返回的json中有双引号

Question

我有一个动作返回一个简单的json.出于演示目的,我将粘贴示例代码.要序列化的简单类:

public class Employee
{
    public string FullName { get; set; }
}

返回json的动作:

public JsonResult Test()
{
    var employee = new Employee { FullName = "Homer Simpson" };
    var serializer = new JavaScriptSerializer();
    var json = serializer.Serialize(employee);

    return Json(json, JsonRequestBehavior.AllowGet);
}

这是我困惑的地方.当我从浏览器调用此操作并查看Fiddler的响应时,结果如下:

HTTP/1.1 200 OK
Server: ASP.NET Development Server/10.0.0.0
Date: Mon, 15 Aug 2011 20:52:34 GMT
X-AspNet-Version: 4.0.30319
X-AspNetMvc-Version: 3.0
Cache-Control: private
Content-Type: application/json; charset=utf-8
Content-Length: 34
Connection: Close

"{\"FullName\":\"Homer Simpson\"}"

Fiddler中的"JSON"选项卡显示"所选响应不包含有效的JSON文本".有效的回答应该是这样的:

"{"FullName":"Homer Simpson"}"

这里发生了什么？谢谢

Answer 1

您不需要自己序列化为JSON,这应该做:

public JsonResult Test() {
  var employee = new Employee { FullName = "Homer Simpson" };
  return Json(employee, JsonRequestBehavior.AllowGet);
}

您的代码有效地将其序列化两次,从而为您提供字符串结果.

有效的回应应该是这样的:

{"FullName":"Homer Simpson"}

(没有周围的报价)