.net支付宝支付（最新）

[qq_31667953]

一直是无效签名，不知道改哪里，求大神指点。

下面是支付宝给的调用请求支付示例，
IAopClient client = new DefaultAopClient("https://openapi.alipay.com/gateway.do", appId, merchant_private_key, "json", "1.0", "RSA",Server.UrlEncode(alipay_public_key), charset);
AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();
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\":\"大乐透\"," +
" \"out_trade_no\":\"70501111111S001111119\"," +
" \"timeout_express\":\"90m\"," +
" \"total_amount\":9.00," +
" \"product_code\":\"QUICK_WAP_PAY\"" +
" }";
AlipayTradeWapPayResponse response = client.pageExecute(request);
string form = response.Body;
Response.Write(form);

[qq_31667953]

merchant_private_key是在官网下载的密钥生成器里生成的，不知道是不是这个的问题，也改了很多，没用

[lem12]

不要用拼接字符串 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\":\"大乐透\"," + " \"out_trade_no\":\"70501111111S001111119\"," + " \"timeout_express\":\"90m\"," + " \"total_amount\":9.00," + " \"product_code\":\"QUICK_WAP_PAY\"" + " }"; 应该用： AlipayTradeWapPayModel atwpEntity = new AlipayTradeWapPayModel(); 。。。。。 client.SetBizModel(atwpEntity);