c# - 在 webclient 中编码意外结果

Question

我尝试使用 webclient 将单词“Banana”翻译成 rus

private void button1_Click(object sender, EventArgs e)
    {
        Navigate("http://translate.google.ru/translate_a/t?client=x&text=Banana&hl=en&sl=en&tl=ru");
    }

    private void Navigate(String address)
    {
        WebClient client = new WebClient();            
        client.Proxy = WebRequest.DefaultWebProxy;
        client.Credentials = new NetworkCredential("user", "password", "domain");
        client.Proxy.Credentials = new NetworkCredential("user", "password", "domain");
        string _stranslate = client.DownloadString(new Uri(address));
    }

我想在“_stranslate”中看到

{"sentences":[{"trans":"Банан","orig":"Banana@","translit":"Banan @","src_translit":""}],"src":"en","server_time":0}

但得到了这个

{"sentences":[{"trans":"вБОБО","orig":"Banana@","translit":"Banan @","src_translit":""}],"src":"en","server_time":0}

谁能帮帮我？

Answer 1

尝试检查响应 header ，内容类型告诉您应该使用哪种编码。

Content-Type => text/javascript; charset=KOI8-R

所以只需添加这一行。

client.Encoding = Encoding.GetEncoding(20866);

或

client.Encoding = Encoding.GetEncoding("KOI8-R");

编码的完整列表可以在 Encoding Class 的文档中找到

另一种方法是只使用 System.Net.Mime.ContentType获取字符集。像这样:

byte[] data = client.DownloadData(url);
ContentType contentType = new System.Net.Mime.ContentType(client.ResponseHeaders[HttpResponseHeader.ContentType]);
string _stranslate = Encoding.GetEncoding(contentType.CharSet).GetString(data);