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公众号微信支付

时间:2016-10-13 23:31:33      阅读:522      评论:0      收藏:0      [点我收藏+]

1、概要

     公众号是以微信用户的一个联系人形式存在的,支付是微信服务号的核心一环。

     本篇主要介绍微信支付这一功能,避免大家再跳微信支付的坑。

1.1 关于Magicodes.WeChat.SDK

      MAGICODES.WECHAT.SDK为心莱团队封装的轻量级微信SDK,现已全部开源,开源库地址为:https://github.com/xin-lai/Magicodes.WeChat.SDK

      更多介绍,请关注后续博客。

2、微信公众号支付

     用户已有商城网址,用户通过微信消息、微信扫描二维码、微信自定义菜单等操作在微信内打开网页时,可以调用微信支付完成下单购买流程。

2.1    支付流程

  2.1.1    微信网页支付流程

      技术分享

 

备注:实际流程其实非常简单

  ① 用户支付之前,程序生成订单并调用统一下单API()

  ② 微信系统返回预付单信息

  ③ 根据信息生成JSAPI页面调用的支付参数并签名,jssdk调用

  ④ 用户支付,jsapi向微信系统发送请求

  ⑤ 微信系统返回支付结果给用户,同时异步发送结果给程序后台(程序没有收到通知,可以调用查询接口)

  ⑥ 支付完成,用户界面根据结果做相关页面跳转或提示处理,程序后台根据通知做订单状态变更等逻辑处理。

2.1.2    刷卡支付

    后续更新

2.1.3    扫码支付

     后续更新

2.1.4    app支付

     后续更新 

2.2    注意事项

2.3    开发实践 

   2.3.1    开发配置

   1、设置测试目录

在微信公众平台设置。支付测试状态下,设置测试目录,测试人的微信号添加到白名单,发起支付的页面目录必须与设置的精确匹配。并将支付链接发到对应的公众号会话窗口中才能正常发起支付测试。注意正式目录一定不能与测试目录设置成一样,否则支付会出错。

       技术分享

 

友情提示:如果是使用测试目录的地址,一定要记得把个人测试微信号添加到白名单。

   2、设置正式支付目录

根据图中栏目顺序进入修改栏目,勾选JSAPI网页支付开通该权限,并配置好支付授权目录,该目录必须是发起支付的页面的精确目录,子目录下无法正常调用支付。具体界面如图:

      技术分享

 

友情提示:注意红色框框里面的说明,一不小心会很容易进坑的。

   2.3.2    开发程序

            直接看代码吧

微信支付业务类

技术分享
  1 /// <summary>
  2 /// 微信支付接口,官方API:https://mp.weixin.qq.com/paymch/readtemplate?t=mp/business/course2_tmpl&lang=zh_CN&token=25857919#4
  3 
  4     /// </summary>
  5     public class TenPayV3 : PayBase
  6 
  7     {
  8         public UnifiedorderResult Unifiedorder(UnifiedorderRequest model)
  9 
 10         {
 11 
 12             var url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
 13 
 14  
 15 
 16  
 17 
 18             UnifiedorderResult result = null;
 19 
 20  
 21 
 22             model.AppId = WeiChatConfig.AppId;
 23 
 24             model.MchId = PayConfig.MchId;
 25 
 26             if (model.NotifyUrl == null)
 27 
 28                 model.NotifyUrl = PayConfig.Notify;
 29 
 30             Dictionary<string, string> dictionary = PayUtil.GetAuthors<UnifiedorderRequest>(model);
 31 
 32             model.Sign = PayUtil.CreateMd5Sign(dictionary, PayConfig.TenPayKey);//生成Sign
 33 
 34             Dictionary<string, string> dict = PayUtil.GetAuthors<UnifiedorderRequest>(model);
 35 
 36             result = PostXML<UnifiedorderResult>(url, model);
 37 
 38             return result;
 39 
 40         }      
 41 
 42  
 43 
 44         /// <summary>
 45 
 46         /// 订单查询接口
 47 
 48         /// </summary>
 49 
 50         /// <param name="data"></param>
 51 
 52         /// <returns></returns>
 53 
 54         public static string OrderQuery(string data)
 55 
 56         {
 57 
 58             var urlFormat = "https://api.mch.weixin.qq.com/pay/orderquery";
 59 
 60  
 61 
 62             var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
 63 
 64             using (MemoryStream ms = new MemoryStream())
 65 
 66             {
 67 
 68                 ms.Write(formDataBytes, 0, formDataBytes.Length);
 69 
 70                 ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
 71 
 72                 return RequestUtility.HttpPost(urlFormat, null, ms);
 73 
 74             }
 75 
 76         }
 77 
 78  
 79 
 80         /// <summary>
 81 
 82         /// 关闭订单接口
 83 
 84         /// </summary>
 85 
 86         /// <param name="data">关闭订单需要post的xml数据</param>
 87 
 88         /// <returns></returns>
 89 
 90         public static string CloseOrder(string data)
 91 
 92         {
 93 
 94             var urlFormat = "https://api.mch.weixin.qq.com/pay/closeorder";
 95 
 96  
 97 
 98             var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
 99 
100             using (MemoryStream ms = new MemoryStream())
101 
102             {
103 
104                 ms.Write(formDataBytes, 0, formDataBytes.Length);
105 
106                 ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
107 
108                 return RequestUtility.HttpPost(urlFormat, null, ms);
109 
110             }
111 
112         }
113 
114  
115 
116       
117 
118  
119 
120         /// <summary>
121 
122         /// 退款查询接口
123 
124         /// </summary>
125 
126         /// <param name="data"></param>
127 
128         /// <returns></returns>
129 
130         public static string RefundQuery(string data)
131 
132         {
133 
134             var urlFormat = "https://api.mch.weixin.qq.com/pay/refundquery";
135 
136  
137 
138             var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
139 
140             using (MemoryStream ms = new MemoryStream())
141 
142             {
143 
144                 ms.Write(formDataBytes, 0, formDataBytes.Length);
145 
146                 ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
147 
148                 return RequestUtility.HttpPost(urlFormat, null, ms);
149 
150             }
151 
152         }
153 
154  
155 
156         /// <summary>
157 
158         /// 对账单接口
159 
160         /// </summary>
161 
162         /// <param name="data"></param>
163 
164         /// <returns></returns>
165 
166         public static string DownloadBill(string data)
167 
168         {
169 
170             var urlFormat = "https://api.mch.weixin.qq.com/pay/downloadbill";
171 
172  
173 
174             var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
175 
176             using (MemoryStream ms = new MemoryStream())
177 
178             {
179 
180                 ms.Write(formDataBytes, 0, formDataBytes.Length);
181 
182                 ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
183 
184                 return RequestUtility.HttpPost(urlFormat, null, ms);
185 
186             }
187 
188         }
189 
190  
191 
192         /// <summary>
193 
194         /// 短链接转换接口
195 
196         /// </summary>
197 
198         /// <param name="data"></param>
199 
200         /// <returns></returns>
201 
202         public static string ShortUrl(string data)
203 
204         {
205 
206             var urlFormat = "https://api.mch.weixin.qq.com/tools/shorturl";
207 
208  
209 
210             var formDataBytes = data == null ? new byte[0] : Encoding.UTF8.GetBytes(data);
211 
212             using (MemoryStream ms = new MemoryStream())
213 
214             {
215 
216                 ms.Write(formDataBytes, 0, formDataBytes.Length);
217 
218                 ms.Seek(0, SeekOrigin.Begin);//设置指针读取位置
219 
220                 return RequestUtility.HttpPost(urlFormat, null, ms);
221 
222             }
223 
224         }
225 
226         /// <summary>
227 
228         ///
229 
230         /// </summary>
231 
232         /// <param name="page"></param>
233 
234         /// <returns></returns>
235 
236         public NotifyResult Notify(Stream inputStream)
237 
238         {
239 
240             NotifyResult result = null;
241 
242             string data = PayUtil.PostInput(inputStream);
243 
244             result = XmlHelper.DeserializeObject<NotifyResult>(data);
245 
246             return result;
247 
248         }
249 
250         /// <summary>
251 
252         /// 通知并返回处理XML
253 
254         /// </summary>
255 
256         /// <param name="inputStream">输入流</param>
257 
258         /// <param name="successAction">成功处理逻辑回调函数</param>
259 
260         /// <param name="failAction">失败处理逻辑回调函数</param>
261 
262         /// <param name="successMsg">成功返回消息</param>
263 
264         /// <param name="errorMsg">失败返回消息</param>
265 
266         /// <param name="isSync">是否异步执行相关处理逻辑</param>
267 
268         /// <returns></returns>
269 
270         public string NotifyAndReurnResult(Stream inputStream, Action<NotifyResult> successAction, Action<NotifyResult> failAction, string successMsg = "OK", string errorMsg = "FAIL", bool isSync = true)
271 
272         {
273 
274             var result = Notify(inputStream);
275 
276             var request = new NotifyRequest();
277 
278             request.ReturnCode = "FAIL";
279 
280             if (result.IsSuccess())
281 
282             {
283 
284                 if (isSync)
285 
286                     Task.Run(() => successAction(result));
287 
288                 else
289 
290                     successAction.Invoke(result);
291 
292                 //交易成功
293 
294                 request.ReturnCode = "SUCCESS";
295 
296                 request.ReturnMsg = successMsg;
297 
298                 return XmlHelper.SerializeObject(request);
299 
300             }
301 
302             else
303 
304             {
305 
306                 if (isSync)
307 
308                     Task.Run(() => failAction(result));
309 
310                 else
311 
312                     failAction.Invoke(result);
313 
314                 request.ReturnMsg = errorMsg;
315 
316                 return XmlHelper.SerializeObject(request);
317 
318             }
319 
320         }
321 
322 }
323 
324 }
View Code

把返回参数和请求参数,序列化成对象,方便我们在编写我们本身逻辑的时候调用

技术分享
  1  [XmlRoot("xml")]
  2     [Serializable()]
  3     public class Result : PayResult
  4     {
  5         /// <summary>
  6         /// 微信分配的公众账号ID
  7         /// </summary>
  8         [XmlElement("appid")]
  9         public string AppId { get; set; }
 10         /// <summary>
 11         /// 微信支付分配的商户号
 12         /// </summary>
 13         [XmlElement("mch_id")]
 14         public string Mch_Id { get; set; }
 15         /// <summary>
 16         /// 微信支付分配的终端设备号
 17         /// </summary>
 18         [XmlElement("device_info")]
 19         public string Device_Info { get; set; }
 20         /// <summary>
 21         /// 随机字符串,不长于32 位
 22         /// </summary>
 23         [XmlElement("nonce_str")]
 24         public string NonceStr { get; set; }
 25         /// <summary>
 26         /// 签名
 27         /// </summary>
 28         [XmlElement("sign")]
 29         public string Sign { get; set; }
 30         /// <summary>
 31         /// SUCCESS/FAIL
 32         /// </summary>
 33         [XmlElement("result_code")]
 34         public string ResultCode { get; set; }
 35         [XmlElement("err_code")]
 36         public string ErrCode { get; set; }
 37         [XmlElement("err_code_des")]
 38         public string ErrCodeDes { get; set; }
 39     }
 40 
 41     [XmlRoot("xml")]
 42     [Serializable()]
 43     public class UnifiedorderResult : Result
 44     {
 45         /// <summary>
 46         /// 交易类型:JSAPI、NATIVE、APP
 47         /// </summary>
 48         [XmlElement("trade_type")]
 49         public string TradeType { get; set; }
 50         /// <summary>
 51         /// 微信生成的预支付ID,用于后续接口调用中使用
 52         /// </summary>
 53         [XmlElement("prepay_id")]
 54         public string PrepayId { get; set; }
 55         /// <summary>
 56         /// trade_type为NATIVE时有返回,此参数可直接生成二维码展示出来进行扫码支付
 57         /// </summary>
 58         [XmlElement("code_url")]
 59         public string CodeUrl { get; set; }
 60     }
 61 
 62 
 63     [XmlRoot("xml")]
 64     [Serializable()]
 65     public class UnifiedorderRequest
 66     {
 67         /// <summary>
 68         /// OpenId
 69         /// </summary>
 70         [XmlElement("openid")]
 71         public string OpenId { get; set; }
 72         /// <summary>
 73         /// 【不用填写】微信开放平台审核通过的应用APPID
 74         /// </summary>
 75         [XmlElement("appid")]
 76         public string AppId { get; set; }
 77         /// <summary>
 78         /// 【不用填写】微信支付分配的商户号
 79         /// </summary>
 80         [XmlElement("mch_id")]
 81         public string MchId { get; set; }
 82 
 83         /// <summary>
 84         /// 终端设备号(门店号或收银设备ID),默认请传"WEB"
 85         /// </summary>
 86         [XmlElement("device_info")]
 87         public string DeviceInfo { get; set; }
 88         /// <summary>
 89         /// 随机字符串,不长于32位
 90         /// </summary>
 91         [XmlElement("nonce_str")]
 92         public string NonceStr { get; set; }
 93         /// <summary>
 94         /// 【不用填写】签名
 95         /// </summary>
 96         [XmlElement("sign")]
 97         public string Sign { get; set; }
 98         /// <summary>
 99         /// 商品描述交易字段格式根据不同的应用场景按照以下格式: APP——需传入应用市场上的APP名字-实际商品名称,天天爱消除-游戏充值。
100         /// </summary>
101         [XmlElement("body")]
102         public string Body { get; set; }
103         /// <summary>
104         /// 商品名称明细列表
105         /// </summary>
106         [XmlElement("detail")]
107         public string Detail { get; set; }
108         /// <summary>
109         /// 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
110         /// </summary>
111         [XmlElement("attach")]
112         public string Attach { get; set; }
113         /// <summary>
114         /// 商户系统内部的订单号,32个字符内、可包含字母, 其他说明见商户订单号
115         /// </summary>
116         [XmlElement("out_trade_no")]
117         public string OutTradeNo { get; set; }
118         /// <summary>
119         /// 符合ISO 4217标准的三位字母代码,默认人民币:CNY
120         /// </summary>
121         [XmlElement("fee_type")]
122         public string FeeType { get; set; }
123         /// <summary>
124         /// 订单总金额,单位为分
125         /// </summary>
126         [XmlElement("total_fee")]
127         public string TotalFee { get; set; }
128         /// <summary>
129         /// 用户端实际ip
130         /// </summary>
131         [XmlElement("spbill_create_ip")]
132         public string SpbillCreateIp { get; set; }
133         /// <summary>
134         /// 订单生成时间,格式为yyyyMMddHHmmss,如2009年12月25日9点10分10秒表示为20091225091010。
135         /// </summary>
136         [XmlElement("time_start")]
137         public string TimeStart { get; set; }
138         /// <summary>
139         /// 订单失效时间,格式为yyyyMMddHHmmss,如2009年12月27日9点10分10秒表示为20091227091010
140         /// </summary>
141         [XmlElement("time_expire")]
142         public string TimeExpire { get; set; }
143         /// <summary>
144         /// 商品标记,代金券或立减优惠功能的参数,说明详见代金券或立减优惠
145         /// </summary>
146         [XmlElement("goods_tag")]
147         public string GoodsTag { get; set; }
148         /// <summary>
149         /// 【不用填写】接收微信支付异步通知回调地址,通知url必须为直接可访问的url,不能携带参数
150         /// </summary>
151         [XmlElement("notify_url")]
152         public string NotifyUrl { get; set; }
153         /// <summary>
154         /// 支付类型(JSAPI,NATIVE,APP)公众号内支付填JSAPI
155         /// </summary>
156         [XmlElement("trade_type")]
157         public string TradeType { get; set; }
158         /// <summary>
159         /// no_credit--指定不能使用信用卡支付
160         /// </summary>
161         [XmlElement("limit_pay")]
162         public string LimitPay { get; set; }
163     }
164     [XmlRoot("xml")]
165     [Serializable()]
166     public class NotifyResult : PayResult
167     {
168         /// <summary>
169         /// 微信分配的公众账号ID(企业号corpid即为此appId)
170         /// </summary>
171         [XmlElement("appid")]
172         public string AppId { get; set; }
173         /// <summary>
174         /// 微信支付分配的商户号
175         /// </summary>
176         [XmlElement("mch_id")]
177         public string MchId { get; set; }
178         /// <summary>
179         /// 微信支付分配的终端设备号
180         /// </summary>
181         [XmlElement("device_info")]
182         public string DeviceInfo { get; set; }
183         /// <summary>
184         /// 随机字符串,不长于32位
185         /// </summary>
186         [XmlElement("nonce_str")]
187         public string NonceStr { get; set; }
188         /// <summary>
189         /// 签名
190         /// </summary>
191         [XmlElement("sign")]
192         public string Sign { get; set; }
193         /// <summary>
194         /// 业务结果,SUCCESS/FAIL
195         /// </summary>
196         [XmlElement("result_code")]
197         public string ResultCode { get; set; }
198         /// <summary>
199         /// 错误返回的信息描述
200         /// </summary>
201         [XmlElement("err_code")]
202         public string ErrCode { get; set; }
203         /// <summary>
204         /// 错误返回的信息描述
205         /// </summary>
206         [XmlElement("err_code_des")]
207         public string ErrCodeDes { get; set; }
208         /// <summary>
209         /// 用户在商户appid下的唯一标识
210         /// </summary>
211         [XmlElement("openid")]
212         public string OpenId { get; set; }
213         /// <summary>
214         /// 用户是否关注公众账号,Y-关注,N-未关注,仅在公众账号类型支付有效
215         /// </summary>
216         [XmlElement("is_subscribe")]
217         public string IsSubscribe { get; set; }
218         /// <summary>
219         /// 交易类型,JSAPI、NATIVE、APP
220         /// </summary>
221         [XmlElement("trade_type")]
222         public string TradeType { get; set; }
223         /// <summary>
224         /// 银行类型,采用字符串类型的银行标识,银行类型见银行列表
225         /// </summary>
226         [XmlElement("bank_type")]
227         public string BankType { get; set; }
228         /// <summary>
229         /// 订单总金额,单位为分
230         /// </summary>
231         [XmlElement("total_fee")]
232         public string TotalFee { get; set; }
233         /// <summary>
234         /// 应结订单金额=订单金额-非充值代金券金额,应结订单金额<=订单金额
235         /// </summary>
236         [XmlElement("settlement_total_fee")]
237         public string SettlementTotalFee { get; set; }
238         /// <summary>
239         /// 货币类型,符合ISO4217标准的三位字母代码,默认人民币:CNY,其他值列表详见货币类型
240         /// </summary>
241         [XmlElement("fee_type")]
242         public string FeeType { get; set; }
243         /// <summary>
244         /// 货币类型现金支付金额订单现金支付金额,详见支付金额
245         /// </summary>
246         [XmlElement("cash_fee")]
247         public string CashFee { get; set; }
248         /// <summary>
249         /// 货币类型,符合ISO4217标准的三位字母代码,默认人民币:CNY,其他值列表详见货币类型
250         /// </summary>
251         [XmlElement("cash_fee_type")]
252         public string CashFeeType { get; set; }
253         /// <summary>
254         /// 代金券金额<=订单金额,订单金额-代金券金额=现金支付金额,详见支付金额]
255         /// </summary>
256         [XmlElement("coupon_fee")]
257         public string CouponFee { get; set; }
258         /// <summary>
259         /// 代金券使用数量
260         /// </summary>
261         [XmlElement("coupon_count")]
262         public string CouponCount { get; set; }
263         /// <summary>
264         /// CASH--充值代金券         NO_CASH---非充值代金券        订单使用代金券时有返回(取值:CASH、NO_CASH)。$n为下标,从0开始编号,举例:coupon_type_$0
265         /// </summary>
266         [XmlElement("coupon_type_$n")]
267         public string CouponTypeN { get; set; }
268         /// <summary>
269         /// 代金券ID,$n为下标,从0开始编号
270         /// </summary>
271         [XmlElement("coupon_id_$n")]
272         public string CouponIdN { get; set; }
273         /// <summary>
274         /// 单个代金券支付金额,$n为下标,从0开始编号
275         /// </summary>
276         [XmlElement("coupon_fee_$n")]
277         public string CouponFeeN { get; set; }
278         /// <summary>
279         /// 微信支付订单号
280         /// </summary>
281         [XmlElement("transaction_id")]
282         public string TransactionId { get; set; }
283         /// <summary>
284         /// 商户系统的订单号,与请求一致
285         /// </summary>
286         [XmlElement("out_trade_no")]
287         public string OutTradeNo { get; set; }
288         /// <summary>
289         /// 商家数据包,原样返回
290         /// </summary>
291         [XmlElement("attach")]
292         public string Attach { get; set; }
293         /// <summary>
294         /// 支付完成时间,格式为yyyyMMddHHmmss,如2009年12月25日9点10分10秒表示为20091225091010。其他详见时间规则
295         /// </summary>
296         [XmlElement("time_end")]
297         public string TimeEnd { get; set; }
298     }
299     [XmlRoot("xml")]
300     [Serializable()]
301     public class NotifyRequest
302     {
303         /// <summary>
304         /// SUCCESS/FAIL SUCCESS表示商户接收通知成功并校验成功
305         /// </summary>
306         [XmlElement("return_code")]
307         public string ReturnCode { get; set; }
308         /// <summary>
309         /// 返回信息,如非空,为错误原因:签名失败 参数格式校验错误
310         /// </summary>
311         [XmlElement("return_msg")]
312         public string ReturnMsg { get; set; }
313     }
View Code 

这些地方是获取微信支付的配置信息,appid,machid,密钥等信息。由于我们项目本身涉及到了多租户功能,所以Key是租户Id,这里通过Key获取不能租户的配置信息,如果不要实现多租户,默认不填写就OK,然后我们也可以通过把配置信息封装成一个对象写死在这里。具体源码可以去http:githup.com/xin-lai下载。全部功能已开源。

技术分享
 1 /// <summary>
 2 
 3         /// POST提交请求,返回ApiResult对象
 4 
 5         /// </summary>
 6 
 7         /// <typeparam name="T">ApiResult对象</typeparam>
 8 
 9         /// <param name="url">请求地址</param>
10 
11         /// <param name="obj">提交的数据对象</param>
12 
13         /// <returns>ApiResult对象</returns>
14 
15         protected T PostXML<T>(string url, object obj, Func<string, string> serializeStrFunc = null) where T : PayResult
16 
17         {
18 
19             var wr = new WeChatApiWebRequestHelper();
20 
21             string resultStr = null;
22 
23             var result = wr.HttpPost<T>(url, obj, out resultStr, serializeStrFunc, inputDataType: WebRequestDataTypes.XML, outDataType: WebRequestDataTypes.XML);
24 
25             if (result != null)
26 
27             {
28 
29                 result.DetailResult = resultStr;
30 
31             }
32 
33             return result;
34 
35         }
36 
37         /// <summary>
38 
39         /// POST提交请求,带证书,返回ApiResult对象
40 
41         /// </summary>
42 
43         /// <typeparam name="T">ApiResult对象</typeparam>
44 
45         /// <param name="url">请求地址</param>
46 
47         /// <param name="obj">提交的数据对象</param>
48 
49         /// <returns>ApiResult对象</returns>
50 
51         protected T PostXML<T>(string url, object obj, X509Certificate2 cer, Func<string, string> serializeStrFunc = null) where T : PayResult
52 
53         {
54 
55             var wr = new WeChatApiWebRequestHelper();
56 
57             string resultStr = null;
58 
59             var result = wr.HttpPost<T>(url, obj,cer, out resultStr, serializeStrFunc, inputDataType: WebRequestDataTypes.XML, outDataType: WebRequestDataTypes.XML);
60 
61             if (result != null)
62 
63             {
64 
65                 result.DetailResult = resultStr;
66 
67             }
68 
69             return result;
70 
71         }
72 
73     }
View Code

PayUtiy类,封装了一些公共方法

技术分享
  1 public static class PayUtil
  2 
  3     {
  4 
  5         /// <summary>
  6 
  7         /// 随机生成Noncestr
  8 
  9         /// </summary>
 10 
 11         /// <returns></returns>
 12 
 13         public static string GetNoncestr()
 14 
 15         {
 16 
 17             Random random = new Random();
 18 
 19             return MD5UtilHelper.GetMD5(random.Next(1000).ToString(), "GBK");
 20 
 21         }
 22 
 23         /// <summary>
 24 
 25         /// 根据当前系统时间加随机序列来生成订单号
 26 
 27         /// </summary>
 28 
 29         /// <returns>订单号</returns>
 30 
 31         public static string GenerateOutTradeNo()
 32 
 33         {
 34 
 35             var ran = new Random();
 36 
 37             return string.Format("{0}{1}", UnixStamp(), ran.Next(999));
 38 
 39         }
 40 
 41         /// <summary>
 42 
 43         /// 获取时间戳
 44 
 45         /// </summary>
 46 
 47         /// <returns></returns>
 48 
 49         public static string GetTimestamp()
 50 
 51         {
 52 
 53             TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);
 54 
 55             return Convert.ToInt64(ts.TotalSeconds).ToString();
 56 
 57         }
 58 
 59  
 60 
 61         /// <summary>
 62 
 63         /// 对字符串进行URL编码
 64 
 65         /// </summary>
 66 
 67         /// <param name="instr"></param>
 68 
 69         /// <param name="charset"></param>
 70 
 71         /// <returns></returns>
 72 
 73         public static string UrlEncode(string instr, string charset)
 74 
 75         {
 76 
 77             //return instr;
 78 
 79             if (instr == null || instr.Trim() == "")
 80 
 81                 return "";
 82 
 83             else
 84 
 85             {
 86 
 87                 string res;
 88 
 89  
 90 
 91                 try
 92 
 93                 {
 94 
 95                     res = System.Web.HttpUtility.UrlEncode(instr, Encoding.GetEncoding(charset));
 96 
 97  
 98 
 99                 }
100 
101                 catch (Exception ex)
102 
103                 {
104 
105                     res = System.Web.HttpUtility.UrlEncode(instr, Encoding.GetEncoding("GB2312"));
106 
107                 }
108 
109  
110 
111  
112 
113                 return res;
114 
115             }
116 
117         }
118 
119  
120 
121         /// <summary>
122 
123         /// 对字符串进行URL解码
124 
125         /// </summary>
126 
127         /// <param name="instr"></param>
128 
129         /// <param name="charset"></param>
130 
131         /// <returns></returns>
132 
133         public static string UrlDecode(string instr, string charset)
134 
135         {
136 
137             if (instr == null || instr.Trim() == "")
138 
139                 return "";
140 
141             else
142 
143             {
144 
145                 string res;
146 
147  
148 
149                 try
150 
151                 {
152 
153                     res = System.Web.HttpUtility.UrlDecode(instr, Encoding.GetEncoding(charset));
154 
155  
156 
157                 }
158 
159                 catch (Exception ex)
160 
161                 {
162 
163                     res = System.Web.HttpUtility.UrlDecode(instr, Encoding.GetEncoding("GB2312"));
164 
165                 }
166 
167  
168 
169  
170 
171                 return res;
172 
173  
174 
175             }
176 
177         }
178 
179  
180 
181  
182 
183         /// <summary>
184 
185         /// 取时间戳生成随即数,替换交易单号中的后10位流水号
186 
187         /// </summary>
188 
189         /// <returns></returns>
190 
191         public static UInt32 UnixStamp()
192 
193         {
194 
195             TimeSpan ts = DateTime.Now - TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
196 
197             return Convert.ToUInt32(ts.TotalSeconds);
198 
199         }
200 
201         /// <summary>
202 
203         /// 取随机数
204 
205         /// </summary>
206 
207         /// <param name="length"></param>
208 
209         /// <returns></returns>
210 
211         public static string BuildRandomStr(int length)
212 
213         {
214 
215             Random rand = new Random();
216 
217  
218 
219             int num = rand.Next();
220 
221  
222 
223             string str = num.ToString();
224 
225  
226 
227             if (str.Length > length)
228 
229             {
230 
231                 str = str.Substring(0, length);
232 
233             }
234 
235             else if (str.Length < length)
236 
237             {
238 
239                 int n = length - str.Length;
240 
241                 while (n > 0)
242 
243                 {
244 
245                     str.Insert(0, "0");
246 
247                     n--;
248 
249                 }
250 
251             }
252 
253  
254 
255             return str;
256 
257         }
258 
259         /// <summary>
260 
261         /// 循环获取一个实体类每个字段的XmlAttribute属性的值
262 
263         /// </summary>
264 
265         /// <typeparam name="T"></typeparam>
266 
267         /// <returns></returns>
268 
269         public static Dictionary<string, string> GetAuthors<T>(T model)
270 
271         {
272 
273             Dictionary<string, string> _dict = new Dictionary<string, string>();
274 
275  
276 
277             Type type = model.GetType(); //获取类型
278 
279  
280 
281             PropertyInfo[] props = typeof(T).GetProperties();
282 
283             foreach (PropertyInfo prop in props)
284 
285             {
286 
287                 object[] attrs = prop.GetCustomAttributes(true);
288 
289                 foreach (object attr in attrs)
290 
291                 {
292 
293                     XmlElementAttribute authAttr = attr as XmlElementAttribute;
294 
295                     if (authAttr != null)
296 
297                     {
298 
299                         string auth = authAttr.ElementName;
300 
301  
302 
303                         PropertyInfo property = type.GetProperty(prop.Name);
304 
305                         string value = (string)property.GetValue(model, null); //获取属性值
306 
307  
308 
309                         _dict.Add(auth, value);
310 
311                     }
312 
313                 }
314 
315             }
316 
317             return _dict;
318 
319         }
320 
321  
322 
323         /// <summary>
324 
325         /// 创建md5摘要,规则是:按参数名称a-z排序,遇到空值的参数不参加签名
326 
327         /// </summary>
328 
329         /// <param name="key">参数名</param>
330 
331         /// <param name="value">参数值</param>
332 
333         /// key和value通常用于填充最后一组参数
334 
335         /// <returns></returns>
336 
337         public static string CreateMd5Sign(Dictionary<string, string> dict, string value)
338 
339         {
340 
341             ArrayList akeys = new ArrayList();
342 
343             foreach (var x in dict)
344 
345             {
346 
347                 if ("sign".CompareTo(x.Key) == 0)
348 
349                     continue;
350 
351                 akeys.Add(x.Key);
352 
353             }
354 
355             StringBuilder sb = new StringBuilder();
356 
357             akeys.Sort();
358 
359  
360 
361             foreach (string k in akeys)
362 
363             {
364 
365                 string v = (string)dict[k];
366 
367                 if (null != v && "".CompareTo(v) != 0
368 
369                     && "sign".CompareTo(k) != 0 && "key".CompareTo(k) != 0)
370 
371                 {
372 
373                     sb.Append(k + "=" + v + "&");
374 
375                 }
376 
377             }
378 
379             sb.Append("key=" + value);
380 
381             var md5 = MD5.Create();
382 
383             var bs = md5.ComputeHash(Encoding.UTF8.GetBytes(sb.ToString()));
384 
385             var sbuilder = new StringBuilder();
386 
387             foreach (byte b in bs)
388 
389             {
390 
391                 sbuilder.Append(b.ToString("x2"));
392 
393             }
394 
395             //所有字符转为大写
396 
397             return sbuilder.ToString().ToUpper();
398 
399         }
400 
401         /// <summary>
402 
403         /// 接收post数据
404 
405         /// </summary>
406 
407         /// <param name="context"></param>
408 
409         /// <returns></returns>
410 
411         public static string PostInput(Stream stream)
412 
413         {
414 
415             int count = 0;
416 
417             byte[] buffer = new byte[1024];
418 
419             StringBuilder builder = new StringBuilder();
420 
421             while ((count = stream.Read(buffer, 0, 1024)) > 0)
422 
423             {
424 
425                 builder.Append(Encoding.UTF8.GetString(buffer, 0, count));
426 
427             }
428 
429             return builder.ToString();
430 
431         }
432 
433     }
434 
435 PayResult类,请求参数基类
436 
437 [XmlRoot("xml")]
438 
439     [Serializable()]
440 
441     public class PayResult
442 
443     {
444 
445         public virtual bool IsSuccess()
446 
447         {
448 
449             return this.ReturnCode == "SUCCESS";
450 
451         }
452 
453         /// <summary>
454 
455         /// 返回状态码
456 
457         /// SUCCESS/FAIL,此字段是通信标识,非交易标识,交易是否成功需要查看result_code来判断
458 
459         /// </summary>
460 
461         [XmlElement("return_code")]
462 
463         public string ReturnCode { get; set; }
464 
465  
466 
467         /// <summary>
468 
469         /// 返回信息,返回信息,如非空,为错误原因,签名失败,参数格式校验错误
470 
471         /// </summary>
472 
473         [XmlElement("return_msg")]
474 
475         public string Message { get; set; }
476 
477  
478 
479         /// <summary>
480 
481         /// 详细内容
482 
483         /// </summary>
484 
485         [XmlIgnore]
486 
487         public string DetailResult { get; set; }
488 
489     }
View Code

支付完成之后,异步回掉的处理

技术分享
 1 /// <summary>
 2 
 3         /// 微信支付回调地址
 4 
 5         /// </summary>
 6 
 7         /// <param name="tenantId"></param>
 8 
 9         /// <returns></returns>
10 
11         [Route("PayNotify/{tenantId}")]
12 
13         [AllowAnonymous]
14 
15         public ActionResult PayNotify(int tenantId)
16 
17         {
18 
19             Action<NotifyResult> successAction = (result) =>
20 
21             {
22 
23                 using (var context = new AppDbContext())
24 
25                 {
26 
27                     var order = context.Order_Infos.FirstOrDefault(o => o.Code == result.OutTradeNo);
28 
29                     if (null != order)
30 
31                     {
32 
33                         //修改订单状态
34 
35                         order.State = EnumOrderStatus.Overhang;
36 
37                         order.ThirdPayType = EnumThirdPayType.WX;
38 
39                         order.PaymentOn = DateTime.Now;
40 
41                         order.UpdateTime = DateTime.Now;
42 
43                         context.SaveChanges();
44 
45  
46 
47  
48 
49                     }
50 
51                     else
52 
53                     {
54 
55                         logger.Log(LoggerLevels.Debug, "Order information does not exist!");
56 
57                     }
58 
59                 }
60 
61                 //此处编写成功处理逻辑
62 
63                 logger.Log(LoggerLevels.Debug, "Success: JSON:" + JsonConvert.SerializeObject(result));
64 
65             };
66 
67             Action<NotifyResult> failAction = (result) =>
68 
69             {
70 
71                 //此处编写失败处理逻辑
72 
73                 logger.Log(LoggerLevels.Debug, "Fail: JSON:" + JsonConvert.SerializeObject(result));
74 
75             };
76 
77             return Content(WeiChatApisContext.Current.TenPayV3Api.NotifyAndReurnResult(Request.InputStream, successAction, failAction));
78 
79         }
View Code

当前是mvc项目,所以我建了一个webapi控制器,路由地址是http://xx.com/api/ PayNotify/{tenantId},tenantId是租户id,非必填,但是如果没有,要记得把路由里面的参数也去掉。这个地址就是本文前面配置的回调地址,一定要配置正确

然后是调用微信的统一下单的方法

技术分享
 1 /// <summary>
 2 
 3         /// 微信支付(统一下单)
 4 
 5         /// </summary>
 6 
 7         /// <param name="id"></param>
 8 
 9         /// <returns></returns>
10 
11         [HttpGet]
12 
13         [Route("Pay/{id}")]
14 
15         public IHttpActionResult WechatPay(Guid id)
16 
17         {
18 
19             try
20 
21             {
22 
23                 //查询订单
24 
25                 var order = db.Order_Infos.SingleOrDefault(o => o.Id == id && o.OpenId == WeiChatApplicationContext.Current.WeiChatUser.OpenId);
26 
27                 if (null == order)
28 
29                     return BadRequest("订单信息不存在");
30 
31                 #region 统一下单
32 
33                 var model = new UnifiedorderRequest();
34 
35                 model.OpenId = WeiChatApplicationContext.Current.WeiChatUser.OpenId;
36 
37                 model.SpbillCreateIp = "8.8.8.8";
38 
39                 model.OutTradeNo = order.Code;
40 
41                 model.TotalFee = Convert.ToInt32((order.TotalPrice + order.Shipping) * 100).ToString();
42 
43                 model.NonceStr = PayUtil.GetNoncestr();
44 
45                 model.TradeType = "JSAPI";
46 
47                 model.Body = "购买商品";
48 
49                 model.DeviceInfo = "WEB";
50 
51                 var result = WeiChatApisContext.Current.TenPayV3Api.Unifiedorder(model);
52 
53  
54 
55                 Dictionary<string, string> _dict = new Dictionary<string, string>();
56 
57                 _dict.Add("appId", result.AppId);
58 
59                 _dict.Add("timeStamp", PayUtil.GetTimestamp());
60 
61                 _dict.Add("nonceStr", result.NonceStr);
62 
63                 _dict.Add("package", "prepay_id=" + result.PrepayId);
64 
65                 _dict.Add("signType", "MD5");
66 
67                 _dict.Add("paySign", PayUtil.CreateMd5Sign(_dict, WeiChatConfigManager.Current.GetPayConfig().TenPayKey));
68 
69                 #endregion
70 
71                 return Ok(_dict);
72 
73             }
74 
75             catch (Exception ex)
76 
77             {
78 
79                 log.Log(LoggerLevels.Error, "WechatPay:" + ex.Message);
80 
81             }
82 
83             return BadRequest("操作失败,请联系管理员!");
84 
85         }
View Code

这也是一个webapi或mvc控制器,给前台页面调用,作用是通过微信的统一下单方法获取微信的预付单,然后再生成一个供给jssdk调用的对象。

 

页面上的jssdk调用方法

技术分享
 1 function onBridgeReady(data) {
 2 
 3             WeixinJSBridge.invoke(getBrandWCPayRequest, data, function (res) {
 4 
 5                 is_suc = true;
 6 
 7                 if (res.err_msg == "get_brand_wcpay_request:ok") { //支付成功后
 8 
 9                     location.href = @Url.TenantAction("PaySuccess", "Personal");
10 
11                 } else {
12 
13  
14 
15                 }
16 
17             });
18 
19         }
20 
21         function CallPay(data) {
22 
23             if (typeof WeixinJSBridge == "undefined") {
24 
25                 if (document.addEventListener) {
26 
27                     document.addEventListener(WeixinJSBridgeReady, onBridgeReady(data), false);
28 
29                 } else if (document.attachEvent) {
30 
31                     document.attachEvent(WeixinJSBridgeReady, onBridgeReady(data));
32 
33                     document.attachEvent(onWeixinJSBridgeReady, onBridgeReady(data));
34 
35                 }
36 
37             } else {
38 
39                 onBridgeReady(data);
40 
41             }
42 
43         }
44 
45  
46 
47 this.toPay = function () {
48 
49                 wc.restApi.get({
50 
51                     isBlockUI: false,
52 
53                     url: /api/MyOrder/Pay/ + _orderid,
54 
55                     success: function (result) {
56 
57                         CallPay(ko.toJS(result));
58 
59                     }
60 
61                 });
62 
63             }
View Code

注意这里,这里先是通过ajax请求到我们前面所写的微信统一下单那个action,然后获取到返回的那个对象

关于ko.toJS(),这是knockout里面的方法,作用是把result处理成json对象。

 

好了,到此微信支付已经处理完了,详细代码请移步http://github.com/xin-lai下载最新源码。

 

公众号微信支付

原文:http://www.cnblogs.com/smileyearn/p/5958330.html

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