公众号中调用支付宝支付

文章转自：https://zuoluo11.github.io/2017/07/04/%E5%BE%AE%E4%BF%A1%E5%85%AC%E4%BC%97%E5%8F%B7%E9%9B%86%E5%90%88%E6%94%AF%E4%BB%98%E5%AE%9D%E6%94%AF%E4%BB%98/ 感谢本作者

API及业务逻辑

手机网站支付API可以前往以下网址查看及下载sdk：
目前手机网站支付demo有： JAVA和PHP版本
SDK则有：JAVA、.NET和PHP版本

手机支付API

SDK下载

微信公众号集成帮助包

签名sign生成规则

代码实现

###普通手机网站用户进行确认下单页面

namespace AliPayDemo

{

public partial class Pay : System.Web.UI.Page

{

//不是真实数据

string APPID = "2017090907474487"; //应用ID

//应用私钥

string APP_PRIVATE_KEY = @ "****JEwKBgQCIFY+12QuI3gI478vsixJiYOWJb2T7MRr0Zlg2n3fnQWnVB2gOkSgls/CHM3y+d/GQRJRE5aFWa2Xt";

//支付宝公钥

string ALIPAY_PUBLIC_KEY = @ "***PXZOf8eQx+qWGky6LJZWie4IF2oqY7El1nps2qVg1IbQkDdIMNSr2a2nQF5GwSpVcF7bRZeNG2qgs3EjHu4hGqXMWbg6Fvs1iigiBYfkzQIDAQAB";

string CHARSET = "utf-8"; //编码格式

protected void Page_Load(object sender, EventArgs e)

{

//SDK已经封装掉了公共参数，只需要初始化一次

IAopClient client = new DefaultAopClient( "https://openapi.alipay.com/gateway.do", APPID, APP_PRIVATE_KEY, "json", "1.0", "RSA2", ALIPAY_PUBLIC_KEY, CHARSET, false);

//实例化具体API对应的request类,类名称和接口名称对应,当前调用接口名称如：alipay.trade.wap.pay.request

AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();

//SDK已经封装掉了公共参数，这里只需要传入业务参数

//此次只是参数展示，未进行字符串转义，实际情况下请转义

//注意value类型，如金额没有引号，

request.BizContent = "{" +

" \"subject\":\"大乐透\"," +

" \"out_trade_no\":\"70501111111S0011111191\"," +

" \"total_amount\":0.01," +

" \"product_code\":\"QUICK_WAP_WAY\"" +

" }";

AlipayTradeWapPayResponse response = client.pageExecute(request);

divBody.InnerHtml = response.Body;

调用成功，则处理业务逻辑

//if (response.IsError)

//{

// //.....

//}

}

###微信公众号内用户进行确认下单页面
1、下载集成微信公众号的帮助包并将文件放入项目文件夹中
ap.js 跳转到自带浏览器js
pay.htm 提示用户跳转htm页面
1、使用pageExecute方法，以GET方式获得url字符串；这个就得到了拼接好的支付url返回前台a标签里面就可以了

1 2	AlipayTradeWapPayResponse response = client.pageExecute(request,null,"GET"); test = response.Body;

2、将Url传入前台页面标签，待用户点击确定

1	<a id="test" href="<%=test%>" class="button button-big button-fill">支付宝结算 </a>

3、用户点击页面后跳转到提示页，提示用户使用手机自带浏览器打开连接

4、完成支付

5、整体的代码

前端

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="JsApiPayPage1.aspx.cs" Inherits="JsApiPayPage1" %>

<!DOCTYPE html>

<html>

</head>

<a id="test" href="<%=test%>" class="button">支付宝结算 </a>

</div>

</form>

</body>

</html>

//绑定单击事件

var btn = document.querySelector( "#test");

btn.addEventListener( "click", function (e) {

e.preventDefault();

e.stopPropagation();

e.stopImmediatePropagation();

//ele.href 是GET到支付宝收银台的URL

_AP.pay(e.target.href);

return false;

}, false);

</script>

using System;

using System.Collections.Generic;

using CYQ.Data;

using Web.Lianmengban_2016;

using CYQ.Data.Table;

using Aop.Api.Util;

using Aop.Api;

using Aop.Api.Request;

using Aop.Api.Response;

public partial class JsApiPayPage1 : System.Web.UI.Page

{

public static string test { get; set; }

protected void Page_Load(object sender, EventArgs e)

{

CreateAliPayPramaters();

}

private void CreateAliPayPramaters()

{

//pageExecute<T>(IAopRequest<T> request, string accessToken, string reqMethod) where T : AopResponse

IAopClient client = new DefaultAopClient( "https://openapi.alipay.com/gateway.do", AliConfig.APP_ID, AliConfig.APP_PRIVATE_KEY, "json", "1.0", "RSA2", AliConfig.ALIPAY_PUBLIC_KEY, AliConfig.CHARSET, false);

//实例化具体API对应的request类,类名称和接口名称对应,当前调用接口名称如：alipay.open.public.template.message.industry.modify

AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();

//AlipayOpenPublicTemplateMessageIndustryModifyRequest request = new AlipayOpenPublicTemplateMessageIndustryModifyRequest();

//SDK已经封装掉了公共参数，这里只需要传入业务参数

//此次只是参数展示，未进行字符串转义，实际情况下请转义

request.BizContent = "{" +

" \"subject\":\"大乐透\"," +

" \"out_trade_no\":\"70501111111S0011111191\"," +

" \"total_amount\":0.01," +

" \"product_code\":\"QUICK_WAP_WAY\"" +

" }";

AlipayTradeWapPayResponse response = client.pageExecute(request,null, "GET");

test = response.Body;

}

public class AliConfig

{

//=======【基本信息设置】=====================================

/* 支付宝手机网页支付信息配置

public const string URL = "https://openapi.alipay.com/gateway.do";

public const string APP_ID = "20170111111144";

public const string APP_PRIVATE_KEY = @"MIIEowIBAAKCAQEA31kawX3d***t";

public const string FORMAT = "json";

public const string CHARSET = "utf-8";

public const string ALIPAY_PUBLIC_KEY = @"MIIBIjANBgkqhkiG9***";

public const string SIGN_TYPE = "RSA2";

public const string SELLER_EMAIL = "1234@123.com";

public const string NOTIFY_URL = "http://www.222.net/ResultNotifyAliPay.aspx";

public const string RETURN_URL = "http://www.222.net/AliReturnPage.aspx";

}

总结及出现的问题

1、参数的内容
按照api提供的列表把必填项的key及value一定要写全，写对；
2、BizContent的业务参数内多个参数之间用“，”号隔开，之前忘记写全，报错；
3、签名错误
sign_valid

API里面生成签名，包括sign_type
接收支付宝的异步通知时，验签之前不包括sign 和 sign_type

签名sign生成规则

支付宝官方sdk有个bug，Aop.Api.Util.AlipaySignature类中方法没有去掉sign_type就进行验证，导致出错；

public static bool RSACheckV2(IDictionary<string, string> parameters, string publicKeyPem)

{

string sign = parameters[ "sign"];

parameters.Remove( "sign");

parameters.Remove( "sign_type"); //新增修改bug

string signContent = GetSignContent(parameters);

return RSACheckContent(signContent, sign, publicKeyPem, DEFAULT_CHARSET, "RSA");

}

public static bool RSACheckV2(IDictionary<string, string> parameters, string publicKeyPem, string charset)

{

string sign = parameters[ "sign"];

parameters.Remove( "sign");

parameters.Remove( "sign_type"); //新增修改bug

string signContent = GetSignContent(parameters);

return RSACheckContent(signContent, sign, publicKeyPem, charset, "RSA");

}

public static bool RSACheckV2(IDictionary<string, string> parameters, string publicKeyPem, string charset, string signType, bool keyFromFile)

{

string sign = parameters[ "sign"];

parameters.Remove( "sign");

parameters.Remove( "sign_type"); //新增修改bug

string signContent = GetSignContent(parameters);

return RSACheckContent(signContent, sign, publicKeyPem, charset, signType, keyFromFile);

}

4、交易订单处理失败请稍后再试 ali38173
转到支付宝时，弹出这个错误，找了很久，才发现是由于Bizcontent的最后一个}括号内包含一个全角的空格，很坑啊；