1、进入支付宝去申请appid和密钥 https://open.alipay.com/platform/home.htm 支付宝开放平台
2、下载sdk根据自己是啥开发语言下载啥
3、开始写代码
后台请求参数和方式
/// <summary>
/// 支付宝支付
/// </summary>
/// <param name="model"></param>
/// <param name="configPath"></param>
/// <returns></returns>
public string Alipay(HttpContext context)
{
string OrderNumber = "" ;//订单号,此单号必须唯一
string app_id = ""; //"你的app_id";
string merchant_private_key = "";//"支付宝私钥";
string alipay_public_key = "";// "支付宝公钥";
string timeout_express = "30m";//订单有效时间（分钟）
string postUrl = "https://openapi.alipay.com/gateway.do";//这个地址都是固定的
string sign_type = "RSA2";//加签方式 有两种RSA和RSA2 我这里使用的RSA2（支付宝推荐的）
string version = "1.0";//固定值 不用改
string format = "json";//固定值
string Amount = "0.01";//订单金额
string method = "alipay.trade.wap.pay";//调用接口 固定值 不用改
IAopClient client = new DefaultAopClient(postUrl, app_id, merchant_private_key, format, version, sign_type, alipay_public_key, "UTF-8", false);
AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();
request.SetNotifyUrl("");//后台回调地址
request.SetReturnUrl("");//前台回调地址
request.BizContent = "{" +
" \"body\":\"对一笔交易的具体描述信息。如果是多种商品，请将商品描述字符串累加传给body。\"," +
" \"subject\":\"商品描述\"," +
" \"out_trade_no\":\"" + OrderNumber + "\"," + //商家唯一订单，填写你项目里生成的唯一订单号
" \"timeout_express\":\"" + timeout_express + "\"," +
" \"total_amount\":" + Amount + "," +
" \"product_code\":\"" + method + "\"" +
" }";
AlipayTradeWapPayResponse response = client.pageExecute(request);
string form = response.Body.Substring(0, response.Body.IndexOf("<script>"));
return form;
}
页面上的请求方式(这里为了方便写的非常简单)
<head runat="server">
<meta name="viewport" content="width=device-width" />
<script src="Scripts/jquery-1.7.1.js"></script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="支付啊" OnClick="Button1_Click" />
</div>
<div id="formDiv" style="display:none;">
</div>
</div>
<script type="text/javascript">
$(function(){
$("#Button1").click(function () {
$.ajax({
url: "Handler1.ashx", //页面上是到一般处理程序中处理的
data: {"action": "Alipay" },
type: "POST",
cache: false,
async: true,
success: function (data) {
alert(data);
if (data != "") {
$("#formDiv").append(data);
$("#alipaysubmit").submit(); //返回的是form表单 直接提交就可以了.
}
}
});
});
});
});
</script>
</form>
</body>