Question

5用于反序列化我的JSON对象，我得到了Restful url。

以下是我尝试反序列化的两种方法

  var retObject1 = JObject.Parse(_strResponse);
  var rootObject2 = JsonConvert.DeserializeObject<List<ProductObjLibrary>>(_strResponse);

我的字符串响应如下

{"GetProductsResult":[{"BrandID":19081,"BrandName":"A1C NOW SELFCHECK SYSTEM","BrandNameHTML":"A1C NOW SELFCHECK SYSTEM","ClassName":"Diabetes","CleanProductURL":"a1c_now_selfcheck_system","GenericName":"blood glucose monitoring","ManufacturerName":"Bayer","ProductID":19081,"ProductName":"A1C NOW SELFCHECK SYSTEM","Rank":0},{"BrandID":19045,"BrandName":"ABILIFY","BrandNameHTML":"ABILIFY","ClassName":"Antipsychotic","CleanProductURL":"abilify","GenericName":"aripiprazole","ManufacturerName":"Bristol-Myers Squibb and Otsuka","ProductID":19045,"ProductName":"ABILIFY","Rank":0},{"BrandID":19995,"BrandName":"ABRAXANE","BrandNameHTML":"ABRAXANE","ClassName":"Oncology: Breast Cancer","CleanProductURL":"abraxane","GenericName":"paclitaxel","ManufacturerName":"Abraxis Oncology","ProductID":19995,"ProductName":"ABRAXANE","Rank":0},{"BrandID":18413,"BrandName":"ACCOLATE","BrandNameHTML":"ACCOLATE","ClassName":"Asthma\/COPD","CleanProductURL":"accolate","GenericName":"zafirlukast","ManufacturerName":"AstraZeneca Pharmaceuticals","ProductID":18413,"ProductName":"ACCOLATE","Rank":0},{"BrandID":19595,"BrandName":"ACCU-CHECK SPIRIT INSULIN PUMP","BrandNameHTML":"ACCU-CHECK SPIRIT INSULIN PUMP","ClassName":"Diabetes","CleanProductURL":"accu_check_spirit_insulin_pump","GenericName":"blood glucose monitoring","ManufacturerName":"Roche","ProductID":19595,"ProductName":"ACCU-CHECK SPIRIT INSULIN PUMP","Rank":0}]}

使用第一个方法retObject1转换此字符串后，我得到了对象

{
  "GetProductsResult": [
    {
      "BrandID": 19081,
      "BrandName": "A1C NOW SELFCHECK SYSTEM",
      "BrandNameHTML": "A1C NOW SELFCHECK SYSTEM",
      "ClassName": "Diabetes",
      "CleanProductURL": "a1c_now_selfcheck_system",
      "GenericName": "blood glucose monitoring",
      "ManufacturerName": "Bayer",
      "ProductID": 19081,
      "ProductName": "A1C NOW SELFCHECK SYSTEM",
      "Rank": 0
    },
    {
      "BrandID": 19045,
      "BrandName": "ABILIFY",
      "BrandNameHTML": "ABILIFY",
      "ClassName": "Antipsychotic",
      "CleanProductURL": "abilify",
      "GenericName": "aripiprazole",
      "ManufacturerName": "Bristol-Myers Squibb and Otsuka",
      "ProductID": 19045,
      "ProductName": "ABILIFY",
      "Rank": 0
    },
    {
      "BrandID": 19995,
      "BrandName": "ABRAXANE",
      "BrandNameHTML": "ABRAXANE",
      "ClassName": "Oncology: Breast Cancer",
      "CleanProductURL": "abraxane",
      "GenericName": "paclitaxel",
      "ManufacturerName": "Abraxis Oncology",
      "ProductID": 19995,
      "ProductName": "ABRAXANE",
      "Rank": 0
    },
    {
      "BrandID": 18413,
      "BrandName": "ACCOLATE",
      "BrandNameHTML": "ACCOLATE",
      "ClassName": "Asthma/COPD",
      "CleanProductURL": "accolate",
      "GenericName": "zafirlukast",
      "ManufacturerName": "AstraZeneca Pharmaceuticals",
      "ProductID": 18413,
      "ProductName": "ACCOLATE",
      "Rank": 0
    }
  ]
}

使用第二种方法我得到以下错误

Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1[]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.

Answer 1

感谢Fredrik Rofors http://codesurf.blogspot.com/2012/10/jsonconvertdeserializeobject-cannot.html

获得的经验：

If the json value is '[]' => declare the field as List<type>
If the json value is '{}' => declare the field IDictionary<type, type>

在我的情况下，我这样处理了它。

 var rootObject = JsonConvert.DeserializeObject<IDictionary<string, List<ProductObjLibrary>>>(_strResponse);
                       if (rootObject != null)
                           _products = rootObject.FirstOrDefault().Value;

Answer 2

我最近遇到了同样的问题。只是一个建议=＆gt;这样你就不必担心[]或{}中包含的json值。我使用以下代码作为{}中包含的json值，但请记住，我的目的是处理任何情况。

 Dictionary<string, object> values = JsonConvert.DeserializeObject<Dictionary<string, object>>(response_result);

以上代码仅适用于第1级或深度，第2级代码为

 Dictionary<string, object> values =  JsonConvert.DeserializeObject<Dictionary<string, Dictionary<string, object> >>(response_result);

等等多级

Dictionary<string, Dictionary<string, Dictionary<string, Dictionary<string,**...**>> > >

为多层次解决这个问题是非常棘手的，目前，我将深入研究这个问题。

JSON.Parse和JsonConvert.DeserializeObject失败

2 个答案: