怎么从网站上获取json数据 c#代码
做 一个开奖器需要从网站上获取 json 数据 本人小白一个刚接触
求解 --------------------编程问答-------------------- google “c# 模拟提交” --------------------编程问答--------------------
private static string contentType = "application/x-www-form-urlencoded";
private static string accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-silverlight, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-silverlight-2-b1, */*";
private static string userAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; Zune 4.7; BOIE9;ZHCN)";
public static string referer = "http://ui.ptlogin2.qq.com/cgi-bin/login?appid=1006102&s_url=http://id.qq.com/index.html";
/// <summary>
/// 获取HTML
/// </summary>
/// <param name="url"></param>
/// <param name="cookieContainer"></param>
/// <param name="method">GET or POST</param>
/// <param name="postData">like "username=admin&password=123"</param>
/// <returns></returns>
public static string GetHtml(string url, CookieContainer cookieContainer, string method = "GET", string postData = "")
{
HttpWebRequest httpWebRequest = null;
HttpWebResponse httpWebResponse = null;
try
{
httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
httpWebRequest.CookieContainer = cookieContainer;
httpWebRequest.ContentType = contentType;
httpWebRequest.Referer = referer;
httpWebRequest.Accept = accept;
httpWebRequest.UserAgent = userAgent;
httpWebRequest.Method = method;
httpWebRequest.ServicePoint.ConnectionLimit = int.MaxValue;
if (method.ToUpper() == "POST")
{
byte[] byteRequest = Encoding.Default.GetBytes(postData);
Stream stream = httpWebRequest.GetRequestStream();
stream.Write(byteRequest, 0, byteRequest.Length);
stream.Close();
}
httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
Stream responseStream = httpWebResponse.GetResponseStream();
StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);
string html = streamReader.ReadToEnd();
streamReader.Close();
responseStream.Close();
httpWebRequest.Abort();
httpWebResponse.Close();
return html;
}
catch (Exception)
{
return string.Empty;
}
}
发送请求到目标地址就可以了。 --------------------编程问答--------------------
private static string contentType = "application/x-www-form-urlencoded";
private static string accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-silverlight, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-silverlight-2-b1, */*";
private static string userAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; Zune 4.7; BOIE9;ZHCN)";
public static string referer = "http://ui.ptlogin2.qq.com/cgi-bin/login?appid=1006102&s_url=http://id.qq.com/index.html";
/// <summary>
/// 获取HTML
/// </summary>
/// <param name="url"></param>
/// <param name="cookieContainer"></param>
/// <param name="method">GET or POST</param>
/// <param name="postData">like "username=admin&password=123"</param>
/// <returns></returns>
public static string GetHtml(string url, CookieContainer cookieContainer, string method = "GET", string postData = "")
{
HttpWebRequest httpWebRequest = null;
HttpWebResponse httpWebResponse = null;
try
{
httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
httpWebRequest.CookieContainer = cookieContainer;
httpWebRequest.ContentType = contentType;
httpWebRequest.Referer = referer;
httpWebRequest.Accept = accept;
httpWebRequest.UserAgent = userAgent;
httpWebRequest.Method = method;
httpWebRequest.ServicePoint.ConnectionLimit = int.MaxValue;
if (method.ToUpper() == "POST")
{
byte[] byteRequest = Encoding.Default.GetBytes(postData);
Stream stream = httpWebRequest.GetRequestStream();
stream.Write(byteRequest, 0, byteRequest.Length);
stream.Close();
}
httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
Stream responseStream = httpWebResponse.GetResponseStream();
StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);
string html = streamReader.ReadToEnd();
streamReader.Close();
responseStream.Close();
httpWebRequest.Abort();
httpWebResponse.Close();
return html;
}
catch (Exception)
{
return string.Empty;
}
}
发送请求到目标地址就可以了。 --------------------编程问答-------------------- 非常感谢haukwong 提供的代码分享的，今天学习了 --------------------编程问答-------------------- json 数据必须反序列化回来
补充：.NET技术 , C#
