无效的JSON基元：从jquery ajax方法获取asp.net中的发布值时出错

Question

我正在使用jquery ajax方法并从该方法向asp页面方法发送电子邮件，但得到无效的Json基元错误我已经使用followind代码如果有人知道如何处理这个问题，请帮助。

$.ajax({ 
    url: "login.aspx/DNSValidation", 
    type: 'POST', 
    cache: false, 
    dataType: 'json', 
    data: {"EmailAddress":email.toString()}, 
    contentType: "application/json; charset=utf-8", 
    timeout: 6000, 

    error: function() { 
     alert('AJAX Request Failed'); 
     ajaxInProgress = false; 
    }, 
    success: function (responseData) { 

     Console.debug("Email : " + responseData.d); 

     ajaxInProgress = false; 
    } 

}); //ajax 

login.aspx的页面代码

[WebMethod] 
    public static string DNSValidation(object EmailAddress) 
    { 
       List<object> eMail = new JavaScriptSerializer().ConvertToType<List<object>>(EmailAddress); 

     Address product = new Address(); 

     product.emailaddress = eMail[0].ToString(); 

     string output = JsonConvert.SerializeObject(product); 

     return output; 

    } 

Answer 1

1）替换$就数据部分（）与这样的：

data: {"EmailAddress": "'" + email.toString() + "'"} 

2）更换签名您Web方法与此：

public static string DNSValidation(string EmailAddress) 
{ 
    Address product = new Address(); 
    product.emailaddress = EmailAddress; 
    string output = JsonConvert.SerializeObject(product);   
    return output; 
}