[英]Newtonsoft.Json.JsonSerializationException in deserializing the JSON response C#
[英]Newtonsoft.Json.JsonSerializationException: C#
再會!
我在反序列化 JSON 字符串時遇到問題
這是我的 function 的樣子:
public static void Deserialised()
{
string jsonString = "{\"data\":{\"merchantRefNo\":\"foo\"," +
"\"responseText\":\"Approved\"," +
"\"status\":\"A\"," +
"\"txnDate\":\"20220321\"," +
"\"txnId\":\"000067\"," +
"\"txnTime\":\"1049\"," +
"\"txnType\":\"sale\"," +
"\"amt\":\"109\"}," +
"\"dataType\":\"trans\"}";
Root myDeserializedJson = JsonConvert.DeserializeObject<Root>(jsonString); //Error popup here!
foreach (var datas in myDeserializedJson.data)
{
Console.WriteLine(datas.merchantRefNo);
}
}
這是我的 Model:
public class Data
{
public string merchantRefNo { get; set; }
public string responseText { get; set; }
public string status { get; set; }
public string txnDate { get; set; }
public string txnId { get; set; }
public string txnTime { get; set; }
public string txnType { get; set; }
public string amt { get; set; }
}
public class Root
{
public List<Data> data { get; set; }
public string dataType { get; set; }
}
錯誤:
Newtonsoft.Json.JsonSerializationException: '無法將當前的 JSON object(例如 {"name":"value"})反序列化為類型 'System.Collections.Generic.List`1[fortestings.Program+Data]' 因為該類型需要一個JSON 數組(例如 [1,2,3])以正確反序列化。 要修復此錯誤,請將 JSON 更改為 JSON 數組(例如 [1,2,3])或更改反序列化類型,使其成為正常的 .NET 類型(例如,不是像 integer 這樣的原始類型,不是像數組或列表)可以從 JSON object 反序列化。也可以將 JsonObjectAttribute 添加到類型以強制它從 JSON object 反序列化。路徑“data.merchantRefNo”,第 1 行,88117734 73.78
{ "data":{ "merchantRefNo":"foo", "responseText":"Approved", "status":"A", "txnDate":"20220321", "txnId":"000067", "txnTime": "1049", "txnType":"sale", "amt":"109" }, "dataType":"trans" }
這是你的根 object JSON 但你 class 期待數據列表
public class Root
{
public **List<Data>** data { get; set; }
public string dataType { get; set; }
}
因此,反序列化 json 與您的 model 不匹配。您的 Json 應該如下所示":"20220321", "txnId":"000067", "txnTime":"1049", "txnType":"sale", "amt":"109" }], "dataType":"trans" }
在您的Root
class 中,將List<Data> data
更改為Data data
,然后您可以根據需要將JSON
字符串反序列化到您的Root
class:
using System;
using Newtonsoft.Json;
public class Program
{
public static void Main()
{
string jsonString = "{\"data\":{\"merchantRefNo\":\"foo\"," +
"\"responseText\":\"Approved\"," +
"\"status\":\"A\"," +
"\"txnDate\":\"20220321\"," +
"\"txnId\":\"000067\"," +
"\"txnTime\":\"1049\"," +
"\"txnType\":\"sale\"," +
"\"amt\":\"109\"}," +
"\"dataType\":\"trans\"}";
var result =JsonConvert.DeserializeObject<Root>(jsonString);
Console.WriteLine(result.dataType);
Console.WriteLine(result.data.merchantRefNo);
Console.WriteLine(result.data.status);
Console.WriteLine(result.data.txnId);
}
}
public class Data
{
public string merchantRefNo { get; set; }
public string responseText { get; set; }
public string status { get; set; }
public string txnDate { get; set; }
public string txnId { get; set; }
public string txnTime { get; set; }
public string txnType { get; set; }
public string amt { get; set; }
}
public class Root
{
public Data data { get; set; }
public string dataType { get; set; }
}
Output:
trans
foo
A
000067
你可以在這里找到一個工作示例: https://do.netfiddle.net/8Nsl9m
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