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
     */
    @Override
    public AlipayTradeWapPayResponse pay(String content) throws AlipayApiException {
        //1. 创建API对应的request
        AlipayTradeWapPayRequest 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;

    @Override
    public void init() throws ServletException {
        super.init();
         wapPayService = new WapPayServiceImpl();

    }

    @Override
    protected 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);

        //1.1
        String 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();

    }

    @Override
    protected 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>

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三、参考资料

1.SpringBoot_03_依赖本地jar

 

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本文链接:https://www.cnblogs.com/shirui/p/8568449.html