java - 如何在 Spring JPA 应用程序中集成 paypal Rest api。错误代码 400

Question

根据提供的java SDK here ，我创建了一个新项目并尝试集成代码以进行 paypal api 调用。但是当我运行该应用程序时，它给我错误:-

Error code : 401 with response : Server returned HTTP response code: 401 for URL: https://api.sandbox.paypal.com/v1/payments/payment

这是我的 Controller 类

package com.main.controller;

public class PaymentController{ 

@RequestMapping(method = RequestMethod.POST, produces = "application/JSON")

public Payment getString(){

    InputStream is = PaymentController.class
            .getResourceAsStream("/sdk_config.properties");
    try {
        PayPalResource.initConfig(is);
        System.out.println("initiialization done");
    } catch (PayPalRESTException e) {
        System.out.println("Paypal Rest Exception : " + e.getMessage());
    }

    Map<String, String > map = new HashMap<String, String>();
    map.put("mode", "sandbox");
    String clientID = "AYDNebhrsuqiUKPU_ab-tCvGGVkzaxw2y4bIJFIl4rMuCW..........................";
    String clientSecret="ENgjkFRgy1yGhal0aobwdF8kLNglkDaDeDItLN-lgQJZV4W1FpNQ27g3FC...............";

    try {
        accessToken = new OAuthTokenCredential(clientID, clientSecret,map).getAccessToken();
    } catch (PayPalRESTException e) {
        // TODO Auto-generated catch block
        System.out.println("Cannot make the OAuthentication :" + e.getMessage());
    }

    Payment payment = createPayment();

    return payment;
}

public Payment createPayment(){

    Address billingAddress = new Address();
    billingAddress.setCity("Johnstown");
    billingAddress.setCountryCode("US");
    billingAddress.setLine1("52 N Main ST");
    billingAddress.setPostalCode("43210");
    billingAddress.setState("OH");

    CreditCard creditCard = new CreditCard();        
    creditCard.setBillingAddress(billingAddress);
    creditCard.setCvv2(111);
    creditCard.setExpireMonth(11);
    creditCard.setExpireYear(2018);
    creditCard.setFirstName("Joe");
    creditCard.setLastName("Shopper");
    creditCard.setNumber("5500005555555559");
    creditCard.setType("mastercard");

    Details details = new Details();
    details.setShipping("1");
    details.setSubtotal("5");
    details.setTax("1");

    Amount amount = new Amount();
    amount.setCurrency("USD");
    amount.setTotal("7");
    amount.setDetails(details);

    Transaction transaction = new Transaction();
    transaction.setAmount(amount);
    transaction
            .setDescription("This is the payment transaction description.");


    List<Transaction> transactions = new ArrayList<Transaction>();
    transactions.add(transaction);

    FundingInstrument fundingInstrument = new FundingInstrument();
    fundingInstrument.setCreditCard(creditCard);  


    List<FundingInstrument> fundingInstrumentList = new ArrayList<FundingInstrument>();
    fundingInstrumentList.add(fundingInstrument);

    Payer payer = new Payer();
    payer.setFundingInstruments(fundingInstrumentList);
    payer.setPaymentMethod("credit_card");

    Payment payment = new Payment();
    payment.setIntent("sale");
    payment.setPayer(payer);
    payment.setTransactions(transactions);
    Payment createdPayment = null;
    try {
        String accessToken = GenerateAccessToken.getAccessToken();

        String realAccessToken = "A101.kPIsO7eGXhg420XIjnZmPboCS27CeDF6TZjVfGR31f6ja1IotK3e6U-E_k9MwOO5.....";


        /*
         * String requestId = Long.toString(System.nanoTime(); APIContext
         * apiContext = new APIContext(accessToken, requestId ));
         */

        createdPayment = payment.create(apiContext);

        System.out.println("Created payment with id = " + createdPayment.getId()
        + " and status = " + createdPayment.getState());
    } catch (PayPalRESTException e) {
        System.out.println("Cannot make the payment from here: " + e.getMessage());
    }
    return createdPayment;
}

}

更新:-我已经添加了client_id和secret身份验证凭据，现在我得到的是400错误，即验证错误

Answer 1

401 未经授权。因此，首先您必须授权并创建授权 token 。 Here是如何创建第一个调用的示例。

Make a /token call using your application's OAuth keys for the basic authentication values (the keys are the values of your client_id and secret). In the request body, set grant_type to client_credentials. When you run the command, PayPal generates and returns a new access token.

将您的 token 添加到您要创建的付款中。

查看此示例中的这一行:https://github.com/paypal/PayPal-Java-SDK/blob/master/rest-api-sample/src/main/java/com/paypal/api/sample/FuturePaymentSample.java#L62

所以使用沙箱和类似的东西:

Map<String, String> configurationMap = new HashMap<String, String>();
            configurationMap.put("mode", "sandbox");
            APIContext apiContext = new APIContext();
            apiContext.setConfigurationMap(configurationMap);
            tokeninfo = Tokeninfo.createFromAuthorizationCodeForFpp(apiContext, params);
            tokeninfo.setAccessToken(tokeninfo.getTokenType() + " " + tokeninfo.getAccessToken());

之后您应该能够调用 tokeninfo.getAccessToken() 来创建付款。