JQuery.getJSON 从aspx页面返回JSON数据 .  

2012-01-05 12:44:02|  分类： asp.net |举报|字号 订阅
1. 发送请求的WebForm1.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Benq.Flower.WebAdmin.Module.WebForm1" %>
<!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 runat="server">
<title></title>
<script src="../javascript/jquery-1.2.3.pack.js" type="text/javascript" language="javascript"></script>
<script type="text/javascript" language="javascript">
        function getData() 
        { 
            $.getJSON("WebForm2.aspx?jsoncallback=?", 
                function(data) 
                { 
                    $.each(data.items, function(i, item) 
                    { 
                        $("<div></div>") 
                            .text(item.title) 
                            .css("color", item.color) 
                            .appendTo($("#listbox")); 
                    });                     
                } 
          ); 
        } 
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="Button1" type="button" value="click to get Json" onclick="javaScript:getData();" />
</div>
<div id="listbox">
</div>
</form>
</body>
</html>
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Benq.Flower.WebAdmin.Module.WebForm1" %>
<!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 runat="server">
<title></title>
<script src="../javascript/jquery-1.2.3.pack.js" type="text/javascript" language="javascript"></script>
<script type="text/javascript" language="javascript">
        function getData() 
        { 
            $.getJSON("WebForm2.aspx?jsoncallback=?", 
                function(data) 
                { 
                    $.each(data.items, function(i, item) 
                    { 
                        $("<div></div>") 
                            .text(item.title) 
                            .css("color", item.color) 
                            .appendTo($("#listbox")); 
                    });                     
                } 
          ); 
        } 
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="Button1" type="button" value="click to get Json" onclick="javaScript:getData();" />
</div>
<div id="listbox">
</div>
</form>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Benq.Flower.WebAdmin.Module.WebForm1" %> <!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 runat="server"> <title></title> <script src="../javascript/jquery-1.2.3.pack.js" type="text/javascript" language="javascript"></script> <script type="text/javascript" language="javascript"> function getData() { $.getJSON("WebForm2.aspx?jsoncallback=?", function(data) { $.each(data.items, function(i, item) { $("<div></div>") .text(item.title) .css("color", item.color) .appendTo($("#listbox")); }); } ); } </script> </head> <body> <form id="form1" runat="server"> <div> <input id="Button1" type="button" value="click to get Json" onclick="javaScript:getData();" /> </div> <div id="listbox"> </div> </form> </body> </html> 
2. 提供数据的WebForm2.aspx

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public partial class WebForm2 : System.Web.UI.Page 
    { 
protected void Page_Load(object sender, EventArgs e) 
        { 
string callback = Request.QueryString["jsoncallback"]; 
string data = "{\"title\": \"Recent Uploads tagged cat\",\"link\": \"http://www.sina.com.cn\",\"items\": [{\"title\": \"Russell 003\",\"color\": \"red\"},{\"title\": \"Cat [07.04.11]\",\"color\": \"yellow\"}]}"; 
string result = string.Format("{0}({1})", callback, data); 
            Response.Expires = -1; 
            Response.Clear(); 
            Response.ContentEncoding = Encoding.UTF8; 
            Response.ContentType = "application/json"; 
            Response.Write(result); 
            Response.Flush(); 
            Response.End(); 
        } 
    } 
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public partial class WebForm2 : System.Web.UI.Page 
    { 
protected void Page_Load(object sender, EventArgs e) 
        { 
string callback = Request.QueryString["jsoncallback"]; 
string data = "{\"title\": \"Recent Uploads tagged cat\",\"link\": \"http://www.sina.com.cn\",\"items\": [{\"title\": \"Russell 003\",\"color\": \"red\"},{\"title\": \"Cat [07.04.11]\",\"color\": \"yellow\"}]}"; 
string result = string.Format("{0}({1})", callback, data); 
            Response.Expires = -1; 
            Response.Clear(); 
            Response.ContentEncoding = Encoding.UTF8; 
            Response.ContentType = "application/json"; 
            Response.Write(result); 
            Response.Flush(); 
            Response.End(); 
        } 
    } 
public partial class WebForm2 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string callback = Request.QueryString["jsoncallback"]; string data = "{\"title\": \"Recent Uploads tagged cat\",\"link\": \"http://www.sina.com.cn\",\"items\": [{\"title\": \"Russell 003\",\"color\": \"red\"},{\"title\": \"Cat [07.04.11]\",\"color\": \"yellow\"}]}"; string result = string.Format("{0}({1})", callback, data); Response.Expires = -1; Response.Clear(); Response.ContentEncoding = Encoding.UTF8; Response.ContentType = "application/json"; Response.Write(result); Response.Flush(); Response.End(); } } 
注意返回数据的格式 string.Format("{0}({1})", callback, data)