java支付宝开发-02-手机网站支付

news/2024/5/12 5:06:14/文章来源:https://blog.csdn.net/didi9310/article/details/102125930

源码已上传github，欢迎专注：https://github.com/shirayner/alipay-wap

一、基础部分

1.手机网站支付产品介绍

1.1 阅读官方介绍：手机网站支付产品介绍

1.2 看完官方的介绍之后，可以做出如下总结：

通过接入此接口，能让商家接入支付宝的支付功能。具体支付流程如下：

（1）若用户已安装支付宝客户端，则在支付时会唤起支付宝客户端进行支付。

（2）若用户未安装支付宝客户端，则需要在网页中登录支付宝账号进行支付。

2.接入准备

参考：java支付宝开发-01-沙箱环境接入，配置好沙箱环境，并下载好沙箱钱包

二、代码实现

1.AlipayConfig

此文件主要存放支付宝的一些配置信息，大家需要登录沙箱环境，找到相关配置参数，并据此修改配置文件。

package com.ray.alipaywap.config;/*** @author : shirayner* @date : 2018/3/9* @time : 9:36* @desc : 支付宝的相关配置**/
public class AlipayConfig {//支付宝网关名-正式环境//public static final String OPEN_API_DOMAIN="https://openapi.alipay.com/gateway.do";//支付宝网关名-沙箱环境public static final String OPEN_API_DOMAIN="https://openapi.alipaydev.com/gateway.do";/**  一、应用相关**//*** 1.应用ID*/public static final String APP_ID="2016091100487746";/*** 2.应用私钥*/public static final String APP_PRIVATE_KEY="应用私钥";/*** 3.应用公钥*/public static final String APP_PUBLIC_KEY="应用公钥";/*** 4.支付宝公钥*/public static final String ALIPAY_PUBLIC_KEY="支付宝公钥";/*** 二、商家相关*//*** 1.app域名* 需要改成自己应用的地址*/public static final String APP_DOMAIN = "http://rayge.nat300.top";    /*** 2.回跳url* 即付款之后跳回到此页面。注：沙箱环境下，有bug，不会跳到此页面。正式环境下正常。*/public static final String RETURN_URL = APP_DOMAIN + "/return_url.jsp";/*** 3.通知url*/public static final String NOTIFY_URL = APP_DOMAIN + "/notify_url.jsp";/*** 三、此部分不用修改*//*** 5.app_auth_token在ISV代替商家调用接口时使用，商家自己调用，可传null。*/public static final String APP_AUTH_TOKEN="";public static final String SIGN_TYPE = "RSA2";public static final String CHAR_SET = "UTF-8";public static final String FORMAT = "json";
}

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2.service

2.1 接口——WapPayService

package com.ray.alipaywap.service;import com.alipay.api.response.AlipayTradeWapPayResponse;/*** @author : shirayner* @date : 2018/3/12* @time : 10:48* @desc :**/
public interface WapPayService {public  AlipayTradeWapPayResponse pay(String content) throws Exception;}

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2.2 实现类——WapPayServiceImpl

package com.ray.alipaywap.service.impl;import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradeWapPayRequest;
import com.alipay.api.response.AlipayTradeWapPayResponse;
import com.ray.alipaywap.config.AlipayConfig;
import com.ray.alipaywap.service.WapPayService;/*** @author : shirayner* @date : 2018/3/12* @time : 11:02* @desc :**/
public class WapPayServiceImpl  implements WapPayService{// 初始化alipayClient对象public static AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.OPEN_API_DOMAIN, AlipayConfig.APP_ID, AlipayConfig.APP_PRIVATE_KEY, AlipayConfig.FORMAT,AlipayConfig.CHAR_SET, AlipayConfig.ALIPAY_PUBLIC_KEY);/***  手机网站支付* @param content 订单信息* @return* @throws AlipayApiException*/@Overridepublic AlipayTradeWapPayResponse pay(String content) throws AlipayApiException {//1. 创建API对应的requestAlipayTradeWapPayRequest alipayRequest = new AlipayTradeWapPayRequest();//2. 在公共参数中设置回跳和通知地址(应用提供给支付宝的请求路径),沙箱模式中不起作用(不知道是不是这个原因,支付宝技术客服告诉我正式上线后就没问题)alipayRequest.setReturnUrl(AlipayConfig.APP_DOMAIN+"/index.jsp");alipayRequest.setNotifyUrl(AlipayConfig.NOTIFY_URL);// 填充业务参数
        alipayRequest.setBizContent(content);//3.执行请求AlipayTradeWapPayResponse alipayResponse = alipayClient.pageExecute(alipayRequest);return alipayResponse;}
}

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3. servlet-WapPayServlet

接收前台订单信息，并调用支付宝接口，来唤起支付宝app来进行支付。

package com.ray.alipaywap.controller;import com.alipay.api.response.AlipayTradeWapPayResponse;
import com.ray.alipaywap.config.AlipayConfig;
import com.ray.alipaywap.service.WapPayService;
import com.ray.alipaywap.service.impl.WapPayServiceImpl;import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;public class WapPayServlet extends javax.servlet.http.HttpServlet {private WapPayService wapPayService;@Overridepublic void init() throws ServletException {super.init();wapPayService = new WapPayServiceImpl();}@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse resp) throws ServletException, IOException {//1.设置将发送到客户端的响应的内容类型resp.setContentType("text/html;charset="+ AlipayConfig.CHAR_SET);//1.1String subject = request.getParameter("subject");String total_amount = request.getParameter("total_amount");String  out_trade_no = String.valueOf(System.currentTimeMillis());//1.2//2.填充业务参数String content="{" +" \"out_trade_no\":\""+out_trade_no+"\"," +" \"total_amount\":\""+total_amount+"\"," +" \"subject\":\""+subject+"\"," +" \"product_code\":\"QUICK_WAP_PAY\"" +" }";//3.去支付AlipayTradeWapPayResponse alipayResponse= null;try {alipayResponse = wapPayService.pay(content);} catch (Exception e) {e.printStackTrace();}String form= alipayResponse.getBody();System.out.println(form);//4.输出支付宝返回的表单页面resp.setContentType("text/html;charset=" + AlipayConfig.CHAR_SET);resp.getWriter().write(form);//直接将完整的表单html输出到页面
        resp.getWriter().flush();resp.getWriter().close();}@Overrideprotected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {}}

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4.前台JSP页面

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<h2>订单详情</h2>
</body>
<form action="/wapPayServlet" method="post" >商品: <input id="subject" type="text" name="subject" value="IphoneX 128G"/>  <br><br>总价: <input id="total_amount" type="text" name="total_amount" value="99.88"/>   <br><br><input type="submit" value="提交订单" />  <br><br>
</form></html>

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5.web.xml

<!DOCTYPE web-app PUBLIC"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN""http://java.sun.com/dtd/web-app_2_3.dtd" ><web-app><display-name>Archetype Created Web Application</display-name><servlet><servlet-name>wapPayServlet</servlet-name><servlet-class>com.ray.alipaywap.controller.WapPayServlet</servlet-class></servlet><servlet-mapping><servlet-name>wapPayServlet</servlet-name><url-pattern>/wapPayServlet</url-pattern></servlet-mapping></web-app>