.net framework 3.5 利用asmx文件，向前台页面传递JSON字符串。
1.前台页面代码
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="jQuery_jSON._Default" %>
<!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 type="text/javascript" src="JS/jquery.js"></script>
<script type="text/javascript" src="JS/AJAX_jSON.js"></script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Scripts>
<asp:ScriptReference Path="~/JS/jquery.js" />
<asp:ScriptReference Path="~/JS/AJAX_jSON.js" />
</Scripts>
<Services>
<asp:ServiceReference Path="~/services/WebService1.asmx" />
</Services>
</asp:ScriptManager>
<div>
<input type="button" value="调用webServices序列化JSON对象" id="btn1"/><br />
姓名：<input type="text" id="name"/><br />
年龄：<input type="text" id="age" /><br/>
性别：<input type="text" id="sex" /><br />
<input type="button" value="反序列化JSON对象" id="btn2"/>
</div>
</form>
</body>
</html>
2.创建对象实体类
public class User
{
private string name;
private string sex;
private int age;
public int Age
{
get { return age; }
set { age = value; }
}
public string Sex
{
get { return sex; }
set { sex = value; }
}
public string Name
{
get { return name; }
set { name = value; }
}
}
3.创建 asmx文件
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
[System.Web.Script.Services.ScriptService]
public class WebService1 : System.Web.Services.WebService
{
//对象序列化成JSON字符串
[WebMethod]
public string GetUser()
{
User user = new User();
user.Name = "michael";
user.Sex = "man";
user.Age = 26;
#region 将对象序列化成JSON字符串返回页面
var jss = new System.Web.Script.Serialization.JavaScriptSerializer();
if (user != null)
{
return jss.Serialize(user);
}
else
{
return null;
}
#endregion
}
[WebMethod]
public void CreateUser(string user)
{
User u = (User)this.SetUser<User>(user);
string test = u.Age + u.Name + u.Sex;
}
// JSON字符串反序列化成对象
public T SetUser<T>(string user)
{
#region 将JSON字符串反序列化成对象
var obj = new System.Web.Script.Serialization.JavaScriptSerializer();
try
{
return obj.Deserialize<T>(user);
}
catch (Exception ex)
{
return default(T);
}
#endregion
}
}
}
4.编写JS文件代码
$(document).ready(function() {
$("#btn1").click(function() {
//调用webServices返回JSON字符串
jQuery_jSON.services.WebService1.GetUser(disp);
});
//json对象显示
function disp(result) {
var json = eval('(' + result + ')');
alert("姓名：" + json.Name + " 性别：" + json.Sex + " 年龄：" + json.Age);
}
$("#btn2").click(function() {
var name = $("#name").attr("value");
var age = $("#age").attr("value");
var sex = $("#sex").attr("value");
var user = "{\"Name\": " + name + ", \"Age\": " + age + ", \"Sex\": " + sex + " }";
//调用webService
jQuery_jSON.services.WebService1.CreateUser(user);
});
});
5补充:如果asmx文件中序列化对象集合
//将对象集合序列化成JSON字符串
[WebMethod]
public string SeriersUser()
{
User user1 = new User();
user1.Name = "michael";
user1.Sex = "man";
user1.Age = 26;
User user2 = new User();
user2.Name = "Ramy";
user2.Sex = "women";
user2.Age = 26;
User[] user = { user1,user2};
//序列化JSON字符串
var jss = new System.Web.Script.Serialization.JavaScriptSerializer();
return jss.Serialize(user);
}
JS代码
//显示对象集合
$("#btn3").click(function() {
jQuery_jSON.services.WebService1.SeriersUser(disp1);
});
function disp1(result) {
alert( result );
var jss = eval(result);
for (var i = 0; i < jss.length; i++) {
alert(jss[i].Name + "|" + jss[i].Sex + "|" + jss[i].Age);
}
}
