使用Flurl的PostUrlEncodedAsync发布数据时,会自动设置以下内容类型:
应用程序/ x-WWW窗体-urlencoded;字符集= UTF-8
如何删除charset = utf-8部分?
我已经尝试过:
flurlClient.ConfigureHttpClient(c => c.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/x-www-form-urlencoded"));
但它不起作用。建议来自:https://stackoverflow.com/a/44548514/915414
答案 0 :(得分:0)
我尝试使用HttpClient实现相同的目标,而不是使用Flurl。那不起作用,所以我为Flurl创建了一个扩展方法。
https://stackoverflow.com/a/44543016/915414建议使用StringContent更改Content-Type:
var jobInJson = JsonConvert.SerializeObject(job);
var json = new StringContent(jobInJson, Encoding.UTF8);
json.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json; odata=verbose");
var flurClient = GetBaseUrlForOperations("Jobs");
return await flurClient.PostAsync(json).ReceiveJson<Job>();
虽然这确实改变了Content-Type,但charset = utf-8仍然存在。
我反编译了System.Net.Http.StringContent以了解它是如何工作的。它默认为charset:
this.Headers.ContentType = new MediaTypeHeaderValue(mediaType == null ? "text/plain" : mediaType)
{
CharSet = encoding == null ? HttpContent.DefaultStringEncoding.WebName : encoding.WebName
};
猜猜是什么...... PostUrlEncodedAsync的核心是StringContent。
所以,我为Flurl创建了一个扩展方法,它使用了类似的StringContent实现,其中CharSet =&#34;&#34 ;;
PostUrlEncodedAsyncWithoutCharset:
public static class HttpExtensions
{
public static Task<HttpResponseMessage> PostUrlEncodedAsyncWithoutCharset(this IFlurlClient client, object data, CancellationToken cancellationToken = default(CancellationToken), HttpCompletionOption completionOption = HttpCompletionOption.ResponseContentRead)
{
CapturedUrlContentCustom urlEncodedContent = new CapturedUrlContentCustom(client.Settings.UrlEncodedSerializer.Serialize(data));
return client.SendAsync(HttpMethod.Post, (HttpContent)urlEncodedContent, new CancellationToken?(cancellationToken), completionOption);
}
}
CapturedUrlContentCustom:
public class CapturedUrlContentCustom : CapturedStringContentCustom
{
public CapturedUrlContentCustom(string data)
: base(data, (Encoding) null, "application/x-www-form-urlencoded")
{
}
}
CapturedStringContentCustom:
public class CapturedStringContentCustom : CustomStringContent
{
public string Content { get; }
public CapturedStringContentCustom(string content, Encoding encoding = null, string mediaType = null)
: base(content, encoding, mediaType)
{
this.Content = content;
}
}
CustomStringContent:
public class CustomStringContent : ByteArrayContent
{
private const string defaultMediaType = "application/x-www-form-urlencoded";
public CustomStringContent(string content)
: this(content, (Encoding)null, (string)null)
{
}
public CustomStringContent(string content, Encoding encoding)
: this(content, encoding, (string)null)
{
}
public CustomStringContent(string content, Encoding encoding, string mediaType)
: base(CustomStringContent.GetContentByteArray(content, encoding))
{
this.Headers.ContentType = new MediaTypeHeaderValue(mediaType == null ? "application/x-www-form-urlencoded" : mediaType)
{
CharSet = ""
};
}
private static byte[] GetContentByteArray(string content, Encoding encoding)
{
if (content == null)
throw new ArgumentNullException(nameof(content));
if (encoding == null)
encoding = Encoding.UTF8;
return encoding.GetBytes(content);
}
}
现在,您可以调用PostUrlEncodedAsyncWithoutCharset,并且不会出现charset = utf-8。