Javascript 通过Sahi的WebApi请求出现错误。原因可能是什么？

下面是当开发人员运行代码时，我们可以在fiddler中看到的JSON

{
    "EventId": 0,
    "Title": "Matz test event",
    "Topics": "203,207",
    "Type": {
        "Id": 7,
        "Name": "Conference"
    },
    "Notes": "Test Meeting Notes",
    "StartDate": "03 March 2014, 05:00 PM",
    "EndDate": "03 March 2014, 06:00 PM",
    "Venue": "Venue 1",
    "Address": "ub Plaza , st Marks Road, bangalore ,India",
    "Address1": "Ub Plaza",
    "Address2": "St Marks Road",
    "City": "Bangalore",
    "State": "",
    "Country": "India",
    "Latitude": "12.9716396",
    "Longitude": "77.6010666",
    "Contactids": "0~0",
    "OcmContactIds": "61756~52122",
    "LastNames": "Andrews~Andrews",
    "FirstNames": "Alyse~Benjamin",
    "MiddleNames": "G.~",
    "FirmIds": "MRGNSTOO4~WNGRSS001",
    "FirmNames": "Morgan Stanley & Co. LLC~Columbia Wanger Asset Management,LLC",
    "RsvpIds": "3~2",
    "AttendanceIds": "1~0",
    "ContactNotes": "~",
    "TopicIds": "203~207",
    "CoprPartIds": "87~47",
    "CorpBrokerId": 8
}

在这里，我们有

“Type”：{“Id”：7，“Name”：“Conference”}

，一个名称和Id对。我们编写了下面的代码来发送请求

$request.setBody("{\"Title\":\"Matz test event Updated\",\"Type\":[{\"Id\":7,\"Name\":\"Conference\"}],\"StartDate\":\"03 March 2014, 06:00 PM\",\"EndDate\":\"03 March 2014, 07:00 PM\"}");

但是，我收到“选择有效类型”错误

---

知道为什么会这样吗？

如果您有JSON，可以使用stringify（）并将字符串传递给$request.setBody