1.开发前准备
1.1 支付宝沙盒配置
1.1.1 注册支付宝开发者账号，进入开发者控制台
https://openhome.alipay.com/platform/developerIndex.htm
1.1.2 沙盒入口
https://open.alipay.com/develop/sandbox/app
将上面的APPID、支付宝网关消息、应用密钥和支付宝公钥保管好，下面会使用到。
2 集成沙盒支付
2.1 再pom.xml文件中添加下面依赖
<dependency>
<groupId>com.alipay.sdk</groupId>
<artifactId>alipay-easysdk</artifactId>
<version>2.2.0</version>
</dependency>
<dependency>
<groupId>com.alipay.sdk</groupId>
<artifactId>alipay-sdk-java</artifactId>
<version>4.22.110.ALL</version>
</dependency>
2.2 在application.yml 里面进行配置:
alipay:
appId: APPID
appPrivateKey: 应用私钥
alipayPublicKey: 支付宝公钥
notifyUrl: 后面再填
2.3 创建AlipayConfig.java
import com.alipay.easysdk.factory.Factory;
import com.alipay.easysdk.kernel.Config;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
@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（全局只需要设置一次）
Config config = new Config();
config.protocol = "https";
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=====");
}
}
2.4 支付接口
2.4.1 新建一个AliPay.java
import lombok.Data;
@Data
public class AliPay {
private String traceNo;
private double totalAmount;
private String subject;
private String alipayTraceNo;
}
2.4.2 新建一个AliPayController.java
import cn.hutool.json.JSONObject;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.easysdk.factory.Factory;
import com.example.learnrabbitmq.config.AliPayConfig;
import com.example.learnrabbitmq.model.AliPay;
import org.springframework.transaction.annotation.Transactional;
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.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
/**
* Author: 刘春江
* Date: 2023/10/10 13:02
*/
@RestController
@RequestMapping("alipay")
@Transactional(rollbackFor = Exception.class)
public class AliPayController {
@Resource
AliPayConfig aliPayConfig;
private static final String GATEWAY_URL ="https://openapi-sandbox.dl.alipaydev.com/gateway.do";
private static final String FORMAT ="JSON";
private static final String CHARSET ="UTF-8";
private static final String SIGN_TYPE ="RSA2";
@GetMapping("pay")
public void pay(AliPay aliPay, HttpServletResponse httpResponse) throws IOException {
AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL, aliPayConfig.getAppId(),
aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET, aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);
// 2. 创建 Request并设置Request参数
AlipayTradePagePayRequest request = new AlipayTradePagePayRequest(); // 发送请求的 Request类
request.setNotifyUrl(aliPayConfig.getNotifyUrl());
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());
// 执行请求，拿到响应的结果，返回给浏览器
String form = "";
try {
form = alipayClient.pageExecute(request).getBody(); // 调用SDK生成表单
} catch (AlipayApiException e) {
e.printStackTrace();
}
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();
}
2.5 接口测试
测试的url格式:
http://localhost:你的端口/alipay/pay?subject=任意填&traceNo=任意填&totalAmount=填数字
age：http://localhost:8081/alipay/pay?subject=test&traceNo=666&totalAmount=1000
成功截图：
然后使用沙盒账号中的买家账号进行登录
成功界面：
2.6 回调接口
在AliPayController.java添加以下代码
@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));
// System.out.println(name + " = " + request.getParameter(name));
}
String tradeNo = params.get("out_trade_no");
String gmtPayment = params.get("gmt_payment");
String alipayTradeNo = params.get("trade_no");
// 支付宝验签
if (Factory.Payment.Common().verifyNotify(params)) {
// 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";
}
}
使用该接口必须在外网的条件下，这里作者使用内外穿透来实现。
内外穿透：https://natapp.cn/
观看该文档：https://natapp.cn/article/natapp_newbie
本地端口改为自己的端口。
得到地址之后在application.yml中的notifyUrl去添加。
再次调用pay接口，支付完成后后台会打印出以下内容。
