c# - 解析 Azure API 管理订阅数据的 json 失败

Question

我运行 post 来获取 API 管理订阅数据，但无法解析返回的 json，也找不到需要对返回的字符串进行进一步过滤的内容。

Postman 显示 json 很好。其他 APIM REST 请求解析 json 就可以了。

有人可以解释一下吗？

字符串 url = $"https://management.azure.com/subscriptions/XXX/resourceGroups/YYY/providers/Microsoft.ApiManagement/service/ZZZ/subscriptions?api-version=2019-12-01& $filter=(contains(name, '{myname}'))";

        string json = null;
        using (HttpClient client = new HttpClient())
        {
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", bearerToken);
            using (HttpResponseMessage response2 = client.GetAsync(url).Result)
            {
                using (HttpContent content = response2.Content)
                {
                    json = content.ReadAsStringAsync().Result;

                    //JObject s = JObject.Parse(json);//didn't work
                    //Console.WriteLine((string)s["name"]);//didn't work
                    //var user = JsonConvert.DeserializeObject<UserAPIMSubscriptionMetaData>(json);//didn't work
                    //var user3 = JsonConvert.DeserializeObject(json);//didn't work

                    var json2 = json.Replace("\r\n", "");
                    json2 = json2.Replace(" ", "");// first replace didn't work so tried adding this one too but didn't work either
                    //var a = JObject.Parse(json2);//tried this too but didn't work
                    var user = JsonConvert.DeserializeObject<UserAPIMSubscriptionMetaData>(json2);
                }
            }
        }


internal class properties
{
    [JsonProperty("ownerId")]
    public string ownerId { get; set; }
    [JsonProperty("scope")]
    public string scope { get; set; }
    [JsonProperty("displayName")]
    public string displayName { get; set; }
    [JsonProperty("state")]
    public string state { get; set; }
    [JsonProperty("createdDate")]
    public string createdDate { get; set; }
    [JsonProperty("startDate")]
    public string startDate { get; set; }
    [JsonProperty("expirationDate")]
    public string expirationDate { get; set; }
    [JsonProperty("endDate")]
    public string endDate { get; set; }
    [JsonProperty("notificationDate")]
    public string notificationDate { get; set; }
    [JsonProperty("stateComment")]
    public string stateComment { get; set; }
    [JsonProperty("allowTracing")]
    public string allowTracing { get; set; }
}
internal class UserAPIMSubscriptionMetaData
{
    [JsonProperty("id")]
    public string id { get; set; }
    [JsonProperty("type")]
    public string thisType { get; set; }
    [JsonProperty("name")]
    public string name { get; set; }
    [JsonProperty("properties")]
    public properties properties { get; set; }
}

ReadAsStringAsync() 的初始结果值:

"{\r\n  \"value\": [\r\n    {\r\n      \"id\": \"/subscriptions/XXXXX/resourceGroups/ZZZZ/providers/Microsoft.ApiManagement/service/YYYYY/subscriptions/sergiosolorzanoSubscription\",\r\n      \"type\": \"Microsoft.ApiManagement/service/subscriptions\",\r\n      \"name\": \"sergiosolorzanoSubscription\",\r\n      \"properties\": {\r\n        \"ownerId\": \"/subscriptions/XXXX/resourceGroups/YYYY/providers/Microsoft.ApiManagement/service/ZZZ/users/sergiosolorzanogmailcom\",\r\n        \"scope\": \"/subscriptions/XXXX/resourceGroups/JJJJJ/providers/Microsoft.ApiManagement/service/ZZZZ/apis\",\r\n        \"displayName\": \"sergiosolorzanoSubscription\",\r\n        \"state\": \"active\",\r\n        \"createdDate\": \"2020-04-23T08:04:31.737Z\",\r\n        \"startDate\": null,\r\n        \"expirationDate\": null,\r\n        \"endDate\": null,\r\n        \"notificationDate\": null,\r\n        \"stateComment\": null,\r\n        \"allowTracing\": true\r\n      }\r\n    }\r\n  ],\r\n  \"count\": 1\r\n}"

Answer 1

我不知道您遇到的确切错误，但我怀疑问题是您没有正确反序列化它。

如果您查看 JSON，您尝试解析的对象位于 value 中。这是一个 Json 数组。您目前要做的是将数组解析为数组包含的对象。

您需要做的是创建第三个对象作为其他对象的“容器”

public class Container
{
    [JsonProperty("value")]
    public IEnumerable<UserAPIMSubscriptionMetaData> Metadata {get; set;}

    [JsonProperty("count")]
    public int Count {get; set;}
}

或者您可以将 Json 解析为 JObject 和 token 来值，这样您的 JSON 就变成了元数据对象的数组，然后您可以将其反序列化为对象的集合。

var jobj = JObject.Parse(json);
var newjson = jobj["value"].ToString();
var myobj = JsonConvert.DeserializeObject<IEnumerable<UserAPIMSubscriptionMetaData>>(newjson);

注释:

我用过IEnumerable<>举个例子，您可以使用您想要的任何类型的集合。数组、列表等

此外，您应该使用正确的异步/等待模式而不是 .Result如.Result可能会导致阻塞。请参阅 Jon Skeet 在 this question 上的回答有关 .Result 的信息与 await .