private void GetPaySign(HttpContext context)
{
//定义统一消息体
Core.Data.Entity.SystemEntity.MessageModel message = new Core.Data.Entity.SystemEntity.MessageModel();
//定义请求工具
HttpGetOrPost httpHelper = new HttpGetOrPost();
//定义重定向URL
string redirect_url1 = HttpUtility.UrlEncode("https://www.yuming.com.cn/auth.aspx");
string redirect_url2 = HttpUtility.UrlEncode("https://www.yuming.com.cn/success.html");
var jsCode = Q("code", context);
if (string.IsNullOrEmpty(jsCode))
{
message.msg = "0";
message.data = "";
context.Response.Write(JsonConvert.SerializeObject(message));
return;
}
#region 第二步，获取openid
string url2 = $"https://api.weixin.qq.com/sns/oauth2/access_token?appid={WechatJSAPIConfig.appid}&secret={WechatJSAPIConfig.appSecret}&code={jsCode}&grant_type=authorization_code";
/* 正确的json
* {
* "access_token":"ACCESS_TOKEN",
* "expires_in":7200,
* "refresh_token":"REFRESH_TOKEN",
* "openid":"OPENID",
* "scope":"SCOPE"
* }
*/
string response2 = httpHelper.HttpGet(url2);
WechatOAuthResponse oauth = JsonConvert.DeserializeObject <WechatOAuthResponse>(response2);
if (oauth == null || !string.IsNullOrEmpty(oauth.errcode))
{
message.msg = "0";
message.data = "";
context.Response.Write(JsonConvert.SerializeObject(message));
}
//拿到OPENID
var openid = oauth.openid;
context.Session["openid"] = oauth.openid;
#endregion
#region 第三步获取access_token
//注意该access_token与授权access_token不一样
string url3 = $"https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={WechatJSAPIConfig.appid}&secret={WechatJSAPIConfig.appSecret}";
string response3 = httpHelper.HttpGet(url3);
WechatAccessResponse access = JsonConvert.DeserializeObject <WechatAccessResponse>(response3);
if (access == null || access.errcode != 0)
{
message.msg = "0";
message.data = "";
context.Response.Write(JsonConvert.SerializeObject(message));
}
//拿到OPENID
string access_token = access.access_token;
#endregion
#region 第四步，获取jsapi_ticket
string url4 = $"https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token={access_token}&type=jsapi";
/* 正确的json
* {
* "errcode":0,
* "errmsg":"ok",
* "ticket":"bxLdikRXVbTPdHSM05e5u5sUoXNKd8-41ZO3MhKoyN5OfkWITDGgnr2fwJ0m9E8NYzWKVZvdVtaUgWvsdshFKA",
* "expires_in":7200
* }*/
string response4 = httpHelper.HttpGet(url4);
WechatTicketResponse ticket = JsonConvert.DeserializeObject <WechatTicketResponse>(response4);
if (ticket == null || ticket.errcode != 0)
{
message.msg = "0";
message.data = "";
context.Response.Write(JsonConvert.SerializeObject(message));
}
//记录ticket
string jsapi_ticket = ticket.ticket;
#endregion
string timestamp = WxPayApi.GenerateTimeStamp();
string nonceStr = WxPayApi.GenerateNonceStr();
context.Session["timestamp"] = timestamp;
context.Session["nonceStr"] = nonceStr;
WxPayData configData = new WxPayData();
configData.SetValue("jsapi_ticket", jsapi_ticket);
configData.SetValue("noncestr", nonceStr);
configData.SetValue("timestamp", timestamp);
configData.SetValue("url", $"https://www.yuming.com.cn/auth.aspx?code={jsCode}&state=STATE");
string sha1sign = configData.SHA1Sign();
var jsBridge = new
{
msg = "200",
appId = WechatJSAPIConfig.appid,
timeStamp = timestamp,
nonceStr = nonceStr,
sha1sign = sha1sign
};
string jsApiData = JsonConvert.SerializeObject(jsBridge);
context.Response.Write(jsApiData);
}
