打印发票并重定向回 JSF 页面中的页面

Question

我使用 JSF 创建了这个简单的 PayPal 快速结账示例：

xhtml：

<h:form target="_blank">
    <h:commandButton value="paypal" action="#{pricingCalculator.initPayPal}" image="https://www.sandbox.paypal.com/en_US/i/btn/btn_buynowCC_LG.gif"/>
</h:form>

Java 代码：

public void initPayPal() throws SSLConfigurationException, InvalidCredentialException, IOException, HttpErrorException, InvalidResponseDataException, ClientActionRequiredException, MissingCredentialException, InterruptedException, OAuthException, ParserConfigurationException, com.paypal.exception.SSLConfigurationException, com.paypal.exception.InvalidCredentialException, com.paypal.exception.HttpErrorException, com.paypal.exception.InvalidResponseDataException, com.paypal.exception.ClientActionRequiredException, com.paypal.exception.MissingCredentialException, com.paypal.sdk.exceptions.OAuthException, org.xml.sax.SAXException
    {
        PaymentDetailsType paymentDetails = new PaymentDetailsType();
        paymentDetails.setPaymentAction(PaymentActionCodeType.fromValue("Sale"));
        PaymentDetailsItemType item = new PaymentDetailsItemType();
        BasicAmountType amt = new BasicAmountType();
        amt.setCurrencyID(CurrencyCodeType.fromValue("USD"));
        double itemAmount = 1.00;
        amt.setValue(String.valueOf(itemAmount));
        int itemQuantity = 1;
        item.setQuantity(itemQuantity);
        item.setName("item");
        item.setAmount(amt);

        List<PaymentDetailsItemType> lineItems = new ArrayList<PaymentDetailsItemType>();
        lineItems.add(item);
        paymentDetails.setPaymentDetailsItem(lineItems);
        BasicAmountType orderTotal = new BasicAmountType();
        orderTotal.setCurrencyID(CurrencyCodeType.fromValue("USD"));
        orderTotal.setValue(String.valueOf(itemAmount * itemQuantity));
        paymentDetails.setOrderTotal(orderTotal);
        List<PaymentDetailsType> paymentDetailsList = new ArrayList<PaymentDetailsType>();
        paymentDetailsList.add(paymentDetails);

        SetExpressCheckoutRequestDetailsType setExpressCheckoutRequestDetails = new SetExpressCheckoutRequestDetailsType();
        setExpressCheckoutRequestDetails.setReturnURL("http://devtools-paypal.com/guide/expresscheckout/java?success=true");
        setExpressCheckoutRequestDetails.setCancelURL("http://devtools-paypal.com/guide/expresscheckout/java?cancel=true");

        setExpressCheckoutRequestDetails.setPaymentDetails(paymentDetailsList);

        SetExpressCheckoutRequestType setExpressCheckoutRequest = new SetExpressCheckoutRequestType(setExpressCheckoutRequestDetails);
        setExpressCheckoutRequest.setVersion("104.0");

        SetExpressCheckoutReq setExpressCheckoutReq = new SetExpressCheckoutReq();
        setExpressCheckoutReq.setSetExpressCheckoutRequest(setExpressCheckoutRequest);

        Map<String, String> sdkConfig = new HashMap<String, String>();
        sdkConfig.put("mode", "sandbox");
        sdkConfig.put("acct1.UserName", "peter.penzov_api1.gmail.com");
        sdkConfig.put("acct1.Password", "5LQB5QHQJVKP9QKN");
        sdkConfig.put("acct1.Signature", "AFcWxV21C7fd0v3bYYYRCpSSRl31A6JqBNQNOE3.Jwxfs7nIV1jR7qcl");
        PayPalAPIInterfaceServiceService service = new PayPalAPIInterfaceServiceService(sdkConfig);
        SetExpressCheckoutResponseType setExpressCheckoutResponse = service.setExpressCheckout(setExpressCheckoutReq);

        String token = setExpressCheckoutResponse.getToken();

        String link = "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=" + token;

        ExternalContext externalContext = FacesContext.getCurrentInstance().getExternalContext();
        externalContext.redirect(link);
    }

我可以成功付款，但是当我点击付款按钮时，我被重定向到http://devtools-paypal.com/guide/expresscheckout/java?success=true 我想打印 Paypal 发票？我需要添加什么 Java 代码？

在我成功付款后，我想被重定向回 JSF 页面，但使用旧数据。如何保存旧数据？也许我必须使用会话范围 bean？

Answer 1

在 SetExpressCheckout 中，只需将返回 URL 更改为您自己的返回 URL 即可。