Java电脑扫码支付
借我丹青妙笔 人气:0一、准备工作
1、注册支付宝开放平台账号，成为开发者。
地址：https://open.alipay.com/platform/home.htm
2、进入沙箱，进行配置。
3.我们可以看到这个界面
4.后面需要使用的参数
- APPID
- 商户私钥（使用系统默认密钥的公钥模式，点击查看获取）
- 支付宝公钥
- 支付宝网关
5、手机上下载沙箱支付宝 （到时候支付用这个支付宝支付）
6、下载好支付宝沙箱版后，登录支付宝提供的账号
二、效果展示
1、随手写的一个前台vue界面
2、进入确定订单界面，可以添加商品描述
3、跳转支付界面，利用沙箱支付宝完成支付
4、完成支付
5、跳回自己设置的界面
三、实现代码
3.1 后台代码
（我这里利用的是SpringBoot集成的SSM,当然不使用SpringBoot也可以）
3.1.1 pom.xml文件
不用全部的，重点是 ：支付宝sdk包、fastjson
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.zking</groupId>
<artifactId>springboot02</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot02</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<spring-boot.version>2.1.18.RELEASE</spring-boot.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.44</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>RELEASE</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.4.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
<version>2.6.2</version>
</dependency>
<!-- 支付宝sdk包 -->
<dependency>
<groupId>com.alipay.sdk</groupId>
<artifactId>alipay-sdk-java</artifactId>
<version>3.1.0</version>
</dependency>
<!-- fastjson -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.48</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
<!-- mvn mybatis-generator:generate -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<verbose>true</verbose>
<overwrite>true</overwrite>
<!--配置文件的位置-->
<configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>2.1.18.RELEASE</version>
<configuration>
<mainClass>com.zking.springboot02.Springboot02Application</mainClass>
</configuration>
<executions>
<execution>
<id>repackage</id>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
3.1.2 model包
package com.zking.springboot02.model;
import lombok.Data;
/**
* 支付实体对象
* 根据支付宝接口协议，其中的属性名，必须使用下划线，不能修改
*
* @author 借我丹青妙笔
*/
@Data
public class AlipayBean {
private static final long serialVersionUID = 1L;
/**
* 商户订单号，必填
*
*/
private String out_trade_no;
/**
* 订单名称，必填
*/
private String subject;
/**
* 付款金额，必填
* 根据支付宝接口协议，必须使用下划线
*/
private String total_amount;
/**
* 商品描述，可空
*/
private String body;
/**
* 超时时间参数
*/
private String timeout_express= "10m";
/**
* 产品编号
*/
private String product_code= "FAST_INSTANT_TRADE_PAY";
public String getOut_trade_no() {
return out_trade_no;
}
public void setOut_trade_no(String out_trade_no) {
this.out_trade_no = out_trade_no;
}
public String getSubject() {
return subject;
}
public void setSubject(String subject) {
this.subject = subject;
}
public String getTotal_amount() {
return total_amount;
}
public void setTotal_amount(String total_amount) {
this.total_amount = total_amount;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
}
3.1.3 utils包AlipayConfig类
（请配置好该类,防止报错）
- appId：APPID,沙箱应用提供的
- privateKey: 商户私钥,点击公钥证书查看
- returnUrl : 支付完成后跳转的页面，例如我填的是：http://localhost:8088/
package com.zking.springboot02.utils;
import lombok.Data;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
/**
* 配置文件读取
*
*/
@Configuration
@Data
@Component
public class AlipayConfig {
/**
* 应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号
*/
private String appId = "";
/**
* 商户私钥，您的PKCS8格式RSA2私钥
*/
private String privateKey = "";
/**
* 支付宝公钥,
*/
private String publicKey = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyqAN9WzWigim0/3fBK97RFZ7Juu31+DfXMVHTHSTP+4WPvr80zTiIQmT9xTFVGBgD8BBX0XELxqLQxsYQm/MgEgccHTnCKPP7Ci979YuwZyjOysdTc6BNO/6RqPZruih6wSYDJNuJUgY/hwuWi+owUDbHL7NvZ8r/TaIJvEzzhJVrTMsIBQBe66LRE7gE2avwEV8Qck9e4yexsDUD7ja1+2T1ltfHAP2u/SBOD+7PkkPgVkINPDHt4bXZ9DIhPhosiw8IidEEniXj/Ku1wtgETll/btJljhhXq98JHBlw94+yx+BQ+9s2S2CjXkxfdZDB9s+jFy80e6UIV76xxfB0QIDAQAB";
/**
* 服务器异步通知页面路径需http://格式的完整路径，不能加?id=123这类自定义参数
*/
private String notifyUrl = "https://www.duan33f.top";
/**
* 页面跳转同步通知页面路径 需http://格式的完整路径.
* 支付完成后返回的地址
*/
private String returnUrl = "";
/**
* 签名方式
*/
private String signType = "RSA2";
/**
* 字符编码格式
*/
private String charset = "utf-8";
/**
* 支付宝网关
*/
private String gatewayUrl = "https://openapi.alipaydev.com/gateway.do";
/**
* 支付宝网关
*/
private String logPath = "C:\\";
}
Alipay类
package com.zking.springboot02.utils;
import com.alibaba.fastjson.JSON;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.zking.springboot02.model.AlipayBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
/**
* 支付宝支付接口
* @author 借我丹青妙笔
*/
@Component
public class Alipay {
@Autowired
private AlipayConfig alipayConfig;
/**
* 支付接口
* @param alipayBean
* @return
* @throws AlipayApiException
*/
public String pay(AlipayBean alipayBean) throws AlipayApiException {
// 1、获得初始化的AlipayClient
String serverUrl = alipayConfig.getGatewayUrl();
String appId = alipayConfig.getAppId();
String privateKey = alipayConfig.getPrivateKey();
String format = "json";
String charset = alipayConfig.getCharset();
String alipayPublicKey = alipayConfig.getPublicKey();
String signType = alipayConfig.getSignType();
String returnUrl = alipayConfig.getReturnUrl();
String notifyUrl = alipayConfig.getNotifyUrl();
//System.out.println(appId);
AlipayClient alipayClient = new DefaultAlipayClient(serverUrl, appId, privateKey, format, charset, alipayPublicKey, signType);
// 2、设置请求参数
AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
// 页面跳转同步通知页面路径
alipayRequest.setReturnUrl(returnUrl);
// 服务器异步通知页面路径
alipayRequest.setNotifyUrl(notifyUrl);
// 封装参数
alipayRequest.setBizContent(JSON.toJSONString(alipayBean));
// 3、请求支付宝进行付款，并获取支付结果
String result = alipayClient.pageExecute(alipayRequest).getBody();
// 返回付款信息
return result;
}
}
3.1.4 Service包
PayService接口
package com.zking.springboot02.service;
import com.alipay.api.AlipayApiException;
import com.zking.springboot02.model.AlipayBean;
/**
* 支付服务
* @author 借我丹青妙笔
* @date Dec 12, 2018
*/
public interface PayService {
/**
* 支付宝支付接口
* @param alipayBean
* @return
* @throws AlipayApiException
*/
String aliPay(AlipayBean alipayBean) throws AlipayApiException;
}
PayServiceImpl类
package com.zking.springboot02.service.impl;
import com.alipay.api.AlipayApiException;
import com.zking.springboot02.model.AlipayBean;
import com.zking.springboot02.service.PayService;
import com.zking.springboot02.utils.Alipay;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service
public class PayServiceImpl implements PayService {
@Resource
private Alipay alipay;
@Override
public String aliPay(AlipayBean alipayBean) throws AlipayApiException {
return alipay.pay(alipayBean);
}
}
3.1.5 contorller包
payController类
package com.zking.springboot02.contorller;
import com.alipay.api.AlipayApiException;
import com.zking.springboot02.model.AlipayBean;
import com.zking.springboot02.service.PayService;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
import java.util.HashMap;
import java.util.Map;
@RestController
@RequestMapping("/pay")
@CrossOrigin
public class PayController {
@Resource
private PayService payService;
/**
* 阿里支付
* @param alipayBean
* @return
* @throws AlipayApiException
*/
@PostMapping("/alipay")
public Map alipay(AlipayBean alipayBean) throws AlipayApiException {
System.out.println(alipayBean);
Map<String,Object> map = new HashMap<String,Object>();
String str = payService.aliPay(alipayBean);
System.out.println(str);
map.put("msg",str);
map.put("code",0);
//
return map;
}
}
3.1.6 application.yml文件
server:
port: 8080 #端口号
servlet:
context-path: /s02 #项目名
3.2 前台代码
（前台是利用脚手架搭建的Vue项目）
3.2.1 src下api包下action.js文件
/**
* 对后台请求的地址的封装，URL格式如下：
* 模块名_实体名_操作
*/
export default {
//服务器
'SERVER': 'http://localhost:8080/s02',
'alipay' : 'http://localhost:8080/s02/pay/alipay',
//获得请求的完整地址，用于mockjs测试时使用
'getFullPath': k => {
return this.SERVER + this[k];
}
}
3.2.2 src下api包下http.js文件
/**
* vue项目对axios的全局配置
*/
import axios from 'axios'
import qs from 'qs'
//引入action模块，并添加至axios的类属性urls上
import action from '@/api/action'
axios.urls = action
// axios默认配置
axios.defaults.timeout = 10000; // 超时时间
// axios.defaults.baseURL = 'http://localhost:8080/crm'; // 默认地址
axios.defaults.baseURL = action.SERVER;
//整理数据
// 只适用于 POST,PUT,PATCH，transformRequest` 允许在向服务器发送前，修改请求数据
axios.defaults.transformRequest = function(data) {
data = qs.stringify(data);
return data;
};
// 请求拦截器
axios.interceptors.request.use(function(config) {
// let jwt = sessionStorage.getItem('jwt');
// if (jwt) {
// config.headers['jwt'] = jwt;
// }
return config;
}, function(error) {
return Promise.reject(error);
});
// 响应拦截器
axios.interceptors.response.use(function(response) {
return response;
}, function(error) {
return Promise.reject(error);
});
export default axios;
3.2.3 src下router下index.js文件
import Vue from 'vue'
import Router from 'vue-router'
import Shop from '@/views/Shop'
import buy from '@/views/buy'
Vue.use(Router)
export default new Router({
routes: [
{
path: '/',
name: 'Shop',
component: Shop
},
{
path: '/buy',
name: 'buy',
component: buy
}
]
})
3.2.4 src下views下Shop.vue文件
<template>
<el-table :data="tableData" style="width: 100%">
<el-table-column prop="out_trade_no" label="编号">
</el-table-column>
<el-table-column prop="subject" label="订单名称" >
</el-table-column>
<el-table-column prop="total_amount" label="付款金额">
</el-table-column>
<el-table-column label="操作">
<template slot-scope="scope">
<el-button @click="toBuy(scope.row)" type="text" size="small">去支付</el-button>
</template>
</el-table-column>
</el-table>
</template>
<script>
export default {
name: "Shop",
data: function() {
return {
tableData: [{
out_trade_no: '101',
subject: 'Java从入门到入土',
total_amount: 33
}, {
out_trade_no: '202',
subject: 'Mysql删库跑路指南',
total_amount: 44
}, {
out_trade_no: '303',
subject: 'Java编程思想',
total_amount: 89
}, {
out_trade_no: '404',
subject: 'Java设计模式',
total_amount: 56
}]
};
},
methods: {
toBuy(row){
console.log(row);
//利用$router.push进行跳转
this.$router.push({
//path后面跟跳转的路由地址
path: '/buy',
//name后面跟跳转的路由名字（必须有亲测，不使用命名路由会传参失败）
name: 'buy',
params: {
//imgsListsUrl2是自己定义的名字，this.imgsListsUrl是要被传递的值
payInfo: row
}
})
}
},
created: function() {
}
}
</script>
<style>
</style>
3.2.5 src下views下buy.vue文件
<template>
<div class="main">
<center>
<div class="box">
<h2>确定订单</h2>
<el-form :model="payInfo" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
<el-form-item label="订单号" prop="out_trade_no">
<el-input v-model="payInfo.out_trade_no" readonly="true"></el-input>
</el-form-item>
<el-form-item label="商品名称" prop="subject">
<el-input v-model="payInfo.subject" readonly="true"></el-input>
</el-form-item>
<el-form-item label="商品价格" prop="total_amount">
<el-input v-model="payInfo.total_amount" readonly="true"></el-input>
</el-form-item>
<el-form-item label="商品描述" prop="body">
<el-input v-model="payInfo.body"></el-input>
</el-form-item>
<el-button type="primary" plain @click="submit" style="width: 100%;" round>付款</el-button>
</el-form>
</div>
</center>
</div>
</template>
<script>
//import axios from 'axios'
export default {
name: "buy",
data() {
return {
payInfo: {
out_trade_no: '',
subject: '',
total_amount: null,
body: ''
}
}
},
mounted() {
//this.$route.params.imgsListsUrl2是传过来的参数
var time = new Date();
this.payInfo = this.$route.params.payInfo
this.payInfo.out_trade_no = time.getTime();
},
methods: {
submit() {
var url = this.axios.urls.alipay;//得到api下action.js中的alipay
this.axios.post(url, this.payInfo).then(resp => {//调用后台方法
console.log(resp);
const divForm = document.getElementsByTagName('div')
if (divForm.length) {
document.body.removeChild(divForm[0])
}
const div = document.createElement('div')
div.innerHTML = resp.data.msg // data就是接口返回的form 表单字符串
document.body.appendChild(div)
document.forms[0].setAttribute('target', '_blank') // 新开窗口跳转
document.forms[0].submit()
}).catch(resp => {
console.log(resp);
});
}
}
}
</script>
<style scoped>
.box {
width: 800px;
}
.left {
width: 85px;
padding-top: 5px;
font-size: 15px;
}
.right {
width: 400px;
}
</style>
3.2.6 src下main.js文件
import Vue from 'vue'
import ElementUI from 'element-ui' //新添加1
import 'element-ui/lib/theme-chalk/index.css' //新添加2，避免后期打包样式不同，要放在import App from './App';之前
import axios from '@/api/http' //vue项目对axios的全局配置
import App from './App'
import router from './router'
import VueAxios from 'vue-axios'
Vue.use(VueAxios,axios)
Vue.use(ElementUI) //新添加3
Vue.config.productionTip = false
/* eslint-disable no-new */
new Vue({
el: '#app',
router,
components: { App },
template: '<App/>'
})
OK,重要的代码已经完全提供了。
声明：实现沙箱支付可以让我们了解如何调用如支付宝的接口，让我们理解接口的调用。
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