private object SignRequest(SdkDictionary parameters, string apiKey)
{
// 第一步：把字典按Key的字母顺序排序
IDictionary <string, string> sortedParams = new SortedDictionary <string, string>(parameters);
IEnumerator <KeyValuePair <string, string> > dem = sortedParams.GetEnumerator();
// 第二步：把所有参数名和参数值串在一起 ：将AppSecret拼接到参数字符串头和尾
StringBuilder query = new StringBuilder();
query.Append(apiKey);
while (dem.MoveNext())
{
string key = dem.Current.Key;
string value = dem.Current.Value;
if (!string.IsNullOrEmpty(key) && !string.IsNullOrEmpty(value))
{
query.Append(key);
query.Append(value);
}
}
query.Append(apiKey);
// 第三步：使用MD5加密
MD5 md5 = new MD5CryptoServiceProvider();
byte[] data = Encoding.GetEncoding("GBK").GetBytes(query.ToString());
byte[] md5Data = md5.ComputeHash(data);
md5.Clear();
return(BitConverter.ToString(md5Data).Replace("-", "").ToUpper());
}
/// <summary>
/// 执行公开API请求。
/// </summary>
/// <typeparam name="T">领域对象</typeparam>
/// <param name="request">具体的API请求</param>
/// <returns>领域对象</returns>
public T Execute <T>(IRequest <T> request) where T : IResponse
{
// 添加系统级请求参数
SdkDictionary txtParams = new SdkDictionary(request.GetParameters());
txtParams.Add("method", request.GetApiNameOrUrl());
txtParams.Add("timestamp", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
txtParams.Add("format", "xml");
txtParams.Add("app_key", this._apiKey);
txtParams.Add("v", "1.0");
txtParams.Add("sign_method", "md5");
txtParams.Add("session", this._sessionKey);
// 添加签名参数
SdkDictionary signParams = new SdkDictionary();
signParams.Add("app_key", _apiKey);
signParams.Add("format", "xml");
signParams.Add("method", request.GetApiNameOrUrl());
signParams.Add("session", this._sessionKey);
signParams.Add("sign_method", "md5");
signParams.Add("timestamp", DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
//signParams.Add("secret", _appSecret);
signParams.Add("v", "1.0");
txtParams.Add("sign", SignRequest(signParams, _appSecret));
// 是否需要上传文件
string body;
WebUtils webUtils = new WebUtils();
webUtils.Charset = "GBK";
if (request is IUploadRequest <T> )
{
IUploadRequest <T> uRequest = (IUploadRequest <T>)request;
IDictionary <string, FileItem> fileParams = Utils.CleanupDictionary(uRequest.GetFileParameters());
body = webUtils.DoPost(_appUrl, txtParams, fileParams);
}
else
{
body = webUtils.DoGet(_appUrl, txtParams);
}
T rsp;
IParser <T> tp = new XmlParser <T>();
rsp = tp.Parse(body, Encoding.GetEncoding("GBK"));
return(rsp);
}
