/// <summary>
/// 执行HTTP GET请求。
/// </summary>
/// <param name="url">请求地址</param>
/// <param name="parameters">请求参数</param>
/// <returns>HTTP响应</returns>
public string DoGet(string url, IDictionary <string, string> parameters)
{
if (parameters != null && parameters.Count > 0)
{
if (url.Contains("?"))
{
url = url + "&" + BuildQuery(parameters);
}
else
{
url = url + "?" + BuildQuery(parameters);
}
}
HttpWebRequest req = GetWebRequest(url, "GET");
req.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
if (WebUtils.IsNullOrWhiteSpace(rsp.CharacterSet))
{
return(GetResponseAsString(rsp, Encoding.UTF8));
}
else
{
Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
return(GetResponseAsString(rsp, encoding));
}
}
/// <summary>
/// 获取Json string某节点的值。
/// </summary>
/// <param name="json"></param>
/// <param name="key"></param>
/// <returns></returns>
public static string GetJosnValue(string jsonStr, string key)
{
string result = string.Empty;
if (!WebUtils.IsNullOrWhiteSpace(jsonStr))
{
key = "\"" + key.Trim('"') + "\"";
int index = jsonStr.IndexOf(key) + key.Length + 1;
if (index > key.Length + 1)
{
//先截逗号，若是最后一个，截“｝”号，取最小值
int end = jsonStr.IndexOf(',', index);
if (end == -1)
{
end = jsonStr.IndexOf('}', index);
}
//index = json.IndexOf('"', index + key.Length + 1) + 1;
result = jsonStr.Substring(index, end - index);
//过滤引号或空格
result = result.Trim(new char[] { '"', ' ', '\'' });
}
}
return(result);
}
/// <summary>
/// 执行HTTP POST请求。
/// </summary>
/// <param name="url">请求地址</param>
/// <param name="parameters">请求参数</param>
/// <returns>HTTP响应</returns>
public string DoPost(string url, IDictionary <string, string> parameters)
{
HttpWebRequest req = GetWebRequest(url, "POST");
req.ContentType = "application/x-www-form-urlencoded;charset=utf-8";
byte[] postData = Encoding.UTF8.GetBytes(BuildQuery(parameters));
System.IO.Stream reqStream = req.GetRequestStream();
reqStream.Write(postData, 0, postData.Length);
reqStream.Close();
HttpWebResponse rsp = (HttpWebResponse)req.GetResponse();
if (WebUtils.IsNullOrWhiteSpace(rsp.CharacterSet))
{
return(GetResponseAsString(rsp, Encoding.UTF8));
}
else
{
Encoding encoding = Encoding.GetEncoding(rsp.CharacterSet);
return(GetResponseAsString(rsp, encoding));
}
}
public bool DownloadFile(string url, string thumb_media_id, string saveDir, out string saveFileName, out string errHtml)
{
if (url.IndexOf("showqrcode") != -1)
{
return(DownloadQrCode(url, saveDir, out saveFileName, out errHtml));
}
saveFileName = string.Empty;
errHtml = string.Empty;
bool isSuc = false;
HttpWebResponse response = null;
HttpWebRequest request = null;
try
{
request = GetWebRequest(url, "GET");
// if (url.IndexOf("showqrcode") != -1)
//{
// request.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0";
//}
response = (HttpWebResponse)request.GetResponse();
if (!response.ContentType.ToLower().StartsWith("text/"))
{
string disp = response.Headers.Get("Content-type");
string ext = "." + disp.Substring(disp.LastIndexOf("/") + 1);
saveFileName = saveDir;
if (!saveFileName.EndsWith("\\"))
{
saveFileName += "\\";
}
saveFileName = thumb_media_id + ext;
string saveName = saveDir + saveFileName;
SaveBinaryFile(response, saveName);
isSuc = true;
}
else
{
if (WebUtils.IsNullOrWhiteSpace(response.CharacterSet))
{
errHtml = GetResponseAsString(response, Encoding.UTF8);
}
else
{
Encoding encoding = Encoding.GetEncoding(response.CharacterSet);
errHtml = GetResponseAsString(response, encoding);
}
isSuc = false;
}
}
finally
{
if (response != null)
{
response.Close();
}
if (request != null)
{
request = null;
}
}
return(isSuc);
}