PayPal REST API - 沙盒为 API 请求返回 401 但访问令牌成功

Question

我在 Java 中使用 PayPal REST API 向测试（沙箱）服务器请求访问令牌，请求成功，然后将该访问令牌发送回相同的沙箱服务器以进行付款，但失败并返回 401 Not授权。

我按照此处找到的 PayPal REST API 说明进行操作：https://developer.paypal.com/webapps/developer/docs/api/#authentication--headers 和此处https://developer.paypal.com/webapps /developer/docs/integration/direct/make-your-first-call/

我尝试使用

OAuthTokenCredential

对象来提供我的

clientId

和

clientSecret

但它只返回访问令牌，而不是 PayPal 提供的

appID

或以分钟为单位的

expiresIn

时间。此外，它还抱怨我的类路径中缺少

sdk_conf.properties

文件。

然后我创建了自己的类来使用 Apache 的 HttpClient 进行调用以获得完整的响应并且有效：

RestEasy 的自定义 PayPalAPI 接口

@Path("v1/oauth2/token")
public interface PayPalOAuthAPI {
    @POST
    @Produces(MediaType.APPLICATION_JSON)
    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    public OAuthInfo requestAccessToken(
        @HeaderParam("Authorization") String basicEncodedToken, 
        String requestBody
    );
}

自定义 OAuth 令牌请求

private OAuthInfo getOAuthInfo() {
    OAuthInfo info = null;

    PayPalOAuthAPI client = HttpClientFactory.createRestEasyClient(80, 443, 120, 2,
                                          API_ENDPOINT, PayPalOAuthAPI.class, true);
    info = client.requestAccessToken("Basic "+
                                    generateBase64String(PP_API_USER, PP_API_SECRET),
                                    "grant_type=client_credentials");

    if (info == null) {
        throw new RuntimeException(APIResultCodes.REMOTE_UNAUTHORIZED, 
                                   "Could not authenticate with PayPal.");
    }
    return info;
}

这一切都正常工作，并返回 200 OK 状态和预期的 JSON 响应，包括访问令牌。

然后我获取该令牌并将其提供给我的

Payment

对象，该对象使用 PayPal 的代码与他们的服务器进行通信（在幕后我相信它是基本的 java.lang.net.HttpConnection 代码）并返回 401 Unauthorized.

使用 PayPal 的 REST API 进行支付调用

// get a new token
String accessToken = getOAuthInfo().getAccessToken();

// configProps is a Properties object pre-populated with sdk_conf.properties
// values except service.EndPoint, clientID, and clientSecret
configProps.setProperty("service.EndPoint", API_ENDPOINT);

// ... transaction objects omitted

try {
    Payment payment = new Payment();
    Payment.initConfig(configProps);
    payment.setIntent(Intent.sale.toString());
    payment.setPayer(payer);
    payment.setTransactions(transactions);

    Payment createdPayment = payment.create(accessToken);
} catch (PayPalRESTException ex) {
    LOG.error("Failed to submit donation", ex);
}

日志输出

（包括已编辑 ID 的 HttpClient 请求/响应）

2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.impl.conn.DefaultClientConnection Sending request: POST /v1/oauth2/token HTTP/1.1
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "POST /v1/oauth2/token HTTP/1.1[\r][\n]"
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "Content-Type: application/x-www-form-urlencoded[\r][\n]"
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "Accept: application/json[\r][\n]"
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "Authorization: Basic QWM1UmNoQ3g3dHB1bWZSZW9rcUR3MW41bHRXaktQU0xRODIyWUJWWXpEdXpZUGJuc0J0eDZYWGlqX1pROkVJVnQ5eERmM2JnQmw1OG5KYlZ2VmtSR3JCaVZVN1BIWGtSV01mQjVqb3NxRTNkbWxCcF9TV05BdU91eA==[\r][\n]"
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "Accept-Encoding: gzip, deflate[\r][\n]"
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "Content-Length: 29[\r][\n]"
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "Host: api.sandbox.paypal.com[\r][\n]"
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "Connection: Keep-Alive[\r][\n]"
2013-08-19 16:34:11,077 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "User-Agent: Apache-HttpClient/4.2 (java 1.5)[\r][\n]"
2013-08-19 16:34:11,078 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "[\r][\n]"
2013-08-19 16:34:11,078 [qtp1005310362-44] DEBUG:org.apache.http.wire >> "grant_type=client_credentials"
2013-08-19 16:34:12,690 [qtp1005310362-44] DEBUG:org.apache.http.wire << "HTTP/1.1 200 OK[\r][\n]"
2013-08-19 16:34:12,690 [qtp1005310362-44] DEBUG:org.apache.http.wire << "Server: Apache-Coyote/1.1[\r][\n]"
2013-08-19 16:34:12,690 [qtp1005310362-44] DEBUG:org.apache.http.wire << "Date: Mon, 19 Aug 2013 20:34:11 GMT[\r][\n]"
2013-08-19 16:34:12,690 [qtp1005310362-44] DEBUG:org.apache.http.wire << "PayPal-Debug-Id: d29c41eb8625a[\r][\n]"
2013-08-19 16:34:12,690 [qtp1005310362-44] DEBUG:org.apache.http.wire << "Content-Type: application/json[\r][\n]"
2013-08-19 16:34:12,690 [qtp1005310362-44] DEBUG:org.apache.http.wire << "Content-Length: 282[\r][\n]"
2013-08-19 16:34:12,690 [qtp1005310362-44] DEBUG:org.apache.http.wire << "[\r][\n]"
2013-08-19 16:34:12,690 [qtp1005310362-44]     2013-08-19 16:34:12,691 [qtp1005310362-44] DEBUG:org.apache.http.impl.client.DefaultHttpClient Connection can be kept alive indefinitely
2013-08-19 16:34:12,691 [qtp1005310362-44] DEBUG:org.apache.http.wire << "{"scope":"https://api.paypal.com/v1/payments/.* https://api.paypal.com/v1/vault/credit-card https://api.paypal.com/v1/vault/credit-card/.* openid","access_token":"RVATuLOQB0WFX
    keSDZQw4ZnyfIduPCF2j7sMhcfspwo","token_type":"Bearer","app_id":"APP-80W284285Q519543T","expires_in":28800}"
2013-08-19 16:34:12,693 [qtp1005310362-44] DEBUG:org.apache.http.impl.conn.PoolingClientConnectionManager Connection [id: 5][route: {s}->https://api.sandbox.paypal.com] can be kept alive indefinitely
2013-08-19 16:34:12,693 [qtp1005310362-44] DEBUG:org.apache.http.impl.conn.PoolingClientConnectionManager Connection released: [id: 5][route: {s}->https://api.sandbox.paypal.com][total kept alive: 1; route allocated: 1 of 2; total allocated: 1 of 2]
2013-08-19 16:34:15,197 [qtp1005310362-44] ERROR:com.example.gateways.paypal.payments.PayPalPaymentsProREST Failed to submit donation
    com.paypal.core.rest.PayPalRESTException: Error code : 401 with response : Server returned HTTP response code: 401 for URL: https://api.sandbox.paypal.com/v1/payments/payment

我注意到 API 发送给我的范围和 URL 是两个不同的东西。也许我缺少一些将 API 调用发送到沙箱 URL 的配置？

在我上面的代码中，您可以看到我将

service.EndPoint

设置为

API_ENDPOINT

，这在我的测试中设置为

https://api.sandbox.paypal.com

。我也没有在我的属性对象中提供

clientID

或

clientSecret

，但即使提供它们也会给我一个401.

我还想念什么？

Answer 1

在尝试为第三方 PayPal 帐户付款时遇到了这个问题并且遇到了类似的问题。

不确定你是否遇到了和我一样的事情，但我试图为我没有正确请求许可的第三方贝宝账户创建付款。原来我需要使用 Permissions API 来请求适当的权限。

查看此链接：https://developer.paypal.com/webapps/developer/docs/classic/permissions-service/integration-guide/PermissionsAbout/