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我想向烧瓶服务器发送一个 json 请求。我习惯UnityWebRequest这样做，

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();
}

我使用以下代码创建 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())));

但是，尽管我每次都对字典进行序列化，但它并没有创建正确的 json。它在服务器中引发以下错误，

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

我错过了什么？

4

1 回答 1

2

ToString从您的序列化代码中删除：

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它的类型，它将返回类型名称，因此 Dictionary<string, string>()您将获得"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]
于 2021-02-07T21:10:25.430 回答