SpringBoot+VUE3前后端分离-【支付宝支付】

创建 springboot就不在这里赘述，在开发支付宝支付功能中需要引入的maven 依赖如下

<dependency&gt;
    <groupId&gt;com.alipay.sdk</groupId&gt;
    <artifactId&gt;alipay-easysdk</artifactId&gt;
    <version&gt;2.2.3</version&gt;
</dependency&gt;

以上依赖为编写时最新依赖，若开发时需要用到当时最新依赖请到maven 查询
 https://mvnrepository.com/artifact/com.alipay.sdk/alipay-easysdk

4、后端代码

后端结构如下
在这里插入图片描述

1）yml文件 配置

alipay:
  # 应用ID，沙箱应用id
  appId: XXXXX
  # 应用私钥
  appPrivateKey: XXXX
  # 支付宝公钥
  alipayPublicKey: XXXXX
  # 异步回调地址，当前dome中并未使用
  notifyUrl:

2) config引入

import com.alipay.easysdk.factory.Factory;
import com.alipay.easysdk.kernel.Config;
import jakarta.annotation.PostConstruct;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

/**
 * @author <a href="https://github.com/fawu-K">fawu.K</a>
 * @since 2023-11-20 17:40
 **/

@Data
@Component
@ConfigurationProperties(prefix = "alipay")
public class AliPayConfig {
    private String appId;
    private String appPrivateKey;
    private String alipayPublicKey;
    private String notifyUrl;

    @PostConstruct
    public void init() {
        // 设置参数（全局只需设置一次）
        Config config = new Config();
        config.protocol = "https";
        // 沙箱网关
        config.gatewayHost = "openapi-sandbox.dl.alipaydev.com";
        config.signType = "RSA2";
        config.appId = this.appId;
        config.merchantPrivateKey = this.appPrivateKey;
        config.alipayPublicKey = this.alipayPublicKey;
        config.notifyUrl = this.notifyUrl;
        Factory.setOptions(config);
        System.out.println("=======支付宝SDK初始化成功=======");
    }
}

3）service层处理

import com.alipay.easysdk.factory.Factory;
import com.alipay.easysdk.kernel.util.ResponseChecker;
import com.alipay.easysdk.payment.page.models.AlipayTradePagePayResponse;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;

/**
 * @author <a href="https://github.com/fawu-K">fawu.K</a>
 * @since 2023-11-20 17:40
 **/

@Service
public class AlipayService {

    /**
     * 生成支付表单
     * @param subject
     * @param money
     * @return
     * @throws Exception
     */
    public String toPay(String subject, BigDecimal money) throws Exception {
        // 最后一个参数是支付完成之后跳转到的界面, 一般为项目的首页
        AlipayTradePagePayResponse pay = Factory.Payment.Page().pay(subject, this.generateTradeNo(),
                String.valueOf(money), "http://localhost:8080");
        String payForm = null;
        if (ResponseChecker.success(pay)) {
            payForm = pay.getBody();
        }
        return payForm;
    }

    /**
     * 通过时间生成外部订单号 out_trade_no
     * @return
     */
    private String generateTradeNo() {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS");
        String tradeNo = LocalDateTime.now(ZoneOffset.of("+8")).format(formatter);
        return tradeNo;
    }
}

4）controller层

import com.kang.alipaydome.service.AlipayService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.math.BigDecimal;

/**
 * @author <a href="https://github.com/fawu-K">fawu.K</a>
 * @since 2023-11-20 17:40
 **/

@RestController
@RequestMapping
@CrossOrigin(origins = "*")
public class AliPayController {
    @Autowired
    private AlipayService alipayService;

    @GetMapping("/pay")
    public String toPay() throws Exception {
        String form = alipayService.toPay("苹果15", new BigDecimal("100.00"));
        return form;
    }
}

5、测试

访问：http://localhost:8080/pay
在这里插入图片描述
展示出如上页面即表示成功，此时通过沙箱账号里的买家账号支付即可，也可以使用沙箱工具中下载支付宝APP沙箱版扫码支付。

6、vue 代码 搭建

首先创建vue项目在此不赘述

1）vue3引入axios

npm install axios
创建 src/plugins/axiosInstance.js

import axios from 'axios'

const API = axios.create({
    baseURL: "http://localhost:8080",
    timeout: 30000
})

export default API

在main.js中引用axios

import { createApp } from 'vue'
import App from './App.vue'
import axios from "@/plugins/axiosInstance";

const app = createApp(App)

app.use(ElementPlus)
app.mount('#app')
app.config.globalProperties.$axios = axios

2）调用后端接口

<template>
  <button @click="buy">购买</button>
</template>

<script>
import API from "@/plugins/axiosInstance";
export default {
  data() {
    return {
      subject:'',
      money:null,
    }
  },
  methods:{
    buy(){
      API({
        url:'/pay',
        method: 'get'
      }).then((resp)=>{
        // 添加之前先删除一下，如果单页面，页面不刷新，添加进去的内容会一直保留在页面中，二次调用form表单会出错
        const divForm = document.getElementsByTagName("div");
        if (divForm.length) {
          document.body.removeChild(divForm[0]);
        }
        const div = document.createElement("div");
        div.innerHTML = resp.data; // 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();
      });
    }
  }
}
</script>