无法反序列化JSON数据

Question

我不能反序列化我使用测试下列哪些数据，并使用下面的查询得到了它从World Bank：

http://api.worldbank.org/countries/IRL/indicators/SP.DYN.CBRT.IN? 
per_page=10&date=1960:2016&format=json 

[ 
    { 
    "page": 1, 
    "pages": 28, 
    "per_page": "2", 
    "total": 56 
    }, 
    [ 
    { 
     "indicator": { 
     "id": "SP.DYN.CBRT.IN", 
     "value": "Birth rate, crude (per 1,000 people)" 
     }, 
     "country": { 
     "id": "IE", 
     "value": "Ireland" 
     }, 
     "value": "21.2", 
     "decimal": "0", 
     "date": "1961" 
    }, 
    { 
     "indicator": { 
     "id": "SP.DYN.CBRT.IN", 
     "value": "Birth rate, crude (per 1,000 people)" 
     }, 
     "country": { 
     "id": "IE", 
     "value": "Ireland" 
     }, 
     "value": "21.5", 
     "decimal": "0", 
     "date": "1960" 
    } 
    ] 
] 

我的主类是称为PageModel的定义如下：

public class PageModel 
{ 
    public PageModel() 
    { 
     this.List = new List<Data>(); 
    } 

    [JsonProperty("page")] 
    public int Page { get; set; } 

    [JsonProperty("pages")] 
    public int Pages { get; set; } 

    [JsonProperty("per_page")] 
    public string PerPage { get; set; } 

    [JsonProperty("total")] 
    public int Total { get; set; } 

    public List<Data> List { get; set; } 
} 

cl在阵列中使用的屁股被称为数据和定义如下：

public class Data 
{ 
    public Data() 
    { 
     this.Indicator = new Indicator(); 
     this.Country = new Country(); 
    } 

    [JsonProperty("indicator")] 
    public Indicator Indicator { get; set; } 

    [JsonProperty("country")] 
    public Country Country { get; set; } 

    [JsonProperty("date")] 
    public int Date { get; set; } 

    [JsonProperty("value")] 
    public float Value { get; set; } 

    [JsonProperty("decimal")] 
    public decimal Decimal { get; set; } 

} 

无论是国家和指标类定义如下：

public class Country 
{ 
    [JsonProperty("id")] 
    public string Id { get; set; } 

    [JsonProperty("value")] 
    public string Value { get; set; } 
} 

public class Indicator 
{ 
    [JsonProperty("id")] 
    public string Id { get; set; } 

    [JsonProperty("value")] 
    public string Value { get; set; } 
} 

我HttpClient调用正确返回数据，但每当我尝试反序列化使用NewtonSoft JsonConvert.DeserializeObject函数的数据：

PageModel pageModel = JsonConvert.DeserializeObject<PageModel>(data); 

它返回null。

任何想法为什么？

谢谢。

Answer 1

你的JSON数据格式错误： 你的JSON改成这样，它会工作：

{ 
"page": 1, 
"pages": 28, 
"per_page": "2", 
"total": 56, 
"List":[ 
{ 
    "indicator": { 
    "id": "SP.DYN.CBRT.IN", 
    "value": "Birth rate, crude (per 1,000 people)" 
    }, 
    "country": { 
    "id": "IE", 
    "value": "Ireland" 
    }, 
    "value": "21.2", 
    "decimal": "0", 
    "date": "1961" 
}, 
{ 
    "indicator": { 
    "id": "SP.DYN.CBRT.IN", 
    "value": "Birth rate, crude (per 1,000 people)" 
    }, 
    "country": { 
    "id": "IE", 
    "value": "Ireland" 
    }, 
    "value": "21.5", 
    "decimal": "0", 
    "date": "1960" 
} 
] 
}