/// <summary>
/// 调用百度云推送API
/// </summary>
/// <param name="pChannel">通道</param>
/// <param name="pHttpMethod">REST API调用时采用的HTTP Method</param>
/// <param name="pRequest">请求内容</param>
/// <returns></returns>
public static BaiduPushMessageResponse Call(BaiduChannel pChannel, HttpMethods pHttpMethod, BaiduPushMessageRequest pRequest)
{
//参数检查
if (pChannel == null)
{
throw new ArgumentNullException("pChannel");
}
if (pRequest == null)
{
throw new ArgumentNullException("pRequest");
}
//先移除签名
pRequest.InnerDictionary.Remove("sign");
//设置请求的时间戳
if (pRequest.Timestamp == null)
{
pRequest.SetTimestampToNow();
}
//将渠道中的信息设置到请求中
pRequest.APIKey = pChannel.APIKey;
pRequest.SecretKey = pChannel.SecretKey;
//参数按键排序
var parameters = pRequest.InnerDictionary.OrderBy(item => item.Key).ToList();
//拼接字符串
var strParameters = new StringBuilder();
foreach (var p in parameters)
{
if (p.Value != null)
{
if (p.Value is string)
{
strParameters.AppendFormat("{0}={1}", p.Key, p.Value);
}
else
{
strParameters.AppendFormat("{0}={1}", p.Key, p.Value.ToJSON());
}
}
}
var strRequest = new StringBuilder();
strRequest.AppendFormat("{0}{1}{2}{3}", pHttpMethod.GetDescription(), pChannel.URL, strParameters, pChannel.SecretKey);
var request = HttpUtility.UrlEncode(strRequest.ToString());
//
//request = "POSThttp%3a%2f%2fchannel.api.duapp.com%2frest%2f2.0%2fchannel%2fchannelapikey%3dIpgepOSN5ciRbZXmaKDylV6rchannel_id%3d4545034400365506418device_type%3d3message_type%3d1messages%3d%7b%22title%22%3a%22%e6%b5%8b%e8%af%953%22%2c%22description%22%3a%22%e6%b5%8b%e8%af%953Foo%22%2c%22notification_builder_id%22%3a0%2c%22notification_basic_style%22%3a0%2c%22open_type%22%3a0%2c%22url%22%3a%22%22%2c%22user_confirm%22%3a0%2c%22pkg_content%22%3a%22%22%2c%22custom_content%22%3a%22%22%7dmethod%3dpush_msgmsg_keys%3dde8a3ba2345141abbd98d0565ddd452dpush_type%3d1timestamp%3d1386055916user_id%3d974907629901019623tWAhw2tIZrUnjynOqgELXX5CUuC18uHs";
//计算签名
var signSB = new StringBuilder();
int perIndex = 0;
for (int i = 0; i < request.Length; i++)
{
var c = request[i].ToString();
if (request[i] == '%')
{
perIndex = i;
}
if (i - perIndex == 1 || i - perIndex == 2)
{
c = c.ToUpper();
}
signSB.Append(c);
}
var sign = FormsAuthentication.HashPasswordForStoringInConfigFile(signSB.ToString(), "MD5").ToLower();
pRequest.Sign = sign;
//组织POST的键值对字符串
var postSB = new StringBuilder();
foreach (var p in parameters)
{
if (p.Value != null)
{
if (p.Value is string)
{
postSB.AppendFormat("{0}={1}&", p.Key, p.Value);
}
else
{
postSB.AppendFormat("{0}={1}&", p.Key, p.Value.ToJSON());
}
}
}
postSB.AppendFormat("sign={0}", sign);
//发送请求
var postData = Encoding.UTF8.GetBytes(postSB.ToString());
WebClient wc = new WebClient();
var strResponse = string.Empty;
try
{ //200响应
wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded"); //采取POST方式必须加的header，如果改为GET方式的话就去掉这句话即可
byte[] responseData = wc.UploadData(pChannel.URL, "POST", postData); //得到返回字符流
strResponse = Encoding.UTF8.GetString(responseData);
}
catch (WebException ex)
{//非200的响应
using (var sr = new StreamReader(ex.Response.GetResponseStream()))
{
strResponse = sr.ReadToEnd();
}
}
if (string.IsNullOrWhiteSpace(strResponse))
{
return(null);
}
else
{
return(strResponse.DeserializeJSONTo <BaiduPushMessageResponse>());
}
}