/// <summary>
/// 构成URL参数的sign值
/// </summary>
/// <param name="dic">参数的字典集合</param>
/// <param name="key">安全校验码</param>
/// <returns>返回sign的值</returns>
/// <remarks>参与加密的参数存入Dictionary，参数的值不允许为空，若该参数为空，不要把这个参数加到Dictionary集合里面</remarks>
public static string GetSign(Dictionary <string, string> dic, string key)
{
//构造数组
string[] Oristr = new string[dic.Count];
int ct = 0;
foreach (KeyValuePair <string, string> entry in dic)
{
if (!String.IsNullOrEmpty(entry.Value))
{
Oristr[ct] = entry.Key + "=" + entry.Value;
ct++;
}
}
//进行排序
string[] Sortedstr = Alipay.BubbleSort(Oristr);
//构造待md5摘要字符串
System.Text.StringBuilder prestr = new System.Text.StringBuilder();
for (int i = 0; i < Sortedstr.Length; i++)
{
if (i == Sortedstr.Length - 1)
{
prestr.Append(Sortedstr[i]);
}
else
{
prestr.Append(Sortedstr[i] + "&");
}
}
prestr.Append(key);//追加key
//生成Md5摘要
return(Alipay.GetMD5(prestr.ToString(), _Input_Charset));
}
/// <summary>
/// 构造md5签名字符串
/// </summary>
/// <param name="nvc">NameValues集合</param>
/// <param name="key">安全校验码</param>
/// <returns>返回排序后的字符串（自动剔除末尾的sign和sign_type类型）</returns>
private string BuildSignString(System.Collections.Specialized.NameValueCollection nvc, string key)
{
string[] Sortedstr = Alipay.BubbleSort(nvc.AllKeys); //对参数进行排序
StringBuilder prestr = new StringBuilder(); //构造待md5摘要字符串
for (int i = 0; i < Sortedstr.Length; i++)
{
if (nvc.Get(Sortedstr[i]) != "" && Sortedstr[i] != "sign" && Sortedstr[i] != "sign_type")
{
if (i == Sortedstr.Length - 1)
{
prestr.Append(Sortedstr[i] + "=" + nvc.Get(Sortedstr[i]));
}
else
{
prestr.Append(Sortedstr[i] + "=" + nvc.Get(Sortedstr[i]) + "&");
}
}
}
prestr.Append(key);//追加key
return(prestr.ToString());
}