分类:
微信支付
/// <summary>
/// JSApi 调用类
/// </summary>
public class WxPayJsApi
{
//获取 调起支付 API参数
public string GetJsApiParameters(string prepay_id)
{
WcPayChooseRequest request = new WcPayChooseRequest(
WxPayConfig.APPID,
WxPayUitls.GenerateTimeStampString(),
WxPayUitls.GenerateNonceStr(),
"prepay_id=" + prepay_id, "RSA");
request.paySign = WxPayEncrypt.MakePaySign(request.GetMessage(request));
string parameters = request.ToJsonStr();
return parameters;
}
/// <summary>
/// 返回 config 注入参数
/// </summary>
/// <param name="url"></param>
/// <returns></returns>
public string GetJsApiConfig(string url)
{
WxPayApiJSDK config = new WxPayApiJSDK(true,
WxPayConfig.APPID,
WxPayUitls.GenerateTimeStampString(),
WxPayUitls.GenerateNonceStr(), url
);
//正式上线 需要添加正确api列表
var enumValues = Enum.GetValues(typeof(WechatPayApiEnum));
foreach (Enum value in enumValues)
{
config.JsApiList.Add(value.ToString());
}
string parameters = config.ToJsonToFrontStr();
return parameters;
}
}
/// <summary>
/// 注入 JSDK config 类
/// </summary>
public class WxPayApiJSDK
{
private bool debug;
private string appId;
private string timestamp;
private string nonceStr;
private string signature;
private List<string> jsApiList = new List<string>();
private string url;
private string tokenUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}";
public WxPayApiJSDK(bool debug, string appId, string timestamp, string nonceStr, string url)
{
this.debug = debug;
this.appId = appId;
this.timestamp = timestamp;
this.nonceStr = nonceStr;
this.url = url;
this.signature = GetConfigSignature();
}
/// <summary>
/// 是否开启调试模式
/// </summary>
public bool Debug
{
get
{
return debug;
}
set
{
debug = value;
}
}
/// <summary>
/// 必填，公众号的唯一标识
/// </summary>
public string AppId
{
get
{
return appId;
}
set
{
appId = value;
}
}
/// <summary>
/// 必填，生成签名的时间戳
/// </summary>
public string Timestamp
{
get
{
return timestamp;
}
set
{
timestamp = value;
}
}
/// <summary>
/// 必填，生成签名的随机串
/// </summary>
public string NonceStr
{
get
{
return nonceStr;
}
set
{
nonceStr = value;
}
}
/// <summary>
/// 必填，签名
/// </summary>
public string Signature
{
get
{
return signature;
}
set
{
signature = value;
}
}
/// <summary>
/// 必填，需要使用的JS接口列表
/// </summary>
public List<string> JsApiList
{
get
{
return jsApiList;
}
set
{
jsApiList = value;
}
}
public string Url
{
get
{
return url;
}
set
{
url = value;
}
}
/// <summary>
/// 生成注入config签名
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
private string GetConfigSignature()
{
Hashtable hs = new Hashtable();
hs.Add("jsapi_ticket", Getjsapi_ticket());//获取的
hs.Add("noncestr", NonceStr);
hs.Add("timestamp", Timestamp);
hs.Add("url", Url);
//得到string1
string string1 = formatParameters(hs);
//对string1进行sha1签名
Signature = GetHashSigntrue(string1);
return Signature;
}
/// <summary>
/// 参数名ASCII码从小到大排序（字典序）
/// </summary>
/// <param name="parameters"></param>
/// <returns></returns>
private string formatParameters(Hashtable parameters)
{
StringBuilder sb = new StringBuilder();
ArrayList akeys = new ArrayList(parameters.Keys);
akeys.Sort();
foreach (string k in akeys)
{
string v = (string)parameters[k];//防止参数不是字符串
sb.Append(k.ToLower() + "=" + v + "&");
}
//去掉最后一个&
if (sb.Length > 0)
{
sb.Remove(sb.Length - 1, 1);
}
return sb.ToString();
}
/// <summary>
/// 进行sha1签名
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string HashCode(string str)
{
string rethash = "";
try
{
SHA1 hash = SHA1.Create();
rethash = Convert.ToBase64String(hash.ComputeHash(Encoding.UTF8.GetBytes(str)));
}
catch (Exception ex)
{
string strerr = "Error in HashCode : " + ex.Message;
}
return rethash;
}
public string GetHashSigntrue(string str)
{
var sha1 = new SHA1Managed();
var sha1bytes = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(str);
byte[] resultHash = sha1.ComputeHash(sha1bytes);
string sha1String = BitConverter.ToString(resultHash).ToLower();
sha1String = sha1String.Replace("-", "");
return sha1String;
}
public string GetAccess_Token()
{
var cache = CacheHelper.Instance;
string access_token = string.Empty;
if (cache.GetValue(WxPayCacheKeys.JSAPI_TICKET) == null)
{
string AppID = WxPayConfig.APPID;
string AppSecret = WxPayConfig.APPSECRET;
string url = string.Format(tokenUrl, AppID, AppSecret);
System.Net.WebRequest wrq = System.Net.WebRequest.Create(url);
wrq.Method = "GET";
System.Net.WebResponse wrp = wrq.GetResponse();
System.IO.StreamReader sr = new System.IO.StreamReader(wrp.GetResponseStream(), System.Text.Encoding.GetEncoding("UTF-8"));
string strResult = sr.ReadToEnd();
JObject pairs = JObject.Parse(strResult);
access_token = pairs["access_token"].ToString();
}
else access_token = cache.GetValue(WxPayCacheKeys.ACCESS_TOKEN).ToString();
return access_token;
}
/// <summary>
/// 签名所需要的凭证
/// </summary>
/// <returns></returns>
public string Getjsapi_ticket()
{
var cache = CacheHelper.Instance;
string Jsapi_ticket = string.Empty;
string access_token = string.Empty;
if (cache.GetValue(WxPayCacheKeys.JSAPI_TICKET) == null)
{
string url = string.Empty;
string strResult = string.Empty;
System.Net.WebRequest wrq = null;
System.Net.WebResponse wrp = null;
System.IO.StreamReader sr = null;
JObject pairs = null;
if (cache.GetValue(WxPayCacheKeys.ACCESS_TOKEN) == null)
{
string AppID = WxPayConfig.APPID;
string AppSecret = WxPayConfig.APPSECRET;
url = string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", AppID, AppSecret);
wrq = System.Net.WebRequest.Create(url);
wrq.Method = "GET";
wrp = wrq.GetResponse();
sr = new System.IO.StreamReader(wrp.GetResponseStream(), System.Text.Encoding.GetEncoding("UTF-8"));
strResult = sr.ReadToEnd();
pairs = JObject.Parse(strResult);
if (!strResult.Contains("access_token"))
{
return "not in whitelist rid";
}
access_token = pairs["access_token"].ToString();
sr.Close();
}
else
{
access_token = cache.GetValue(WxPayCacheKeys.ACCESS_TOKEN).ToString();
}
url = string.Format("https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token={0}&type=jsapi", access_token);
wrq = System.Net.WebRequest.Create(url);
wrp = wrq.GetResponse();
sr = new System.IO.StreamReader(wrp.GetResponseStream(), System.Text.Encoding.GetEncoding("UTF-8"));
string backStr = sr.ReadToEnd();
pairs = JObject.Parse(backStr);
var code = pairs["errcode"].ToString();
if (code != "0")
{
return pairs["errmsg"].ToString();
}
Jsapi_ticket = pairs["ticket"].ToString();
cache.InsertAndAbsoluteExp(WxPayCacheKeys.ACCESS_TOKEN, access_token, WxPayCacheKeys.ExpirationTime);//写入缓存
cache.InsertAndAbsoluteExp(WxPayCacheKeys.JSAPI_TICKET, Jsapi_ticket, WxPayCacheKeys.ExpirationTime);//写入缓存
}
else Jsapi_ticket = cache.GetValue(WxPayCacheKeys.JSAPI_TICKET).ToString();
return Jsapi_ticket;
}
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