Question

我正在使用HttpClient。我发布了web表单参数。其中一个值（不是名字）是外国瑞典人字符ö，＃246; öASCII：Latin Small Letter O Umlaut

手动，IE，Firefox和Chrome都将此角色转换为S％F6k，一切正常。然而，VS 2012 C＃版本将其（通过FormUrlEncodedContent（dict））转换为％C3％B6

有没有办法告诉VS 2012将其转换为友好的S％F6k（仍然使用HttpClient）？

我附上了大部分代码，可能会帮助其他代码（Cookie，代理等等）

// Create Handler
var handler = new HttpClientHandler();

// Cookies
var cc = new CookieContainer();
handler.CookieContainer = cc;

// Proxy - for fiddler
WebProxy proxy = new WebProxy();
proxy.Address = new Uri("http://localhost:8888");
handler.Proxy = proxy;

// Create the client
var client = new HttpClient(handler);

var request4 = new HttpRequestMessage();

client.DefaultRequestHeaders.Clear();
client.DefaultRequestHeaders.Add("Accept", "text/html, application/xhtml+xml, */*");
client.DefaultRequestHeaders.Add("Accept-Encoding", "gzip, deflate");
client.DefaultRequestHeaders.Add("Accept-Language", "en-US,en;q=0.8,sv-SE;q=0.5,sv;q=0.3");
client.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; WOW64; Trident/6.0)");

// Form Data
var dict4 = new Dictionary<string, string>
{
    { "page", "kantlista" },
    { "kod", "A0004n" },
    { "termin", "H12" },
    { "anmkod", "17113" },
    { "urval", "ant" },
    { "listVal", "namn" },
    { "method", "Sök" } // S%F6k
}; // dict

request4.Content = new FormUrlEncodedContent(dict4);

var value4 = new FormUrlEncodedContent(dict4);
string uri4 = "https://www.ltu.se/ideal/ListaKursant.do";
var response4 = await client.PostAsync(uri4, value4);
response4.Headers.Add("Cache-Control", "no-cache")
response4.EnsureSuccessStatusCode();
string responseBody4 = await response4.Content.ReadAsStringAsync();

Answer 1

FormUrlEncodedContent类以utf8编码对表单数据进行编码尝试ByteArrayContent类和HttpUtility.UrlEncode(String, Encoding)进行编码。

Answer 2

只需完成@TylerTsai的答案

替换

var dict = new Dictionary<string, string>();
dict.Add("param1", value1);
dict.Add("param1", value2);

var response = await httpClient.PostAsync(endpoint, new FormUrlEncodedContent(dict));

使用

 string postData = HttpUtility.UrlEncode(
       $"param1={value1}&param2={value2}",Encoding.GetEncoding(myEncoding));
 byte[] data = System.Text.Encoding.GetEncoding(myEncoding).GetBytes(postData);
 ByteArrayContent content = new ByteArrayContent(data);
 content.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
 
 var response = await httpClient.PostAsync(endpoint, content);

C＃HttpClient FormUrlEncodedContent编码（VS 2012）

2 个答案: