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我想从 C# 发布到 DeepL API。它只是行不通。谁能告诉我怎么做？

var httpWebRequest = (HttpWebRequest)WebRequest.Create("https://api-free.deepl.com/v2/translate");

httpWebRequest.Method = "POST";
httpWebRequest.ContentType = "application/x-www-form-urlencoded";
httpWebRequest.Headers.Add("auth_key", "auth_key");
httpWebRequest.Headers.Add("target_lang", "JA");

using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
    strSendJson = "{" +
                    "\"text\":\"" + strData.Trim() + "\"," +
                    "}";
}
4

1 回答 1

0

DeepL Simulator 是一个很好的起点：https ://www.deepl.com/docs-api/simulator

使用 POST 时，auth_key它只是表单字段中的另一个字段，而不是标题。

因为内容类型是指定的，因为x-www-form-urlencoded您希望将数据作为url 编码形式发送，而不是 JSON。在电线上，这应该看起来像：

auth_key=[yourAuthKey]&text=Hello, world&target_lang=JA

下面展示了如何使用 HttpClient 从 C# 发送这个 POST 请求：

string authKey = "~MyAuthKey~";

var client = new HttpClient();
client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/x-www-form-urlencoded");       
Dictionary<string, string> data = new Dictionary<string, string>
{
    { "auth_key", authKey },
    { "text", strData.Trim() },
    { "target_lang", "JA" }
};
var response = await client.PostAsync("https://api-free.deepl.com/v2/translate", 
    new System.Net.Http.FormUrlEncodedContent(data));
response.EnsureSuccessStatusCode();

var json = response.Content.ReadAsStringAsync().Result;
deeplResponseObj = Newtonsoft.Json.JsonConvert.DeserializeObject<DeepResponse>(json);

foreach(var tx in deeplResponseObj.translations) 
    Console.WriteLine("\"{0}\" (from {1})", tx.text, tx.detected_source_language);

以下类定义有助于响应的反序列化：

public class DeepResponse
{
    List<DeepTranslation> translations { get;set; } = new List<DeepTranslation>();
}

public class DeepTranslation
{
    public string detected_source_language { get;set; }
    public string text { get;set; }
}
于 2021-07-25T10:06:11.920 回答