菜汪肖在路上 / 支付宝沙盒 · GitCode
在官网获得支付宝沙箱的账号：
支付宝开放平台 ()
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然后创建boot工程，导入支付宝的jar包：
<dependency><groupId>com.alipay.sdk</groupId><artifactId>alipay-sdk-java</artifactId><version>4.38.4.ALL</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.8.12</version></dependency>
分别是支付宝jar包
快速构建实体类工具
字符串转换json工具
配置商家的apid，唯一标识key啥的，以防把钱转别的地方去了
然后写controller：
package com.example.zfb.controller;import cn.hutool.json.JSONObject;import com.alipay.api.AlipayApiException;import com.alipay.api.AlipayClient;import com.alipay.api.DefaultAlipayClient;import com.alipay.api.internal.util.AlipaySignature;import com.alipay.api.request.AlipayTradePagePayRequest;import com.example.zfb.config.AliPayConfig;import com.example.zfb.entity.AliPay;import org.springframework.web.bind.annotation.GetMapping;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 javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.util.Date;import java.util.HashMap;import java.util.Map;// xjlugv6874@// 9428521.24 - 30 = 9428491.24 + 30 = 9428521.24@RestController@RequestMapping("/alipay")public class AliPayController {private static final String GATEWAY_URL = "https://openapi-sandbox./gateway.do";private static final String FORMAT = "JSON";private static final String CHARSET = "UTF-8";//签名方式private static final String SIGN_TYPE = "RSA2";@Resourceprivate AliPayConfig aliPayConfig;//服务器测试//http://162.14.112.7:8080/alipay/pay?subject=%E9%A6%99%E8%95%89&totalAmount=10.2&traceNo=100666//本地测试，无法回调//http://localhost:8080/alipay/pay?subject=香蕉&totalAmount=10.2&traceNo=100666@GetMapping("/pay") // &subject=xxx&traceNo=xxx&totalAmount=xxxpublic void pay(AliPay aliPay, HttpServletResponse httpResponse) throws Exception {// 1. 创建支付宝客户端AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL, aliPayConfig.getAppId(),aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET, aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);// 2. 将金额、单号啥的设置好AlipayTradePagePayRequest request = new AlipayTradePagePayRequest(); // 发送请求的 Request类request.setNotifyUrl(aliPayConfig.getUrl());JSONObject bizContent = new JSONObject();bizContent.set("out_trade_no", aliPay.getTraceNo()); // 我们自己生成的订单编号bizContent.set("total_amount", aliPay.getTotalAmount()); // 订单的总金额bizContent.set("subject", aliPay.getSubject()); // 支付的名称bizContent.set("product_code", "FAST_INSTANT_TRADE_PAY"); // 固定配置request.setBizContent(bizContent.toString());// 创建支付页面String form = "";try {form = alipayClient.pageExecute(request).getBody(); // 调用SDK生成表单} catch (AlipayApiException e) {e.printStackTrace();}//直接写在当前页面，也可以当做参数返回给前端，让前端自己渲染httpResponse.setContentType("text/html;charset=" + CHARSET);httpResponse.getWriter().write(form);// 直接将完整的表单html输出到页面httpResponse.getWriter().flush();httpResponse.getWriter().close();}//支付成功后，支付宝会调用这个接口，告诉我们支付情况@PostMapping("/notify")public String payNotify(HttpServletRequest request) throws Exception {if (request.getParameter("trade_status").equals("TRADE_SUCCESS")) {System.out.println("=========支付宝异步回调========");Map<String, String> params = new HashMap<>();Map<String, String[]> requestParams = request.getParameterMap();for (String name : requestParams.keySet()) {params.put(name, request.getParameter(name));}String outTradeNo = params.get("out_trade_no");String gmtPayment = params.get("gmt_payment");String alipayTradeNo = params.get("trade_no");String sign = params.get("sign");String content = AlipaySignature.getSignCheckContentV1(params);boolean checkSignature = AlipaySignature.rsa256CheckContent(content, sign, aliPayConfig.getAlipayPublicKey(), "UTF-8"); // 验证签名// 支付宝验签if (checkSignature) {// 验签通过System.out.println("交易名称: " + params.get("subject"));System.out.println("交易状态: " + params.get("trade_status"));System.out.println("支付宝交易凭证号: " + params.get("trade_no"));System.out.println("商户订单号: " + params.get("out_trade_no"));System.out.println("交易金额: " + params.get("total_amount"));System.out.println("买家在支付宝唯一id: " + params.get("buyer_id"));System.out.println("买家付款时间: " + params.get("gmt_payment"));System.out.println("买家付款金额: " + params.get("buyer_pay_amount"));}}return "success";}}
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