Question

我试图编写一个C＃脚本，它实际上与我通过某个网页的UI提交表单时的行为相同。这是在不使用Cookie的网站的公共页面上。我在“网络”标签中查看了Chrome，以了解我在提交评论时在请求/响应中发生的情况

我试图在C＃land中模仿它：

                    CommentFormData data = CommentFormData.GenerateRandom();
                    string json = new JavaScriptSerializer().Serialize(data);
                    StringContent content = new StringContent(json, Encoding.UTF8);
                    content.Headers.TryAddWithoutValidation("Accept", "text/javascript, text/html, application/xml, text/xml, */*");
                    content.Headers.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate, br");
                    content.Headers.TryAddWithoutValidation("Accept-Language", "en-US,en;q=0.8");
                    content.Headers.TryAddWithoutValidation("Connection", ";eep-alive");
                    content.Headers.TryAddWithoutValidation("Content-Length", json.Length.ToString());
                    content.Headers.TryAddWithoutValidation("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
                    content.Headers.TryAddWithoutValidation("Host", "...");
                    content.Headers.TryAddWithoutValidation("Origin", "...");
                    content.Headers.TryAddWithoutValidation("Referer", "...);
                    content.Headers.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36");
                    content.Headers.TryAddWithoutValidation("X-Prototype-Version", "1.6.1");
                    content.Headers.TryAddWithoutValidation("X-Requested-With", "XMLHttpRequest");
                    HttpResponseMessage response = await client.PostAsync("...", content);

.....

internal class CommentFormData
{
    public string pageID { get; } = "...";
    public string comment { get; set; }
    public string author { get; set; }
    public string email { get; set; }
    public int timezone { get; } = -7;

    public static CommentFormData GenerateRandom()
    {
        return new CommentFormData()
        {
            comment = GenerateRandomString(),
            author = GenerateRandomString(),
            email = $"{GenerateRandomString()}@gmail.com"
        };
    }

    private static string GenerateRandomString(int length = 100)
    {
        Random random = new Random();
        return new string(Enumerable.Repeat("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789", length)
          .Select(s => s[random.Next(s.Length)]).ToArray());
    }
}

我正在取回状态代码200，但它的工作方式不同。我得到的回应是

StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  Transfer-Encoding: chunked
  Connection: keep-alive
  Keep-Alive: timeout=20
  Vary: Accept-Encoding
  Date: Sat, 10 Jun 2017 20:44:36 GMT
  Server: nginx
  Content-Type: text/xml; charset=utf-8
}

那为什么这不起作用？有什么想法吗？

Answer 1

我认为您应该查看System.Net.Http.HttpsClient类：https://msdn.microsoft.com/en-us/library/system.net.http.httpclient(v=vs.118).aspx

使用此calss异步构造和执行请求，并读取其响应的内容。

模拟网页表单通过C＃提交POST

1 个答案: