使用HttpClient調用xml內容

Question

如何使xml內容與HttpClient's內容HttpClient's PostAsync操作兼容，以及在何處指定Content-Type = application/xml的headers 。

錯誤 - >無法將字符串轉換為HttpContent

public async Task GetCustomersAsync(string firstname, string lastname)
{
        using (var client = new HttpClient())
        {
            var content = "<soapenv:Envelope xmlns:xsi...";

            var response = await client.PostAsync("https://domain.com/scripts/WebObj.exe/Client.woa/2/ws/ABC", content);

            var responseString = await response.Content.ReadAsStringAsync();
        }
    }

Answer 1

我的猜測是你想要做的是以下幾點：

public async Task<string> GetCustomersAsync(string firstname, string lastname)
{
    using (var client = new HttpClient())
    {
        var content = new StringContent("<soapenv:Envelope xmlns:xsi...", Encoding.UTF8, "application/xml");;

        var response = await client.PostAsync("https://example.com/scripts/WebObj.exe/Client.woa/2/ws/ABC", content);

        return await response.Content.ReadAsStringAsync();
    }
}

要么

using (var request = new HttpRequestMessage { RequesteUri = new Uri("POST_URL"), Method = HttpMethod.Post })
{
    var content = new StringContent("<soapenv:Envelope xmlns:xsi...");
    request.Content.Headers.ContentType = new MediaTypeHeaderValue("application/xml");
}

您可以在此處參考有關可以創建和傳遞的其他內容類型的更多信息。

Answer 2

要在響應中專門請求xml內容，您必須在內容的標題中定義內容類型。 MediaTypeHeaderValue在內容標頭的ContentType屬性中進行解析和設置。 這是代碼的完整示例;

using (var client = new HttpClient())
{
    var content = new StringContent(messageToPOST, Encoding.UTF8, "text/xml");
    content.Headers.ContentType = MediaTypeHeaderValue.Parse("text/xml");
    response = await client.PostAsync(_uri, content);
    responseMsg = await response.Content.ReadAsStringAsync();
}

請求返回的responseMsg屬性作為響應可以解析為字符串，否則使用諸如表達式之類的表達式轉換為xml並驗證為xml

XDocument xdoc = XDocument.Parse(responseMsg);
string xmlAsString = xdoc.ToString();