关于微信开发与微信支付更新

1.)微信开发一般就是看文档，按部就班调用API就行，推荐一些SDK
.NET
https://github.com/JeffreySu/WeiXinMPSDK
JAVA
http://git.oschina.net/pyinjava/fastweixin
NodeJS
https://github.com/node-weixin/node-weixin-api
Python
http://git.oschina.net/jeffkit/wechat

2.)在之前的文章微信支付[v3]中，说过V2升V3的一些记录，签名的方式JSSDK方式，现新的微信支付已经不需要依赖于JSSDK

微信消息配置

已.NET 为例子，WeiXinMPSDK支持公众号与企业号，实现起来也比较简单

/// <summary>
/// 微信控制器
/// </summary>
public class WeixinController : Controller
{
private static readonly Logger logger = LogManager.GetCurrentClassLogger();
public readonly string token = DbSetting.getAppText("Token");
public readonly string appId = DbSetting.getAppText("AppID");
public readonly string encodingAESKey = DbSetting.getAppText("EncodingAESKey");

/// <summary>
/// 微信验签
/// </summary>
/// <param name="signature"></param>
/// <param name="timestamp"></param>
/// <param name="nonce"></param>
/// <param name="echostr"></param>
/// <returns></returns>
[HttpGet]
public async Task<ActionResult> Index(string signature, string timestamp, string nonce, string echostr)
{
return await Task.Run(() =>
{
if (!CheckSignature.Check(signature, timestamp, nonce, token))
{
return "failed:" + signature + "," + CheckSignature.GetSignature(timestamp, nonce, token) + "。如果你在浏览器中看到这句话，说明此地址可以被作为微信公众账号后台的Url，请注意保持Token一致。";
}
return echostr;
}).ContinueWith(task => Content(task.Result));
}

/// <summary>
/// 处理微信消息
/// </summary>
/// <param name="postModel">参数</param>
/// <returns></returns>
[HttpPost]
public async Task<ActionResult> Index(PostModel postModel)
{
return await Task.Run<ActionResult>(() =>

{
if (!CheckSignature.Check(postModel.Signature, postModel.Timestamp, postModel.Nonce, token))
{
return new WeixinResult("参数错误！");
}
postModel.Token = token;
postModel.EncodingAESKey = encodingAESKey;
postModel.AppId = appId;
var messageHandler = new MpWeixinMessageHandler(Request.InputStream, postModel);
messageHandler.Execute();
return new FixWeixinBugWeixinResult(messageHandler);
}).ContinueWith(task => task.Result);
}
}

消息重载

/// <summary>
/// 处理微信消息
/// </summary>
public class MpWeixinMessageHandler : MessageHandler<MessageContext<IRequestMessageBase, IResponseMessageBase>>
{
private static readonly Logger logger = LogManager.GetCurrentClassLogger();
public readonly string appId = DbSetting.getAppText("AppID");
public readonly string appSecret = DbSetting.getAppText("AppSecret");

/// <summary>
/// 构造函数
/// </summary>
/// <param name="inputStream"></param>
/// <param name="postModel"></param>
public MpWeixinMessageHandler(Stream inputStream, PostModel postModel)
: base(inputStream, postModel)
{
WeixinContext.ExpireMinutes = 5;
}

/// <summary>
/// 默认消息 [没有重写的OnXX方法，将默认返回DefaultResponseMessage中的结果]
/// </summary>
/// <param name="requestMessage"></param>
/// <returns></returns>

public override IResponseMessageBase DefaultResponseMessage(IRequestMessageBase requestMessage)
{
//ResponseMessageText也可以是News等其他类型
var responseMessage = this.CreateResponseMessage<ResponseMessageText>();
responseMessage.Content = "这条消息来自DefaultResponseMessage。";
return responseMessage;
}

/// <summary>
/// 关注微信公众号
/// </summary>
/// <param name="requestMessage"></param>
/// <returns></returns>
public override IResponseMessageBase OnEvent_SubscribeRequest(RequestMessageEvent_Subscribe requestMessage)
{
var responseMessage = ResponseMessageBase.CreateFromRequestMessage<ResponseMessageText>(requestMessage);
var token = CommonApi.GetToken(appId, appSecret).access_token;
var user = CommonApi.GetUserInfo(token, requestMessage.FromUserName);
responseMessage.Content = "Hi " + user.nickname + " ,感谢您关注XXX！！！";
return responseMessage;
}

/// <summary>
/// 取消关注公众号
/// </summary>
/// <param name="requestMessage"></param>
/// <returns></returns>
public override IResponseMessageBase OnEvent_UnsubscribeRequest(RequestMessageEvent_Unsubscribe requestMessage)
{
return base.OnEvent_UnsubscribeRequest(requestMessage);
}

/// <summary>
/// 发送文本消息
/// </summary>
/// <param name="requestMessage"></param>
/// <returns></returns>
public override IResponseMessageBase OnTextRequest(RequestMessageText requestMessage)
{
var responseMessage = ResponseMessageBase.CreateFromRequestMessage<ResponseMessageText>(requestMessage);
responseMessage.Content = "感谢您关注XXX！！！ ";
return responseMessage;
}
}

微信支付签名

#region 创建订单与生成微信支付 JSAPPI 签名
/// <summary>
/// 创建订单与生成微信支付 JSAPPI 签名
/// </summary>
/// <param name="create">订餐参数</param>
/// <returns></returns>
[HttpPost]
public async Task<ActionResult> Create(Create create)
{
try
{
logger.Info("orders create xml: " + create.ToXml());
if (!ModelState.IsValid)
return Json(new { IsError = true, ErrorMsg = "创建订单参数异常!!!", Data = string.Empty }, JsonRequestBehavior.AllowGet);
//取购物车缓存
var cart = CacheManger.Cache.Get<CartInfoModel>(create.OpenId);
if (cart.IsNull() || cart.ShopId.IsNullOrEmpty() || cart.OpenID.IsNullOrEmpty() || cart.OpenID != create.OpenId || cart.CartItemList.IsNull() || cart.CartItemList.Count == 0)
return Json(new { IsError = true, ErrorMsg = "创建订单参数异常!!!", Data = string.Empty }, JsonRequestBehavior.AllowGet);
//控制库存与订单事物
using (var conn = new SqlConnection(DbSetting.App))
{
await conn.OpenAsync();
var trans = conn.BeginTransaction();

//验证价格及库存[重要]

//创建订单
string subject = @"xxx支付";
string orderNo = WxPayConfig.OutTradeNo;
//!!! 1分钱测试 !!!
decimal total_fee = 0.01m;
var executeNum = await conn.ExecuteAsync(@"INSERT INTO Orders
(
Origin,
ShopId,
OpenId,
Name,
PhoneNo,
[Subject],
OrderNo,
[Status],
TotalFee,
Coupon,
Memo,
CreateTime
)
VALUES
(
@Origin,
@ShopId,
@OpenId,
@Name,
@PhoneNo,
@Subject,
@OrderNo,
@Status,
@TotalFee,
@Coupon,
@Memo,
@CreateTime
)", new
{
Origin = AbpConstants.WEIXIN_ORIGIN,
OpenId = create.OpenId,
ShopId = Guid.Parse(cart.ShopId),
Name = create.UserName,
PhoneNo = create.Phone,
Subject = subject,
OrderNo = orderNo,
Status = "R",
TotalFee = cart.TotalPrice,
Coupon = "0",
Memo = string.Empty,
CreateTime = DateTime.Now
}, trans);
if (executeNum <= 0)
{
trans.Rollback();
return Json(new { IsError = true, ErrorMsg = "创建订单异常!!!", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
foreach (var item in cart.CartItemList.Where(t => t.CartNum != 0))
{
executeNum = conn.Execute(@"INSERT INTO OrderDetail
(
OrderId,
ItemId,
ItemName,
Num,
UnitPrice,
TotalFee
)
VALUES
(
@OrderId,
@ItemId,
@ItemName,
@Num,
@UnitPrice,
@TotalFee
)", new
{
OrderId = orderNo,
ItemId = item.ItemId,
ItemName = item.ItemName,
Num = item.CartNum,
UnitPrice = item.Price,
TotalFee = item.Price * item.CartNum
}, trans);
if (executeNum <= 0)
{
trans.Rollback();
return Json(new { IsError = true, ErrorMsg = "创建订单明细异常!!!", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
}
//提交事物
trans.Commit();
var wxpay = await Order(WxPayConfig.APPID, create.OpenId, WxPayConfig.MCHID, orderNo, total_fee, WxPayConfig.NonceStr, subject, "没有优惠券", "XXX");
if (wxpay.IsError)
{
return Redirect(DbSetting.getAppText("Domain") + @"/oauth/1");
}
var jsApiDict = new SortedDictionary<string, string>();
jsApiDict.Add("appId", appId);
jsApiDict.Add("timeStamp", WxPayConfig.TimeStamp);
jsApiDict.Add("nonceStr", WxPayConfig.NonceStr);
jsApiDict.Add("package", "prepay_id=" + (wxpay.Data as SortedDictionary<string, string>)["prepay_id"]);
jsApiDict.Add("signType", "MD5");
jsApiDict.Add("paySign", WxPayConfig.GenerateSign(jsApiDict));
return Json(new { IsError = false, ErrorMsg = string.Empty, Data = jsApiDict.ConvertDictionaryToJson() }, JsonRequestBehavior.AllowGet);
}
}
catch (Exception ex)
{
logger.Info("orders create  xml: " + create.ToXml() + " exception message: " + ex.Message);
return Json(new
{
IsError = true,
ErrorMsg = "创建订单异常!!!",
Data = string.Empty
}, JsonRequestBehavior.AllowGet);
}
}
#endregion

#region 微信支付签名
/// <summary>
/// 微信支付签名
/// </summary>
/// <param name="appid">公众账号ID</param>
/// <param name="openid">微信唯一标识</param>
/// <param name="mch_id">商户号</param>
/// <param name="out_trade_no">商户订单号</param>
/// <param name="total_fee">订单总金额，单位为分</param>
/// <param name="nonce_str">随机字符串</param>
/// <param name="body"></param>
/// <param name="goods_tag"></param>
/// <param name="attach"></param>
/// <returns></returns>
private async Task<WebAPIResponse> Order(string appid, string openid, string mch_id, string out_trade_no, decimal total_fee, string nonce_str, string body, string goods_tag, string attach)
{
try
{
//网页端调起支付API
//https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_7&index=6
//统一下单
//https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1
var dict = new SortedDictionary<string, string>();
dict.Add("appid", appid);
dict.Add("openid", openid);
dict.Add("mch_id", mch_id);
dict.Add("nonce_str", nonce_str);
dict.Add("out_trade_no", out_trade_no);
//订单总金额，单位为分
dict.Add("total_fee", Convert.ToInt32(total_fee * 100).ToString());
//附加数据，在查询API和支付通知中原样返回，该字段主要用于商户携带订单的自定义数据
dict.Add("attach", attach);
dict.Add("body", body);
dict.Add("trade_type", WxPayConfig.TRADETYPE);
//终端IP
dict.Add("spbill_create_ip", AbpConstants.Ip());
dict.Add("notify_url", DbSetting.getAppText("NOTIFY_URL"));
//商品标记，代金券或立减优惠功能的参数
dict.Add("goods_tag", goods_tag);
dict.Add("time_expire", DateTime.Now.AddMinutes(30).ToString("yyyyMMddHHmmss"));
dict.Add("time_start", DateTime.Now.ToString("yyyyMMddHHmmss"));
dict.Add("sign", WxPayConfig.GenerateSign(dict));
string xml = "<xml>";
foreach (var pair in dict)
{
if (pair.Value.GetType() == typeof(int))
{
xml += "<" + pair.Key + ">" + pair.Value + "</" + pair.Key + ">";
}
else if (pair.Value.GetType() == typeof(string))
{
xml += "<" + pair.Key + ">" + "<![CDATA[" + pair.Value + "]]></" + pair.Key + ">";
}
}
xml += "</xml>";
logger.Info("OrdersController unifiedorder Req xml: " + xml);
var data = await @"https://api.mch.weixin.qq.com/pay/unifiedorder".PostStringAsync(xml).ReceiveString();
logger.Info("OrdersController unifiedorder Resp xml: " + data);
if (data.IsNotNullOrEmpty() && data.Contains("SUCCESS", StringComparison.OrdinalIgnoreCase))
{
return new WebAPIResponse { IsError = false, Msg = "签名成功", Data = data.ConvertWeixinXmlToSortedDictionary() };
}
return new WebAPIResponse { IsError = true, Msg = "微信支付签名失败" };
}
catch (Exception ex)
{
logger.Error("OrdersController unifiedorder Exception :" + ex.Message);
return new WebAPIResponse { IsError = true, Msg = "微信支付签名失败" };
}
}
#endregion

#region 微信订单查询
/// <summary>
/// 微信订单查询
/// </summary>
/// <param name="appid">公众账号ID</param>
/// <param name="mch_id">商户号</param>
/// <param name="transaction_id">微信的订单号</param>
/// <param name="out_trade_no">商户订单号</param>
/// <param name="nonce_str">随机字符串</param>
/// <param name="sign">签名</param>
/// <returns></returns>
private async Task<WebAPIResponse> Query(string appid, string mch_id, string transaction_id, string out_trade_no, string nonce_str, string sign)
{
if (appid.IsEmpty() || mch_id.IsEmpty() || transaction_id.IsEmpty())
{
return new WebAPIResponse { IsError = true, Msg = "参数有误！！！" };
}
try
{
var dict = new Dictionary<string, string>();
dict.Add("appid", appid);
dict.Add("mch_id", mch_id);
dict.Add("transaction_id", transaction_id);
dict.Add("out_trade_no", out_trade_no);
dict.Add("nonce_str", nonce_str);
dict.Add("sign", sign);
string xml = "<xml>";
foreach (var pair in dict)
{
if (pair.Value.GetType() == typeof(int))
{
xml += "<" + pair.Key + ">" + pair.Value + "</" + pair.Key + ">";
}
else if (pair.Value.GetType() == typeof(string))
{
xml += "<" + pair.Key + ">" + "<![CDATA[" + pair.Value + "]]></" + pair.Key + ">";
}
}
xml += "</xml>";
logger.Info("OrdersController WeixinNotify Req xml: " + xml);
var data = await @"https://api.mch.weixin.qq.com/pay/orderquery".PostStringAsync(xml).ReceiveString();
logger.Info("OrdersController WeixinNotify Resp xml: " + data);
if (data.IsNotNullOrEmpty() && data.Contains("SUCCESS", StringComparison.OrdinalIgnoreCase))
{
return new WebAPIResponse { IsError = false, Data = "查询订单成功！！！" };
}
return new WebAPIResponse { IsError = true, Msg = "微信订单查询失败！！！" };
}
catch (Exception ex)
{
logger.Error("OrdersController Exception :" + ex.Message);
return new WebAPIResponse { IsError = true, Msg = ex.Message };
}
}
#endregion

JS签名调起支付窗口

<script type="text/javascript">
if (typeof WeixinJSBridge == "undefined") {
if (document.addEventListener) {
document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);
} else if (document.attachEvent) {
document.attachEvent('WeixinJSBridgeReady', onBridgeReady);
document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);
}
} else {
onBridgeReady();
}
@*@Html.Raw(Model.WeixinJsAPI)*@
function onBridgeReady() {
WeixinJSBridge.invoke(
'getBrandWCPayRequest', $.parseJSON(document.getElementById("WeixinJsAPI").value),
function (data) {
if (data.err_msg == 'get_brand_wcpay_request:ok') {
window.location.href = ' @Url.Content("~/oauth/orders")';
} else {
$('.confirmbtn').removeAttr('disabled').css('background-color', '#80D200');
}
}
);
}
</script>

微信异步回调消息

/// <summary>
/// 微信支付异步通知
/// </summary>
/// <returns></returns>
public async Task<ActionResult> Notify()
{
int intLen = Convert.ToInt32(Request.InputStream.Length);
if (intLen <= 0)
{
return Json(new { IsError = true, ErrorMsg = "没有微信支付异步参数!!! ", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
try
{
var dict = new SortedDictionary<string, string>();
//dict = @"appid=wx0ae16b319cd984cf&attach=XXX&bank_type=CFT&cash_fee=1&fee_type=CNY&is_subscribe=Y&mch_id=1287151001&nonce_str=40f11a82cdde44588ec7d6b6bf9cca9d&openid=oxf8ns9AW1IwSwskzglgMH69t38o&out_trade_no=2015121621484780479309&result_code=SUCCESS&return_code=SUCCESS&sign=21C2A8727668E030BF801AB5B701BF93&time_end=20151216214906&total_fee=1&trade_type=JSAPI&transaction_id=1002230068201512162126471549".ConvertStringToSortedDictionary();
var xmlDoc = new XmlDocument();
xmlDoc.Load(Request.InputStream);
var root = xmlDoc.SelectSingleNode("xml");
XmlNodeList xnl = root.ChildNodes;
foreach (XmlNode xnf in xnl)
{
dict.Add(xnf.Name, xnf.InnerText);
}
if (dict.Count <= 0)
{
return Json(new { IsError = true, ErrorMsg = "没有异步参数!!! ", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
logger.Info("【 WeixinController Notify SDKUtil.ConvertDictionaryToString : 请求报文=[" + dict.ConvertDictionaryToString() + "]\n");
//验证签名
string signK = WxPayConfig.GenerateSign(dict);
if (signK != dict["sign"])
{
logger.Info("WeixinController Notify Verify WxSign Error : 请求报文=[signK " + signK + " : dict['sign'] " + dict["sign"] + "]\n");
return Json(new { IsError = true, ErrorMsg = "验证签名失败 !!! ", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
//验证通信标识
string return_code = dict["return_code"];
if (!return_code.Equals("SUCCESS", StringComparison.OrdinalIgnoreCase))
{
string return_msg = dict["return_msg"];
logger.Info("WeixinController Notify return_code Error : 请求报文=[" + return_code + " : " + return_msg + "]\n");
return Json(new { IsError = true, ErrorMsg = "验证通信标识失败 !!! ", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
//验证交易标识[重要！！！]
string result_code = dict["result_code"];
if (!result_code.Equals("SUCCESS", StringComparison.OrdinalIgnoreCase))
{
string err_code = dict["err_code"];
string err_code_des = dict["err_code_des"];
logger.Info("WeixinController Notify return_code Error : 请求报文=[" + err_code + " : " + err_code_des + "]\n");
return Json(new { IsError = true, ErrorMsg = "验证交易标识失败 !!! ", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
//公众账号ID
string appid = dict["appid"];
//商户号
string mch_id = dict["mch_id"];
//随机字符串
string nonce_str = dict["nonce_str"];
//签名
string sign = dict["sign"];
//用户在商户appid 下的唯一标识
string openid = dict["openid"];
//用户是否关注公众账
string is_subscribe = dict["is_subscribe"];
//交易类型
string trade_type = dict["trade_type"];
//付款银行
string bank_type = dict["bank_type"];
//订单总金额[金额分转元]
string total_fee = (float.Parse(dict["total_fee"]) / 100).ToString();
//商户订单号
string out_trade_no = dict["out_trade_no"];
//微信支付订单号
string transaction_id = dict["transaction_id"];
//商家数据包
string attach = dict["attach"];
//支付完成时间
string time_end = dict["time_end"];

#region 微信订单查询【使用签名验证废弃】
//var wxorder = await _weixinService.Query(WxPayConfig.KEY, WxPayConfig.APPID, WxPayConfig.MCHID, transaction_id, out_trade_no);
#endregion

//验证查询订单状态[R 预定状态  C 取消状态 P 支付完成  I 取单完成  D 送货状态]
var order = await new SqlConnection(DbSetting.App).QueryAsync<Orders>(@"SELECT *FROM Orders WHERE OrderNo=@OrderNo", new { OrderNo = out_trade_no }).ContinueWith(t => t.Result.SingleOrDefault());
if (order.IsNull() || order.Status.Trim() != "R" || order.TradeNO.IsNotNullOrEmpty() || order.PayFee.IsNotNullOrEmpty())
{
logger.Error("WeixinController Notify order Error xml : " + order.ToXml() + string.Format("  订单: {0} 信息不正确，如有疑问请联系客服！", out_trade_no));
return Json(new { IsError = true, ErrorMsg = "验证查询订单状态失败 !!! ", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
using (var conn = new SqlConnection(DbSetting.App))
{
await conn.OpenAsync();
var trans = conn.BeginTransaction();
//记录微信异步信息
var executeNum = await conn.ExecuteAsync(@"INSERT INTO PayNotify
(
openid,
is_subscribe,
trade_type,
bank_type,
transaction_id,
out_trade_no,
total_fee,
coupon_fee,
attach,
memo,
time_end,
createtime
)
VALUES
(
@openid,
@is_subscribe,
@trade_type,
@bank_type,
@transaction_id,
@out_trade_no,
@total_fee,
@coupon_fee,
@attach,
@memo,
@time_end,
@createtime
)", new
{
openid = openid,
is_subscribe = is_subscribe,
trade_type = trade_type,
bank_type = bank_type,
transaction_id = transaction_id,
out_trade_no = out_trade_no,
total_fee = total_fee,
coupon_fee = 0.0m,
attach = attach,
memo = dict.ConvertDictionaryToJson(),
time_end = time_end,
createtime = DateTime.Now
}, trans);
if (executeNum <= 0)
{
trans.Rollback();
return Json(new { IsError = true, ErrorMsg = "记录微信异步信息异常!!!", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
//更新订单支付信息
executeNum = await conn.ExecuteAsync(@"UPDATE Orders SET Status = 'P', TradeNO = @TradeNO, PayFee = @PayFee, PayTime = GETDATE()", new
{
TradeNO = transaction_id,
PayFee = total_fee,
}, trans);
if (executeNum <= 0)
{
trans.Rollback();
return Json(new { IsError = true, ErrorMsg = "更新订单支付信息异常!!!", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
//!!! 扣菜品库存

trans.Commit();
}
//构造成功XML
var wxdict = new SortedDictionary<string, string>();
wxdict.Add("return_code", "SUCCESS");
wxdict.Add("return_msg", "PAY_SUCCESS");
string wxRXml = wxdict.ConvertWxDictToString();
logger.Info("WeixinController Notify Success wxRXml : " + wxRXml + " 】");
return Content(wxRXml,@"text/xml",System.Text.Encoding.UTF8);
}
catch (Exception ex)
{
logger.Fatal("WeixinController Notify Exception : " + ex.Message + " 】");
return Json(new { IsError = true, ErrorMsg = "微信支付异常失败 !!! ", Data = string.Empty }, JsonRequestBehavior.AllowGet);
}
}