由于支付宝的PC端支付全流程包含了前端和后端两部分,因此需要分别编写前端和后端代码。

  1. 后端代码

支付宝的PC端支付全流程需要使用支付宝提供的SDK进行开发,以下是Java语言下的SDK使用示例。

首先需要引入SDK依赖:

<dependency>
    <groupId>com.alipay.sdk</groupId>
    <artifactId>alipay-sdk-java</artifactId>
    <version>3.3.0.ALL</version>
</dependency>

然后需要编写支付宝支付的核心代码:

// 1. 创建AlipayClient实例
AlipayClient alipayClient = new DefaultAlipayClient(
    "https://openapi.alipay.com/gateway.do",
    "APP_ID",
    "APP_PRIVATE_KEY",
    "json",
    "utf-8",
    "ALIPAY_PUBLIC_KEY",
    "RSA2"
);

// 2. 构造支付请求参数
AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();
request.setReturnUrl("http://localhost:8080/return_url");
request.setNotifyUrl("http://localhost:8080/notify_url");
request.setBizContent("{\"out_trade_no\":\"" + outTradeNo + "\","
    + "\"total_amount\":\"" + totalAmount + "\","
    + "\"subject\":\"" + subject + "\","
    + "\"body\":\"" + body + "\","
    + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

// 3. 调用接口进行支付
String form = alipayClient.pageExecute(request).getBody();

以上代码中,需要替换掉APP_ID、APP_PRIVATE_KEY、ALIPAY_PUBLIC_KEY等参数为自己的支付宝应用信息。

  1. 前端代码

支付宝的PC端支付全流程需要使用支付宝提供的支付页面进行展示和支付,以下是Vue3.0语言下的前端代码示例。

首先需要引入支付宝提供的支付页面:

<template>
  <div>
    <iframe :src="payUrl" width="100%" height="600"></iframe>
  </div>
</template>

<script>
export default {
  name: 'AlipayPayment',
  props: {
    outTradeNo: String,
    totalAmount: Number,
    subject: String,
    body: String
  },
  computed: {
    payUrl () {
      const baseUrl = 'https://openapi.alipay.com/gateway.do?'
      const appId = 'APP_ID'
      const charset = 'utf-8'
      const signType = 'RSA2'
      const timestamp = this.getTimestamp()
      const version = '1.0'
      const method = 'alipay.trade.page.pay'
      const notifyUrl = 'http://localhost:8080/notify_url'
      const returnUrl = 'http://localhost:8080/return_url'
      const bizContent = {
        out_trade_no: this.outTradeNo,
        product_code: 'FAST_INSTANT_TRADE_PAY',
        total_amount: this.totalAmount.toFixed(2),
        subject: this.subject,
        body: this.body
      }
      const sign = this.getSign({ appId, charset, bizContent, method, notifyUrl, returnUrl, signType, timestamp, version })
      const url = `${baseUrl}app_id=${appId}&method=${method}&charset=${charset}&sign_type=${signType}&timestamp=${timestamp}&version=${version}&notify_url=${notifyUrl}&return_url=${returnUrl}&biz_content=${encodeURIComponent(JSON.stringify(bizContent))}&sign=${encodeURIComponent(sign)}`
      return url
    }
  },
  methods: {
    getTimestamp () {
      return new Date().toISOString().replace(/-/g, '').replace(/:/g, '').replace(/\..+/g, '')
    },
    getSign ({ appId, charset, bizContent, method, notifyUrl, returnUrl, signType, timestamp, version }) {
      const privateKey = 'APP_PRIVATE_KEY'
      const content = Object.keys(bizContent).sort().map(key => `${key}=${bizContent[key]}`).join('&')
      const signStr = `${content}&app_id=${appId}&charset=${charset}&method=${method}&notify_url=${notifyUrl}&return_url=${returnUrl}&sign_type=${signType}&timestamp=${timestamp}&version=${version}`
      const sign = new JSEncrypt()
      sign.setPrivateKey(privateKey)
      return sign.sign(signStr, CryptoJS.SHA256, signType)
    }
  }
}
</script>

以上代码中,需要替换掉APP_ID、APP_PRIVATE_KEY等参数为自己的支付宝应用信息。同时还需要引入JSEncrypt和CryptoJS库来进行签名算法的计算。在使用前需要先安装这两个库:

npm install jsencrypt crypto-js

在以上代码中,将支付宝支付所需的参数拼接成URL,然后将URL作为iframe的src属性值展示出来,用户点击支付后即可在支付页面完成支付

支付宝的pc端支付全流程的java开发代码及vue30的前端开发代码具体怎么写

原文地址: https://www.cveoy.top/t/topic/d2ru 著作权归作者所有。请勿转载和采集!

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