java paypal是什么，让我们一起了解一下？
paypal支付的IPN和PDT两种通知方式，IPN异步通知，可能会有时延，但可靠性高，当接入方主机不可达时，有重试机制保证IPN通知尽量抵达接入方服务器。接入方收到IPN通知后，需要对其确认。
接入方收到IPN通知后，需要对其确认。确认方法为，把接收到的IPN通知原封不动的作为请求体，调用IPN确认接口。PDT通知是是实时的，但可靠性不高，因为只会通知一次，没有重试机制，一旦接入方出现主机不可达，这样的消息将会被丢失。官方推荐，IPN通知和PDT通知最好混合使用，以满足时效性和可靠性的保证。我们采用了IPN和PDT两种通知机制。
paypal流程有如下几步：
1、创建应用程序
2、启用与palPal的连接
3、应用评论
4、构建按钮
5、获取授权码
6、获取访问令牌
7、为access_token交换refresh_token
8、获取客户信息
9、测试集成
10、上线
通过springboot环境，java如下：
@Controller
@RequestMapping("/paypal")
public class PaymentController {
private Logger log = LoggerFactory.getLogger(getClass());
@Autowired
private PaypalService paypalService;
// 回调地址
private static Integer orderId = null;
private static String SUCCESS_URL = "https://www.baidu.com";
private static String FAIL_URL = "http://www.163.com";
private static String CANCEL_URL = "https://www.autohome.com.cn/shenzhen/?pvareaid=1001299";
@RequestMapping(method = RequestMethod.GET)
public String index(){
return "index";
}
/**
* 订单支付
* @param
* @return
*/
@RequestMapping(method = RequestMethod.POST, value = "/payment")
public String payment(HttpServletRequest request, @RequestBody PaymentEx paymentEx){
if (null == paymentEx || null == paymentEx.getOrderId() || null == paymentEx.getOrderAddressEx() || null == paymentEx.getOrderItemExList()) {
return "redirect:" + FAIL_URL;
}
orderId = paymentEx.getOrderId();
SUCCESS_URL = paymentEx.getSuccessUrl();
FAIL_URL = paymentEx.getFailUrl();
CANCEL_URL = paymentEx.getCancelUrl();
// 调用本地 successPay方法
String successUrl = URLUtils.getBaseURl(request) + "/" + "paypal/successPay";
// 调用本地 cancel方法
String cancelUrl = URLUtils.getBaseURl(request) + "/" + "paypal/cancelPay";
try {
Payment payment = paypalService.createPayment(paymentEx, successUrl,cancelUrl);
for(Links links : payment.getLinks()){
if(links.getRel().equals("approval_url")){
// 客户付款登陆地址
return "redirect:" + links.getHref();
}
}
} catch (PayPalRESTException e) {
log.error(e.getMessage());
return "redirect:" + FAIL_URL;
}
return "redirect:" + FAIL_URL;
}
/**
* 取消支付
* @return
*/
@RequestMapping(method = RequestMethod.GET, value = "/cancelPay")
public String cancelPay(){
return "redirect:" + CANCEL_URL;
}
/**
* 支付成功
* @param paymentId
* @param payerId
* @return
*/
@RequestMapping(method = RequestMethod.GET, value = "/successPay")
public String successPay(@RequestParam("paymentId") String paymentId, @RequestParam("PayerID") String payerId){
try {
/**
* 支付
*/
Payment payment = paypalService.executePayment(paymentId, payerId);
/**
* 保存支付信息
*/
ShopOrderPayment orderPayment = new ShopOrderPayment();
orderPayment.setOrderId(orderId);
// 订单总价
String total = payment.getTransactions().get(0).getAmount().getTotal();
orderPayment.setAmountPaid(new BigDecimal(total));
// 交易号
String transationId = payment.getTransactions().get(0).getRelatedResources().get(0).getSale().getId();
orderPayment.setTransactionId(transationId);
paypalService.savePayment(orderPayment);
/**
* 支付成功重定向页面
*/
if(payment.getState().equals("approved")){
return "redirect:" + SUCCESS_URL;
}
} catch (PayPalRESTException e) {
log.error(e.getMessage());
return "redirect:" + FAIL_URL;
}
return "redirect:" + FAIL_URL;
}
}以上就是小编今天的分享了，希望可以帮助到大家。