反序列化嵌套对象数组的问题

Question

这是我的模型：

public class Order
{
    public IEnumerable<LineItem> LineItems { get; set; }
}

public class LineItem
{
    [JsonPropertyName("id")]
    public int Id { get; set; }
    [JsonPropertyName("name")]
    public string Name { get; set; }
    [JsonPropertyName("product_id")]
    public int ProductId { get; set; }
    [JsonPropertyName("variation_id")]
    public int VariationId { get; set; }
    [JsonPropertyName("quantity")]
    public int Quantity { get; set; }
    [JsonPropertyName("tax_class")]
    public string TaxClass { get; set; }
    [JsonPropertyName("subtotal")]
    public string Subtotal { get; set; }
    [JsonPropertyName("subtotal_tax")]
    public string SubtotalTax { get; set; }
    [JsonPropertyName("total")]
    public string Total { get; set; }
    [JsonPropertyName("total_tax")]
    public string TotalTax { get; set; }
    [JsonPropertyName("taxes")]
    public List<object> Taxes { get; set; }
    [JsonPropertyName("meta_data")]
    public List<MetaData> MetaData { get; set; }
    [JsonPropertyName("sku")]
    public string Sku { get; set; }
    [JsonPropertyName("price")]
    public double Price { get; set; }
    [JsonPropertyName("parent_name")]
    public string ParentName { get; set; }
}

如您所见，HttpRequest 属性包含一个订单项数组：


[
    {
    "id":7928,
    "parent_id":0,
    "status":"on-hold",
    "currency":"GBP",
    "version":"5.7.1",
    "prices_include_tax":true,
    "date_created":"2021-10-04T00:26:22",
    "date_modified":"2021-10-04T00:26:22",
    "discount_total":"0.00",
    "discount_tax":"0.00",
    "shipping_total":"0.00",
    "shipping_tax":"0.00",
    "cart_tax":"0.00",
    "total":"2.50",
    "total_tax":"0.00",
    "customer_id":3,
    "order_key":"redacted",
    "billing":{
       "first_name":"redacted",
       "last_name":"redacted",
       "company":"",
       "address_1":"redacted",
       "address_2":"redacted",
       "city":"redacted",
       "state":"redacted",
       "postcode":"redacted",
       "country":"GB",
       "email":"redacted",
       "phone":"redacted"
    },
    "shipping":{
        "first_name":"redacted",
        "last_name":"redacted",
        "company":"",
        "address_1":"redacted",
        "address_2":"redacted Lane",
        "city":"redacted",
        "state":"redacted",
        "postcode":"redacted",
        "country":"GB",
        "phone":""
     },
     "payment_method":"bacs",
     "payment_method_title":"Direct bank transfer",
     "transaction_id":"",
     "customer_ip_address":"redacted",
     "customer_user_agent":"redacted",
     "created_via":"redacted",
     "customer_note":"",
     "date_completed":null,
     "date_paid":null,
     "cart_hash":"redacted",
     "number":"redacted",
     "meta_data":[
        {
           "id":190011,
           "key":"redacted",
           "value":"no"
        },
        {
           "id":190012,
           "key":"redacted",
           "value":"yes"
        },
        {
           "id":190016,
           "key":"_new_order_email_sent",
           "value":"true"
        },
        {
           "id":190017,
           "key":"_thankyou_action_done",
           "value":"1"
        }
     ],
     "line_items":[
        {
           "id":5287,
           "name":"John Guest 3\/8 to 1\/4 Fitting PI0112f4S",
           "product_id":5699,
           "variation_id":0,
           "quantity":1,
           "tax_class":"",
           "subtotal":"2.50",
           "subtotal_tax":"0.00",
           "total":"2.50",
           "total_tax":"0.00",
           "taxes":[
              
           ],
           "meta_data":[
              {
                 "id":48648,
                 "key":"_WCPA_order_meta_data",
                 "value":"",
                 "display_key":"_WCPA_order_meta_data",
                 "display_value":""
              }
           ],
           "sku":"",
           "price":2.5,
           "parent_name":null
        }
     ],
     "tax_lines":[
        
     ],
     "shipping_lines":[
        {
           "id":5288,
           "method_title":"Collect from store",
           "method_id":"local_pickup",
           "instance_id":"13",
           "total":"0.00",
           "total_tax":"0.00",
           "taxes":[
              
           ],
           "meta_data":[
              {
                 "id":48647,
                 "key":"Items",
                 "value":"John Guest 3\/8 to 1\/4 Fitting PI0112f4S &times; 1",
                 "display_key":"Items",
                 "display_value":"John Guest 3\/8 to 1\/4 Fitting PI0112f4S &times; 1"
              }
           ]
        }
     ],
     "fee_lines":[
        
     ],
     "coupon_lines":[
        
     ],
     "refunds":[
        
     ],
     "date_created_gmt":"2021-10-03T23:26:22",
     "date_modified_gmt":"2021-10-03T23:26:22",
     "date_completed_gmt":null,
     "date_paid_gmt":null,
     "currency_symbol":"\u00a3",
     "_links":{
        "self":[
           {
              "href":"redacted"
           }
        ],
        "collection":[
           {
              "href":"redacted"
           }
        ],
        "customer":[
           {
              "href":"redacted"
           }
        ]
     }
  },
]

我想知道为什么使用

反序列化

public class WooCommerceOrders
    {
        private HttpRequestService _httpRequestService;
        private string _url;

        public WooCommerceOrders()
        {
            _httpRequestService = new HttpRequestService();
            _url = "https://kegthat.com/wp-json/wc/v3/orders";
        }

        public List<Order> GetOrdersJson()
        {
            var result = _httpRequestService.CallApi(_url).Content.ReadAsStringAsync();
            return _httpRequestService.DeserializeApiResponseJson<List<Order>>(result.Result);
        }
    }

订单项的 json returns

"lineItems": null,

但是一些字段，例如运费 return

"shipping": {
"firstName": null,
"lastName": null,
"company": "",
"address1": null,
"address2": null,
"city": "redacting city",
"state": "Cheshire",
"postcode": "redacting postcode",
"country": "GB",
"phone": ""
},

这不会让我添加比内容更多的代码这不会让我添加比内容更多的代码这不会让我添加比内容更多的代码这不会让我添加比内容更多的代码这不会让我添加比内容更多的代码这不会让我添加比内容更多的代码这不会让我添加比内容更多的代码这不会让我添加比内容更多的代码这不会让我添加比内容更多的代码

为什么我不能 return 订单项？

Answer 1

IEnumerable<T> 不是序列化程序的有效类型。它没有为序列化程序定义集合的任何具体实现以将 JSON 解析为。反序列化 JSON 数组时使用 List<T>。

Answer 2

尝试使用 Newtonsoft.Json

using Newtonsoft.Json;
.....

 public List<Order> GetOrdersJson()
{
var result = _httpRequestService.CallApi(_url).Content.ReadAsStringAsync();
return JsonConvert.DeserializeObject< List<Order>>(result.Result);
}

测试得到line_items

var result= GetOrdersJson();
var lineItems=result[0].line_items;

[
  {
    "id": 5287,
    "name": "John Guest 3/8 to 1/4 Fitting PI0112f4S",
    "product_id": 5699,
    "variation_id": 0,
    "quantity": 1,
    "tax_class": "",
    "subtotal": "2.50",
    "subtotal_tax": "0.00",
    "total": "2.50",
    "total_tax": "0.00",
    "taxes": [],
    "meta_data": [
      {
        "id": 48648,
        "key": "_WCPA_order_meta_data",
        "value": "",
        "display_key": "_WCPA_order_meta_data",
        "display_value": ""
      }
    ],
    "sku": "",
    "price": 2.5,
    "parent_name": null
  }
]

类

public class Order
{
    public int id { get; set; }
    public int parent_id { get; set; }
    public string status { get; set; }
    public string currency { get; set; }
    public string version { get; set; }
    public bool prices_include_tax { get; set; }
    public DateTime date_created { get; set; }
    public DateTime date_modified { get; set; }
    public string discount_total { get; set; }
    public string discount_tax { get; set; }
    public string shipping_total { get; set; }
    public string shipping_tax { get; set; }
    public string cart_tax { get; set; }
    public string total { get; set; }
    public string total_tax { get; set; }
    public int customer_id { get; set; }
    public string order_key { get; set; }
    public Billing billing { get; set; }
    public Shipping shipping { get; set; }
    public string payment_method { get; set; }
    public string payment_method_title { get; set; }
    public string transaction_id { get; set; }
    public string customer_ip_address { get; set; }
    public string customer_user_agent { get; set; }
    public string created_via { get; set; }
    public string customer_note { get; set; }
    public object date_completed { get; set; }
    public object date_paid { get; set; }
    public string cart_hash { get; set; }
    public string number { get; set; }
    public List<MetaData> meta_data { get; set; }
    public List<LineItem> line_items { get; set; }
    public List<object> tax_lines { get; set; }
    public List<ShippingLine> shipping_lines { get; set; }
    public List<object> fee_lines { get; set; }
    public List<object> coupon_lines { get; set; }
    public List<object> refunds { get; set; }
    public DateTime date_created_gmt { get; set; }
    public DateTime date_modified_gmt { get; set; }
    public object date_completed_gmt { get; set; }
    public object date_paid_gmt { get; set; }
    public string currency_symbol { get; set; }
    public Links _links { get; set; }
}


public class Billing
{
    public string first_name { get; set; }
    public string last_name { get; set; }
    public string company { get; set; }
    public string address_1 { get; set; }
    public string address_2 { get; set; }
    public string city { get; set; }
    public string state { get; set; }
    public string postcode { get; set; }
    public string country { get; set; }
    public string email { get; set; }
    public string phone { get; set; }
}

public class Shipping
{
    public string first_name { get; set; }
    public string last_name { get; set; }
    public string company { get; set; }
    public string address_1 { get; set; }
    public string address_2 { get; set; }
    public string city { get; set; }
    public string state { get; set; }
    public string postcode { get; set; }
    public string country { get; set; }
    public string phone { get; set; }
}

public class MetaData
{
    public int id { get; set; }
    public string key { get; set; }
    public string value { get; set; }
    public string display_key { get; set; }
    public string display_value { get; set; }
}

public class LineItem
{
    public int id { get; set; }
    public string name { get; set; }
    public int product_id { get; set; }
    public int variation_id { get; set; }
    public int quantity { get; set; }
    public string tax_class { get; set; }
    public string subtotal { get; set; }
    public string subtotal_tax { get; set; }
    public string total { get; set; }
    public string total_tax { get; set; }
    public List<object> taxes { get; set; }
    public List<MetaData> meta_data { get; set; }
    public string sku { get; set; }
    public double price { get; set; }
    public object parent_name { get; set; }
}

public class ShippingLine
{
    public int id { get; set; }
    public string method_title { get; set; }
    public string method_id { get; set; }
    public string instance_id { get; set; }
    public string total { get; set; }
    public string total_tax { get; set; }
    public List<object> taxes { get; set; }
    public List<MetaData> meta_data { get; set; }
}

public class Self
{
    public string href { get; set; }
}

public class Collection
{
    public string href { get; set; }
}

public class Customer
{
    public string href { get; set; }
}

public class Links
{
    public List<Self> self { get; set; }
    public List<Collection> collection { get; set; }
    public List<Customer> customer { get; set; }
}

Answer 3

 public List<Order> GetOrdersJson()
    {
        var result = _httpRequestService.CallApi(_url).Content.ReadAsStringAsync();
        return _httpRequestService.DeserializeApiResponseJson<Order>(result.Result);
    }

反序列化 List<Order> 这不是反序列化程序所期望的。尝试 return _httpRequestService.DeserializeApiResponseJson<Order> 而不是

反序列化嵌套对象数组的问题

Problems Deserialising a nested object array

c#

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json.net