本帖仅供参考，非官方demo

一、文档地址

文档地址：点击【查看】

sdk下载：点击【查看】

官方demo下载地址：点击【查看】

二、开发前准备工作

1、签约：[url]https://openclub.alipay.com/read.php?tid=276&fid=72[/url]

2、创建应用：[url]https://openclub.alipay.com/read.php?tid=1606&fid=72[/url]

3、生成密钥：[url]https://openclub.alipay.com/read.php?tid=1833&fid=69[/url]

4、下载服务端sdk：[url]https://docs.open.alipay.com/54/106370/[/url]

如何签约以及签约无法成功等相关签约问题：[url]https://openclub.alipay.com/read.php?tid=276&fid=72[/url]

检查调用appid的应用功能列表中是否添加“电脑网站支付”并显示已签约。

三、接口集成示例代码

1、参数说明

（1）out_trade_no：商户订单号，由商户自定义设置；

（2）subject：商品标题；

（3）product_code：固定产品码值：FAST_INSTANT_TRADE_PAY；

（4）total_amount：交易订单金额，精确到小数点后2位，最小设置为0.01；

2、JAVA版请求示例

（适用于jdk1.5以上）

	//获得初始化的AlipayClient
		AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);
		//设置请求参数
		AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
		//同步通知地址：支付成功后页面自动跳转到传值地址中
		alipayRequest.setReturnUrl("https://docs.open.alipay.com/200");
		//异步通知地址：支付成功生成之后会post返回订单信息详情到该地址，用于商家做业务逻辑处理
		alipayRequest.setNotifyUrl("https://docs.open.alipay.com/200");
	    AlipayTradePagePayModel model = new AlipayTradePagePayModel();
		model.setSubject("电脑网站支付测试");
		model.setTotalAmount("0.01");
		model.setProductCode("FAST_INSTANT_TRADE_PAY");
		//自定义参数请转码后传入该参数内，可以传值逗号，等号之类，但不能传引号，否则会报错，其他特殊符号是否报错以实测为准
		String passback_params	 = "{ab=测试一下;tdst=公共参数;ccsd=gds；dfa=23·12}";
		String passback_params2 =URLEncoder.encode(passback_params,"UTF-8");
		model.setPassbackParams(passback_params2);
		alipayRequest.setBizModel(model);
		/**	
		 * BizContent传值模式
   alipayRequest.setBizContent("{\"out_trade_no\":\"20150320010101001\"," 
				+ "\"total_amount\":\"88.88\","  
				+ "\"subject\":\"subject\"," 
				+ "\"qr_pay_mode\":\"4\"," 
				+ "\"timeout_express\":\"1m\"," 
				+ "\"passback_params2\":\"passback_params2\"," 
				+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
				
				**/
		//get请求方式，返回http链接  
		AlipayTradePagePayResponse respose = alipayClient.pageExecute(alipayRequest,"get");
		
		//post请求方式，返回from表单 
		//AlipayTradePagePayResponse respose = alipayClient.pageExecute(alipayRequest);
		
		//打印请求信息
		System.out.println(respose.getBody());

3、PHP版请求示例

（适用于ph5.5以上环境） 

<?php

require_once 'AopSdk.php';
$aop = new AopClient ();
$aop->appId = '填写您的appid';
$aop->rsaPrivateKey = '填写您的私钥';
$aop->alipayrsaPublicKey='填写您的支付宝公钥';
$aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';
$aop->apiVersion = '1.0';
$aop->postCharset='utf-8';
$aop->format='json';
$aop->signType = 'RSA2';

//生成随机订单号
$date=date("YmdHis");
$arr=range(1000,9999);
shuffle($arr);
$request = new AlipayTradePagePayRequest();
//收款方账户类型为：ALIPAY_LOGONID：支付宝登录号，支持邮箱和手机号格式。
$request->setBizContent("{" .
    ""out_trade_no":"".$date.$arr[0].""," .
    ""total_amount":"0.1"," .
	""subject":"电脑网站支付测试"," .
    ""product_code":"FAST_INSTANT_TRADE_PAY"" .
    "}");
//get请求,返回链接
$result = $aop->pageExecute($request,"get");
//post请求，返回表单
//$result = $aop->pageExecute($request);

print_r(htmlspecialchars($result));
?>

4、.NET版请求示例

注：适用于Visual studio 2010及以上版本、Framework3.5 SP1及以上版本的开发环境

沙箱测试代码示例：

using Aop.Api;
using Aop.Api.Request;
using Aop.Api.Response;
using System;
using System.IO;

/**
 * 沙箱电脑网站支付
 * 文档地址：[url]https://docs.open.alipay.com/270/alipay.trade.page.pay[/url]
 * */
namespace AlipayTradePagePay
{
    class Program
    {
        //沙箱支付宝公钥，查看地址：[url]https://openhome.alipay.com/platform/appDaily.htm[/url]
        public static string alipay_public_key = @"支付宝公钥";

        //沙箱pkcs1私钥，千万不要用pkcs8格式的 ,如何获取，请查看：[url]https://openclub.alipay.com/read.php?tid=1833&fid=25[/url]
        public static string merchant_private_key = @"私钥";

        static void Main(string[] args)
        {
            //初始化
            IAopClient alipayClient = new DefaultAopClient("https://openapi.alipaydev.com/gateway.do", "appid", merchant_private_key, "json", "1.0", "RSA2", alipay_public_key, "utf-8", false);
            AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();
            //请求参数设置
            request.BizContent = "{"out_trade_no":"201810201450FDSa","subject":"沙箱测试","product_code":"FAST_INSTANT_TRADE_PAY","total_amount":"0.01"}";
            //同步跳转地址，用于订单支付成功之后同步跳转
            request.SetReturnUrl("https://docs.open.alipay.com/200");
            //异步跳转地址，用于接收异步返回结果
            request.SetNotifyUrl("https://docs.open.alipay.com/200");
            //默认是post请求方式，返回form表单
            AlipayTradePagePayResponse response = alipayClient.pageExecute(request);
            //get请求方式，返回请求链接
            //AlipayTradePagePayResponse response = client.pageExecute(alipayRequest, "", "GET");
            //打印返回结果
            Console.WriteLine(response.Body);
        }

        // 私钥文件类型转换成纯文本类型 返回过滤后的字符串类型私钥
        public static string getMerchantPriveteKeyStr()
        {
            StreamReader sr = new StreamReader(merchant_private_key);
            string pubkey = sr.ReadToEnd();
            sr.Close();
            if (pubkey != null)
            {
                pubkey = pubkey.Replace("-----BEGIN PUBLIC KEY-----", "");
                pubkey = pubkey.Replace("-----END PUBLIC KEY-----", "");
                pubkey = pubkey.Replace("r", "");
                pubkey = pubkey.Replace("n", "");
            }
            return pubkey;
        }
    }
}

post请求返回结果：

<form id='alipaysubmit' name='alipaysubmit' action='https://openapi.alipaydev.com/gateway.do?charset=utf-8' method='get' style='display:none;'><input  name='app_id' value='2016101800718925'/><input  name='biz_content' value='{"out_trade_no":"201810201450FDSa","subject":"沙箱测试","product_code":"FAST_INSTANT_TRADE_PAY","total_amount":"0.01"}'/><input  name='charset' value='utf-8'/><input  name='format' value='json'/><input  name='method' value='alipay.trade.page.pay'/><input name='notify_url' value='https://docs.open.alipay.com/200'/><input  name='return_url' value='https://docs.open.alipay.com/200'/><input  name='sign_type' value='RSA2'/><input  name='timestamp' value='2018-05-10 10:22:40'/><input  name='version' value='1.0'/><input  name='sign' value='iQ0YEXzDlVDMtQoLZg6plCvZnknTrM7/UcbsFPOxF4DiDsZTcqDxkGHngxrUHq4fqlJCiVT6c5PanCpHDhJ9qb2xZenw/hWaakwQ4AR1xyl7sC21C37fB6Z68lE6CVqqsIzsOok0An4UsbJ8iPrQnBy7HZjF/DqU5CT/hUy/0mczcyCcS7GhzIZGLfeWKULEpDnghJpYLcIDZQ7UNxxj/gRY4+6QnE9EiuuyEDMba4X47y/KUqPBaXeCL72VKfbx9hif299BBBv6y88cbWh/zbr/wqB568AYYhaXX5P74/0O6alnVFiq5MIMR6n4d34IKe1hAAb+jNN1+dz3jssxPA=='/><input type='submit' value='get' style='display:none