HTTP 响应中的无效字符集

Question

我正在为 Windows Phone 8.1 编写 C# 应用程序。应用程序向带有 post 数据的网页发送 http 请求，但是，当我将请求内容复制到字符串时，它会抛出异常。

这是代码，

var values = new List<KeyValuePair<string, string>>
    {
        new KeyValuePair<string, string>("username", "usernameHere"),
        new KeyValuePair<string, string>("password", "passwordHere"),
    };

var httpClient = new HttpClient(new HttpClientHandler());
var response = await httpClient.PostAsync(new Uri(LOGIN_URL), new FormUrlEncodedContent(values));

if (response.IsSuccessStatusCode)
{
    string responseString = "";

    try
    {
        responseString = await response.Content.ReadAsStringAsync();
    }

    catch (Exception e)
    {
        MessageBox.Show("Exception caught " + e);
    }
}

错误是，

"System.InvalidOperationException: The character set provided in ContentType is invalid. Cannot read content as string using an invalid character set. ---> System.ArgumentException: 'ISO8859_1' is not a supported encoding name."

显然解决方案是使用 GetByteArrayAsync 而不是 PostAsync ()，但这样我无法提交 post 数据。

Answer 1

Apparently the solution is to use GetByteArrayAsync instead of PostAsync

不，你可以使用 HttpContent class

的 ReadAsByteArrayAsync 方法

byte[] data = await response.Content.ReadAsByteArrayAsync();

Answer 2

某些服务器响应可能包含无效字符集，在这种情况下 'ISO8859_1' 无效。解决这种情况的另一种方法是将字符集更改为正确的值，然后再读取为字符串：

responseMessage.Content.Headers.ContentType.CharSet = @"ISO-8859-1";
responseString = await response.Content.ReadAsStringAsync();

HTTP 响应中的无效字符集

Invalid Charset in HTTP response

.net

c#

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