripts/string.format.js" type="text/javascript"></script>
<script src="scripts/StringBuffer.js" type="text/javascript"></script>
<script type="text/javascript">
<script type="text/javascript">
var pageIndex = 1; //用于保存或设置当前页数
var startIndex = 1; //用于保存或设置记录条数
var limit = 3; //用于设置分页的条数
var rowcount = 0; //表示总记录数
var pageCount = 0; //代表总页数
var oFooter = "<tr align='left' style='color:#003399;background-color:#99CCCC;'>"+
"<td colspan='4'><table border='0'>"+
"<tr><td><a>首页</a></td><td><a>下一页</a></td><td><a>上一页</a></td><td><a>最后一页</a></td></tr>" +
"</table></td></tr>"
function AjaxPager() {
var $table = $("#GridView1");
$("a", $table).attr("href", "javascript:void(0)")
.click(function() {
$("tr>td", $table).parent().remove();
var oA = $(this).text();
if (oA == "首页") {
pageIndex = 1;
} else if (oA == "上一页") {
pageIndex = pageIndex == 1 ? 1 : pageIndex - 1;
} else if (oA == "下一页") {
pageIndex = pageIndex >= pageCount ? pageIndex : pageIndex + 1;
} else {
pageIndex = pageCount;
}
startIndex = (pageIndex - 1) * limit + 1;
$.getJSON("HandleAuthorList.aspx", { startIndex: startIndex, limit: limit }, function(josnArray) {
var sb = new StringBuffer();
$.each(josnArray, function(i, item) {
var trTemplate = "<tr style='color:#003399;background-color:White;'>" +
"<td>{0}</td><td>{1}</td><td>{2}</td><td>{3}</td>" +
"</tr>";
var oTr = String.format(trTemplate, item.id, item.au_Id, item.au_Lname, item.phone);
sb.append(oTr);
})
$table.append(sb.toString());
if ($("td>a", $table).length == 0) $table.append(oFooter);
var $tableFooter = $("td>table", $table);
if (pageIndex == 1)
$("tr>td:gt(1)", $tableFooter).hide();
else if (pageIndex == pageCount)
$("tr>td:lt(2)", $tableFooter).hide();
AjaxPager();
})
});
}
$(document).ready(function() {
$.get("HandleAuthorList.aspx", { type: "getcount" }, function(data) {
rowcount = parseInt(data);
if (rowcount % limit == 0)
pageCount = rowcount / limit;
else
pageCount = parseInt(rowcount / limit) + 1;
AjaxPager();
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AllowPaging="True"
AutoGenerateColumns="False" BackColor="White" BorderColor="#3366CC"
BorderStyle="None" BorderWidth="1px" CellPadding="4" DataKeyNames="Id"
DataSourceID="SqlDataSource1" EmptyDataText="没有可显示的数据记录。" PageSize="3"
Width="494px" EnableViewState="False">
<PagerSettings FirstPageText="首页" LastPageText="最后一页"
Mode="NextPreviousFirstLast" NextPageText="下一页" PreviousPageText="上一页" />
<RowStyle BackColor="White" ForeColor="#003399" />
<Columns>
<asp:BoundField DataField="Id" HeaderText="Id" ReadOnly="True"
SortExpression="Id" />
<asp:BoundField DataField="Au_Id" HeaderText="Au_Id" SortExpression="Au_Id" />
<asp:BoundField DataField="Au_Lname" HeaderText="Au_Lname"
SortExpression="Au_Lname" />
<asp:BoundField DataField="Phone" HeaderText="Phone" SortExpression="Phone" />
</Columns>
<FooterStyle BackColor="#99CCCC" ForeColor="#003399" />
<PagerStyle BackColor="#99CCCC" ForeColor="#003399" HorizontalAlign="Left" />
<SelectedRowStyle BackColor="#009999" Font-Bold="True" ForeColor="#CCFF99" />
<HeaderStyle BackColor="#003399" Font-Bold="True" ForeColor="#CCCCFF" />
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:JQuerySimpleDBConnectionString1 %>"
DeleteCommand="DELETE FROM [Author] WHERE [Id] = @Id"
InsertCommand="INSERT INTO [Author] ([Au_Id], [Au_Lname], [Au_Fname], [Phone], [Addr], [City], [State], [Zip]) VALUES (@Au_Id, @Au_Lname, @Au_Fname, @Phone, @Addr, @City, @State, @Zip)"
ProviderName="<%$ ConnectionStrings:JQuerySimpleDBConnectionString1.ProviderName %>"
SelectCommand="SELECT [Id], [Au_Id], [Au_Lname], [Au_Fname], [Phone], [Addr], [City], [State], [Zip] FROM [Author] order by Id desc"
UpdateCommand="UPDATE [Author] SET [Au_Id] = @Au_Id, [Au_Lname] = @Au_Lname, [Au_Fname] = @Au_Fname, [Phone] = @Phone, [Addr] = @Addr, [City] = @City, [State] = @State, [Zip] = @Zip WHERE [Id] = @Id">
<DeleteParameters>
<asp:Parameter Name="Id" Type="Int32" />
</DeleteParameters>
<InsertParameters>
<asp:Parameter Name="Au_Id" Type="String" />
<asp:Parameter Name="Au_Lname" Type="String" />
<asp:Parameter Name="Au_Fname" Type="String" />
<asp:Parameter Name="Phone" Type="String" />
<asp:Parameter Name="Addr" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="State" Type="String" />
<asp:Parameter Name="Zip" Type="String" />
</InsertParameters>
<UpdateParameters>
<asp:Parameter Name="Au_Id" Type="String" />
<asp:Parameter Name="Au_Lname" Type="String" />
<asp:Parameter Name="Au_Fname" Type="String" />
<asp:Parameter Name="Phone" Type="String" />
<asp:Parameter Name="Addr" Type="String" />
<asp:Parameter Name="City" Type="String" />
<asp:Parameter Name="State" Type="String" />
<asp:Parameter Name="Zip" Type="String" />
<asp:Parameter Name="Id" Type="Int32" />
</UpdateParameters>
</asp:SqlDataSource>
</div>
</form>
</body>
</html>
