我目前正在嘗試在 C# (API) 中發送 POST 請求，但是我在內容類型和授權方面遇到了一些麻煩，因為它的格式為 apiHash、apiKey。卷曲示例：curl -i -XPOST https://sandboxapi.g2a.com/v1/order \-H "Authorization: qdaiciDiyMaTjxMt, 74026b3dc2c6db6a30a73e71cdb138b1e1b5eb7a97ced46689e2d28db1050875" \-H 'Content-Type: application/json' \-d '{"product_id": "10000027819004", "max_price": 45.0}'API 文檔：https : //www.g2a.com/integration-api/documentation/#api-Orders-AddOrder這是我到目前為止的代碼：private static readonly HttpClient client = new HttpClient();public async Task < string > makeRequest() { var values = new Dictionary < string, string > { { "product_id", "10000027819004" }, { "max_price", "45.0" } }; var content = new FormUrlEncodedContent(values); AuthenticationHeaderValue authHeaders = new AuthenticationHeaderValue("qdaiciDiyMaTjxMt", "74026b3dc2c6db6a30a73e71cdb138b1e1b5eb7a97ced46689e2d28db1050875"); client.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json; charset=utf-8"); client.DefaultRequestHeaders.Authorization = authHeaders; var response = await client.PostAsync("https://sandboxapi.g2a.com/v1/order", content); var responseString = await response.Content.ReadAsStringAsync(); return responseString;}我嘗試了多種解決方案，但似乎無法將它們全部正確（內容類型、授權和參數）。
2 回答
qq_笑_17
TA貢獻1818條經驗 獲得超7個贊
您必須像這樣設置內容類型：
client.DefaultRequestHeaders
.Accept
.Add(new MediaTypeWithQualityHeaderValue("application/json"));這將解決問題。
慕容708150
TA貢獻1831條經驗 獲得超4個贊
您發送FormUrlEncodedContent的不是 JSON，而 curl 示例正在發送 JSON。
重構您的方法以在StringContent具有正確內容類型集的情況下使用實際序列化的 JSON 字符串。
public async Task<string> makeRequest() {
var values = new {
product_id = "10000027819004",
max_price = 45.0
};
//-d '{"product_id": "10000027819004", "max_price": 45.0}'
var json = JsonConvert.SerializeObject(values); //using Json.Net
var content = new StringContent(json);
var auth = "qdaiciDiyMaTjxMt, 74026b3dc2c6db6a30a73e71cdb138b1e1b5eb7a97ced46689e2d28db1050875";
//-H "Authorization: qdaiciDiyMaTjxMt, 74026b3dc2c6db6a30a73e71cdb138b1e1b5eb7a97ced46689e2d28db1050875" \
client.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", auth);
//-H 'Content-Type: application/json' \
client.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json");
var response = await client.PostAsync("https://sandboxapi.g2a.com/v1/order", content);
var responseString = await response.Content.ReadAsStringAsync();
return responseString;
}
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