javascript - 将包含字符串数据的变量转换为 JavaScript REST API 的 JSON 对象

Question

这里我有名为 item 的变量并包含以下数据:

{
  __metadata: {
    "type": "SP.Data.ClinicalTestingPhaseIIListItem"
  },
  Control: 1,
  Randomization: 2,
  Blindings: 3,
  Groups: 4,
  DoseTitration: 5,
  Stratification: 6,
  PatientsDoseLevel: 7,
  TumourResponse: 8,
  DetermineWarrants: 9,
  Title: 1
}

现在，当我将它传递给下面编写的 ajax 调用时，经过一番研究后出现错误，我得到的结论是数据以字符串格式而不是对象传递。

Microsoft.SharePoint.Client.InvalidClientQueryException: A node of type PrimitiveValue was read from the JSON reader when trying to read the start of an entry. A StartObject node was expected.

下面是我的ajax调用

jQuery.ajax({
        url: requestUri,
        type: "POST",
        data: JSON.stringify(item),
        headers: header,
        success:function(){
        alert("List itme Inserted Sucessfully");    
        },
        error: function(data){
        console.log(data);
                alert(data.responseText);
        alert("Error Occured");
        }
});

Answer 1

删除 JSON.stringify 并查看

jQuery.ajax({

        url: requestUri,
        type: "POST",
        data: item,
        headers: header,
        success:function(){
        alert("List itme Inserted Sucessfully");    
        },
        error: function(data){
        console.log(data);
                alert(data.responseText);
        alert("Error Occured");
        }
});