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开源地址 paypal-demo: java 对接 paypal 的案例，下载项目，注册paypal账号，拿到秘钥，即可使用
效果图
准备环境
1、注册账号 PayPal外贸_外贸收款_为卖家定制的服务和支付方案 - PayPal中国（我这里注册的是个人账户）
2、注册paypal开发者账号 https://developer.paypal.com/home （用上一步的账号）
3、创建两个测试账号 https://developer.paypal.com/dashboard/accounts （两个账号分别是公司账号，个人账号，设置密码，金额等信息，不要用他默认的，否则卡出翔来）
4、创建的账号可以在这里来登录进去，查看金额、支付等信息
（https://www.sandbox.paypal.com/signin）
4、得到clientId和秘钥 (https://developer.paypal.com/dashboard/applications/sandbox)
代码部分
PayPalController
package com.japhet.paypaldemo.controller;
import com.japhet.paypaldemo.config.PaypalPaymentIntent;
import com.japhet.paypaldemo.config.PaypalPaymentMethod;
import com.paypal.api.payments.*;
import com.paypal.base.rest.APIContext;
import com.paypal.base.rest.PayPalRESTException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
@RestController
public class PayPalController {
private Logger log = LoggerFactory.getLogger(getClass());
@Autowired
private APIContext apiContext;
@Value("${pay.paypal.PAYPAL_SUCCESS_PAGE}")
private String PAYPAL_SUCCESS_PAGE;
@Value("${pay.paypal.PAYPAL_CANCEL_PAGE}")
private String PAYPAL_CANCEL_PAGE;
@Value("${pay.paypal.PAYPAL_SUCCESS_URL}")
private String PAYPAL_SUCCESS_URL;
@Value("${pay.paypal.PAYPAL_CANCEL_URL}")
private String PAYPAL_CANCEL_URL;
@PostMapping("/payPal")
public String toPay(){
//我这里写死了 1
BigDecimal payAmount = new BigDecimal(1);
try {
Payment payment = createPayment(
payAmount,
"USD",
PaypalPaymentMethod.paypal,
PaypalPaymentIntent.sale,
"购买商品信息~",
PAYPAL_CANCEL_URL,
PAYPAL_SUCCESS_URL);
log.info("=========================================");
log.info(payment.toString());
log.info("=========================================");
//保存paypal预支付信息
//修改订单金额 & 支付的流水号
log.info("支付金额："+payAmount);
log.info("订单号："+payment.getId());
for (Links links : payment.getLinks()) {
if (links.getRel().equals("approval_url")) {
return links.getHref();
}
}
} catch (PayPalRESTException e) {
//保存paypal预支付异常信息 .......
log.error(e.getMessage());
}
return "index";
}
/**
* PayPal 支付成功 回调
* @param response
* @param paymentId
* @param payerId
*/
@GetMapping("/callback/success")
public void successPay(HttpServletResponse response, @RequestParam("paymentId") String paymentId, @RequestParam("PayerID") String payerId) {
log.info("================================payPal 回调成功==================================="+paymentId);
log.info("================================payPal 回调成功==================================="+payerId);
try {
Payment payment = executePayment(paymentId,payerId);
log.info("================================payment===================================");
log.info(payment.toString());
log.info("================================payment===================================");
if (payment.getState().equals("approved")) {
//修改订单状态
response.sendRedirect(PAYPAL_SUCCESS_PAGE);
}else{
response.sendRedirect(PAYPAL_CANCEL_PAGE);
}
} catch (PayPalRESTException e) {
log.info("!!!!!!!!!!!!!!支付回调失败 异常!!!!!!!!!!!!!!");
log.error(e.getMessage());
log.info("!!!!!!!!!!!!!!支付回调失败 异常!!!!!!!!!!!!!!");
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* paypal 回调 取消支付
* @param response
* @throws IOException
*/
@GetMapping("/callback/cancel")
public void cancelPay(HttpServletResponse response) throws IOException {
log.info("================================payPal 取消支付===================================");
log.info("================================payPal 取消支付===================================");
response.sendRedirect(PAYPAL_CANCEL_PAGE);
}
@RequestMapping("/success")
public String success(){
return "success";
}
@RequestMapping("/cancel")
public String cancel(){
return "cancel";
}
/**
*
* @param total
* @param currency
* @param method
* @param intent
* @param description
* @param cancelUrl
* @param successUrl
* @return
* @throws PayPalRESTException
*/
public Payment createPayment(BigDecimal total, String currency, PaypalPaymentMethod method, PaypalPaymentIntent intent,
String description, String cancelUrl, String successUrl) throws PayPalRESTException {
Amount amount = new Amount();
amount.setCurrency(currency);
amount.setTotal(String.format("%.2f", total));
Transaction transaction = new Transaction();
transaction.setDescription(description);
transaction.setAmount(amount);
List<Transaction> transactions = new ArrayList<>();
transactions.add(transaction);
Payer payer = new Payer();
payer.setPaymentMethod(method.toString());
Payment payment = new Payment();
payment.setIntent(intent.toString());
payment.setPayer(payer);
payment.setTransactions(transactions);
RedirectUrls redirectUrls = new RedirectUrls();
redirectUrls.setCancelUrl(cancelUrl);
redirectUrls.setReturnUrl(successUrl);
payment.setRedirectUrls(redirectUrls);
return payment.create(apiContext);
}
/**
*
* @param paymentId
* @param payerId
* @return
* @throws PayPalRESTException
*/
public Payment executePayment(String paymentId, String payerId) throws PayPalRESTException {
Payment payment = new Payment();
payment.setId(paymentId);
PaymentExecution paymentExecute = new PaymentExecution();
paymentExecute.setPayerId(payerId);
return payment.execute(apiContext, paymentExecute);
}
}
ok，大功告成
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2023-07-28 10:15:00更新 ~~~~
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--------------------------------------------------------------------------------
2023-10-09 16:20:00更新 ~~~~
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