从字典中正确地将字符串转换为 Json

Question

我想向 Flask 服务器发送 json 请求。我使用 UnityWebRequest 来执行以下操作，

IEnumerator Post(string url, string bodyJsonString)
{
    var request = new UnityWebRequest(url, "POST");
    byte[] bodyRaw = Encoding.UTF8.GetBytes(bodyJsonString);
    request.uploadHandler = (UploadHandler) new UploadHandlerRaw(bodyRaw);
    request.downloadHandler = (DownloadHandler) new DownloadHandlerBuffer();
    request.SetRequestHeader("Content-Type", "application/json");
    yield return request.SendWebRequest();
}

我使用下面的代码来创建 json,

Dictionary<string, string> RootJson = new Dictionary<string, string>();
Dictionary<string, float> id_val = new Dictionary<string, float>();
Dictionary<string,byte[]> employeeData = new Dictionary<string, byte[]>();

CalibrationJson.Add("id",1);
imagesJson.Add("employeeData",encodedByte);

RootJson.Add("id", JsonConvert.SerializeObject(id_val.ToString()));
RootJson.Add("data", JsonConvert.SerializeObject(employeeData.ToString()));

StartCoroutine(Post("http://127.0.0.1:5000/emp_detail", JsonConvert.SerializeObject(RootJson.ToString())));

然而它并没有创建一个合适的 json 虽然我每次都序列化了字典。它在服务器中抛出以下错误，

System.Collections.Generic.Dictionary`2[System.String,System.String]

我错过了什么？

Answer 1

从您的序列化代码中删除 ToString：

RootJson.Add("id", JsonConvert.SerializeObject(id_val));
RootJson.Add("data", JsonConvert.SerializeObject(employeeData));

StartCoroutine(Post("http://127.0.0.1:5000/emp_detail", JsonConvert.SerializeObject(RootJson)));

对于不覆盖 ToString 的类型，它将 return 类型名称，因此对于 Dictionary<string, string>() 你将得到 "System.Collections.Generic.Dictionary`2 [System.String,System.String]":

Console.WriteLine(new Dictionary<string, string>().ToString()); // prints System.Collections.Generic.Dictionary`2[System.String,System.String]

从字典中正确地将字符串转换为 Json

Converting String to Json Properly from the Dictionary

c#

json

dictionary

unity3d

unitywebrequest