C# 解析从 GraphQL 返回的 Json 字符串 - Monday.com

Question

我在解析 GraphQL 的 json 响应时遇到问题。问题是阵列有一半的时间会返回更多阵列。我的代码变得失控而且丑陋。

Json 文件（稍微修剪一下。它可以是 20 多个数据数组）

{
  "activity_logs": [
    {
      "data": "{\"board_id\":2165785546,\"group_id\":\"new_group2051\",\"is_top_group\":false,\"pulse_id\":2165787062,\"pulse_name\":\"Tyler\",\"column_id\":\"email_address\",\"column_type\":\"email\",\"column_title\":\"Email Address\",\"value\":{\"column_settings\":{\"includePulseInSubject\":true,\"ccPulse\":true,\"bccList\":\"\"}},\"previous_value\":{\"email\":\"[email protected]\",\"text\":\"[email protected]\",\"changed_at\":\"2022-02-15T21:18:48.297Z\",\"column_settings\":{\"includePulseInSubject\":true,\"ccPulse\":true,\"bccList\":\"\"}},\"is_column_with_hide_permissions\":false,\"previous_textual_value\":\"[email protected]\"}"
    },
    {
      "data": "{\"board_id\":2165785546,\"group_id\":\"new_group2051\",\"is_top_group\":false,\"pulse_id\":216578711,\"pulse_name\":\"Nicholas \",\"column_id\":\"email_address\",\"column_type\":\"email\",\"column_title\":\"Email Address\",\"value\":{\"column_settings\":{\"includePulseInSubject\":true,\"ccPulse\":true,\"bccList\":\"\"}},\"previous_value\":{\"email\":\"[email protected]\",\"text\":\"[email protected]\",\"changed_at\":\"2022-02-16T04:44:52.046Z\",\"column_settings\":{\"includePulseInSubject\":true,\"ccPulse\":true,\"bccList\":\"\"}},\"is_column_with_hide_permissions\":false,\"previous_textual_value\":\"[email protected]\"}"
    },
    {
      "data": "{\"board_id\":2165785546,\"group_id\":\"new_group2051\",\"is_top_group\":false,\"pulse_id\":216578711,\"pulse_name\":\"Nicholas \",\"column_id\":\"batch_5\",\"column_type\":\"text\",\"column_title\":\"Batch #\",\"value\":{\"value\":\"75\"},\"previous_value\":{\"value\":\"74\"},\"is_column_with_hide_permissions\":false}"
    },
    {
      "data": "{\"board_id\":2165785546,\"group_id\":\"new_group2051\",\"pulse_id\":216578711,\"is_top_group\":false,\"value\":{\"name\":\"Nicholas \"},\"previous_value\":{\"name\":\"Nicholas \"},\"column_type\":\"name\",\"column_title\":\"Name\"}"
    }
  ]
}

放弃制作后随机“让它工作”尝试是基于类的列表。 IContainer 中的 IContainer 变得非常复杂。

var responseData = JObject.Parse(responseText).SelectToken("data").SelectToken("boards").SelectToken("activity_logs");
dynamic updatedRecords = JsonConvert.DeserializeObject(responseData.ToString());

foreach (var record in updatedRecords)
{
List<Dictionary<string, string>> records = new List<Dictionary<string, string>>();
Dictionary<string, string> fields = new Dictionary<string, string>();
dynamic updates = JsonConvert.DeserializeObject(JObject.Parse(record.ToString()).SelectToken("data").ToString());
foreach(var update in updates)
{
    switch (update.Name.ToString())
    {
        case "column_id":
            fields.Add(update.Name.ToString(), update.Value.ToString());
            break;
        case "pulse_name":
            fields.Add(update.Name.ToString(), update.Value.ToString());
            break;
        case "value":
            dynamic values = JsonConvert.DeserializeObject(JObject.Parse(update.Value.ToString()));
            if (update.Name.ToString().Contains("column_settings"))
            {
                foreach (var value in values)
                {
                    dynamic columns = JsonConvert.DeserializeObject(JObject.Parse(value.Value.ToString()));
                    foreach(var column in columns)
                    {
                        fields.Add($"Value_{column.Name.ToString()}", column.Value.ToString());
                    }
                                                
                }
            }
            else
            {
                foreach (var value in values)
                {
                    fields.Add($"Value_{value.Name.ToString()}", value.Value.ToString());
                }
            }
                                        
            break;
        case "previous_value":
            dynamic prevValues = JsonConvert.DeserializeObject(JObject.Parse(update.Value.ToString()));
            foreach (var prevalue in prevValues)
            {
                fields.Add($"Prevalue_{prevalue.Name.ToString()}", prevalue.Value.ToString());
            }
            break;
        case "previous_textual_value":
            fields.Add(update.Name.ToString(), update.Value.ToString());
            break;
    }
}
if (fields.Count > 0)
{
    records.Add(fields);
    fields.Clear();
}
}

我的错误当我到达：

dynamic values = JsonConvert.DeserializeObject(JObject.Parse(update.Value.ToString()));

-       $exception  {"The best overloaded method match for 'Newtonsoft.Json.JsonConvert.DeserializeObject(string)' has some invalid arguments"} Microsoft.CSharp.RuntimeBinder.RuntimeBinderException

解决方案是一个很大的帮助并导致我的答案。问题是 Activity_logs 数据中带有转义字符，因此字符串包含 \\"。 我必须使用 Replace("\\", "") 和 Replace("\"{", "{") 和 Replace("}\""), "}") 格式化数据部分。这使得字符串可以作为 Json 文件读取。

Answer 1

您必须将字符串传递给 DeserializeObject 而不是 JSON 对象。

另一种方法是将 JSON 映射到 POCO 类型，如下所示，简单的方法是在 Visual Studio 上（复制 JSON 内容，在 Visual Studio 上创建一个新的空类 -> 编辑 -> 过去的特殊 -> 粘贴JSON 作为类）

public class LogsRoot
{
    public Activity_Logs[] activity_logs { get; set; }
}

public class Activity_Logs
{
    public string data { get; set; }
}

public class DataRoot
{
    public long board_id { get; set; }
    public string group_id { get; set; }
    public bool is_top_group { get; set; }
    public long pulse_id { get; set; }
    public string pulse_name { get; set; }
    public string column_id { get; set; }
    public string column_type { get; set; }
    public string column_title { get; set; }
    public Value value { get; set; }
    public Previous_Value previous_value { get; set; }
    public bool is_column_with_hide_permissions { get; set; }
    public string previous_textual_value { get; set; }
}

public class Value
{
    public Column_Settings column_settings { get; set; }
}

public class Column_Settings
{
    public bool includePulseInSubject { get; set; }
    public bool ccPulse { get; set; }
    public string bccList { get; set; }
}

public class Previous_Value
{
    public string email { get; set; }
    public string text { get; set; }
    public DateTime changed_at { get; set; }
    public Column_Settings1 column_settings { get; set; }
}

public class Column_Settings1
{
    public bool includePulseInSubject { get; set; }
    public bool ccPulse { get; set; }
    public string bccList { get; set; }
}

然后加载 JSON 并进行如下操作，

var json = File.ReadAllText("data.json");
var rootLogs = JsonConvert.DeserializeObject<LogsRoot>(json);

Dictionary<string, string> fields = new Dictionary<string, string>();

foreach (var logJson in rootLogs.activity_logs)
{
    var log = JsonConvert.DeserializeObject<DataRoot>(logJson.data);
    fields.Add(log.column_id, log.value.column_settings.bccList + log.value.column_settings.ccPulse);
    fields.Add(log.pulse_name, log.value.column_settings.bccList + log.value.column_settings.ccPulse);
    fields.Add(log.previous_value.email, log.value.column_settings.bccList + log.value.column_settings.ccPulse);
    fields.Add(log.previous_textual_value, log.value.column_settings.bccList + log.value.column_settings.ccPulse);
}

Answer 2

这可能无法解决您的所有问题，但对于您遇到的特定异常，这是因为您试图反序列化 JObject 而不是字符串。

也许你只是想要：

dynamic values = JsonConvert.DeserializeObject(update.Value.ToString());