Vollständiges Beispiel für PayPal Java SDK – Wie rufe ich die PayPal-Autorisierungs-REST-API mit dem Java-Client auf?
Veröffentlicht: 2019-03-18
PayPal ist einer der besten Online- Payment auf dem Markt. Es besteht kein Zweifel, dass es von Tag zu Tag mit verrückten Zahlen wächst.
Ich persönlich habe praktische Erfahrung mit PayPal Java Developer APIs und möchte meine Erfahrungen mit allen meinen Crunchify-Lesern teilen.
In diesem Tutorial verwenden wir die neueste Version des PayPal Java SDK, 1.14.0 .
Hier ist eine Maven-Abhängigkeit, die Sie Ihrem Java-Eclipse-Projekt hinzufügen können.
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< dependency > < groupId > com . paypal . sdk < / groupId > < artifactId > rest - api - sdk < / artifactId > < version > LATEST < / version > < / dependency > |
Sobald Sie die obigen PayPal-Maven-Abhängigkeiten zu Ihrem Java-Projekt hinzugefügt haben, werden Sie es auf Ihrem Laptop/Desktop sehen.

Ziel dieses Tutorials
- Mit der PayPal-API können Sie das
put holdIhres Kunden sperren - Auf die gleiche Weise können Sie sofort
capture moneyfür Ihren Einkauf sammeln - Sie
refundIhren Kunden über API zurückerstatten -
void any holdSie auch alle Sperrungen auf, die Sie zuvor auf Ihrem Konto vorgenommen haben - Es gibt einfache Schritte, mit denen Sie alle oben genannten Vorgänge ausführen können, und genau das werden wir in diesem Tutorial tun. Hauptsächlich werden wir HOLD auf das Konto des Kunden setzen.
Was brauche ich?
Sie benötigen ein PayPal-Konto. Befolgen Sie die folgenden Schritte:
- Erstellen Sie ein
official PayPalKonto - Melden Sie sich über diesen Link beim Entwicklerportal von PayPal an: https://developer.paypal.com/developer/applications
- Erstellen Sie eine neue App mit diesem Link: https://developer.paypal.com/developer/applications/create
- Holen Sie
ClientIDundClientSecret, die wir in unserem Programm benötigen, umpaypalContextzu generieren.

Sobald Sie ClientID und ClientSecret haben, beginnen Sie als Nächstes mit dem Schreiben des Java-Programms crunchifyCapturePayPalAPI.java
Hier ist eine vollständige Logik für dieses Programm:
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Payer-Objekt erstellen und PaymentMethod festlegen - Legen Sie
RedirectUrlsfest und legen Sie cancelURL und returnURL fest - Legen Sie
Detailsfest und fügen Sie Zahlungsdetails hinzu -
Amount -
Transaction - Fügen Sie Zahlungsdetails hinzu und legen Sie die
authorizefest - Erstellen Sie APIContext, indem Sie
clientID,clientSecretundmodeübergeben - Erstellen Sie ein
Paymentund erhalten Sie eine Zahlungs-ID - Setzen
payerIDauf das PaymentExecution-Objekt -
Execute Paymentund erhalten Sie die Autorisierung
Vollständiger Code:
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package crunchify . com . paypal . sdk ; import java . util . ArrayList ; import java . util . List ; import com . paypal . api . payments . Amount ; import com . paypal . api . payments . Authorization ; import com . paypal . api . payments . Details ; import com . paypal . api . payments . Links ; import com . paypal . api . payments . Payer ; import com . paypal . api . payments . Payment ; import com . paypal . api . payments . PaymentExecution ; import com . paypal . api . payments . RedirectUrls ; import com . paypal . api . payments . Transaction ; import com . paypal . base . rest . APIContext ; import com . paypal . base . rest . PayPalRESTException ; /** * @author Crunchify.com * Version: 1.1.0 * */ public class CrunchifyPayPalSDKTutorial { private static String crunchifyID = "<!---- Add your clientID Key here ---->" ; private static String crunchifySecret = "<!---- Add your clientSecret Key here ---->" ; private static String executionMode = "sandbox" ; // sandbox or production public static void main ( String args [ ] ) { CrunchifyPayPalSDKTutorial crunchifyObj = new CrunchifyPayPalSDKTutorial ( ) ; // How to capture PayPal Payment using Java SDK? doCapture() PayPal SDK call. crunchifyObj . crunchifyCapturePayPalAPI ( ) ; } // This is simple API call which will capture a specified amount for any given // Payer or User public void crunchifyCapturePayPalAPI ( ) { /* * Flow would look like this: * 1. Create Payer object and set PaymentMethod * 2. Set RedirectUrls and set cancelURL and returnURL * 3. Set Details and Add PaymentDetails * 4. Set Amount * 5. Set Transaction * 6. Add Payment Details and set Intent to "authorize" * 7. Create APIContext by passing the clientID, secret and mode * 8. Create Payment object and get paymentID * 9. Set payerID to PaymentExecution object * 10. Execute Payment and get Authorization * */ Payer crunchifyPayer = new Payer ( ) ; crunchifyPayer . setPaymentMethod ( "paypal" ) ; // Redirect URLs RedirectUrls crunchifyRedirectUrls = new RedirectUrls ( ) ; crunchifyRedirectUrls . setCancelUrl ( "http://localhost:3000/crunchifyCancel" ) ; crunchifyRedirectUrls . setReturnUrl ( "http://localhost:3000/crunchifyReturn" ) ; // Set Payment Details Object Details crunchifyDetails = new Details ( ) ; crunchifyDetails . setShipping ( "2.22" ) ; crunchifyDetails . setSubtotal ( "3.33" ) ; crunchifyDetails . setTax ( "1.11" ) ; // Set Payment amount Amount crunchifyAmount = new Amount ( ) ; crunchifyAmount . setCurrency ( "USD" ) ; crunchifyAmount . setTotal ( "6.66" ) ; crunchifyAmount . setDetails ( crunchifyDetails ) ; // Set Transaction information Transaction crunchifyTransaction = new Transaction ( ) ; crunchifyTransaction . setAmount ( crunchifyAmount ) ; crunchifyTransaction . setDescription ( "Crunchify Tutorial: How to Invoke PayPal REST API using Java Client?" ) ; List < Transaction > crunchifyTransactions = new ArrayList < Transaction > ( ) ; crunchifyTransactions . add ( crunchifyTransaction ) ; // Add Payment details Payment crunchifyPayment = new Payment ( ) ; // Set Payment intent to authorize crunchifyPayment . setIntent ( "authorize" ) ; crunchifyPayment . setPayer ( crunchifyPayer ) ; crunchifyPayment . setTransactions ( crunchifyTransactions ) ; crunchifyPayment . setRedirectUrls ( crunchifyRedirectUrls ) ; // Pass the clientID, secret and mode. The easiest, and most widely used option. APIContext crunchifyapiContext = new APIContext ( crunchifyID , crunchifySecret , executionMode ) ; try { Payment myPayment = crunchifyPayment . create ( crunchifyapiContext ) ; System . out . println ( "createdPayment Obejct Details ==> " + myPayment . toString ( ) ) ; // Identifier of the payment resource created crunchifyPayment . setId ( myPayment . getId ( ) ) ; PaymentExecution crunchifyPaymentExecution = new PaymentExecution ( ) ; // Set your PayerID. The ID of the Payer, passed in the `return_url` by PayPal. crunchifyPaymentExecution . setPayerId ( "<!---- Add your PayerID here ---->" ) ; // This call will fail as user has to access Payment on UI. Programmatically // there is no way you can get Payer's consent. Payment createdAuthPayment = crunchifyPayment . execute ( crunchifyapiContext , crunchifyPaymentExecution ) ; // Transactional details including the amount and item details. Authorization crunchifyAuthorization = createdAuthPayment . getTransactions ( ) . get ( 0 ) . getRelatedResources ( ) . get ( 0 ) . getAuthorization ( ) ; log ( "Here is your Authorization ID" + crunchifyAuthorization . getId ( ) ) ; } catch ( PayPalRESTException e ) { // The "standard" error output stream. This stream is already open and ready to // accept output data. System . err . println ( e . getDetails ( ) ) ; } } private void log ( String string ) { System . out . println ( string ) ; } } |
Ausgabe der Eclipse-Konsole:
Standardmäßig aktiviert das PayPal-SDK den DEBUG-Modus und protokolliert daher jede einzelne Anfrage und Antwort an die Eclipse-Konsole.
Für detaillierte Informationen habe ich den DEBUG-Modus aktiviert und das detaillierte Ergebnis unseres getAuthorization-Aufrufs hier bereitgestellt.
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13 : 22 : 28.013 [ main ] DEBUG com . paypal . base . ConfigManager - sdk_config . properties not present . Skipping . . . 13 : 22 : 28.212 [ main ] DEBUG com . paypal . base . rest . OAuthTokenCredential - request header : { Authorization = Basic QVNuZG9aaEdGOEg1MFFQSWw5TGl0elhwSDVYTW16YlBwZmxJREFJOGVjUWVwdlJyWVQ4UnBfZUpNQmh1dHJVUHdaZU9CVGJUOE1GRksdfgsdfgsdfg3Q1ZLd0NzZTllRnBIZTNNNWpOR1liNHVxZ3BrNDNFVmFXR2hHNXR2Tk1na1IyZkZMUWdTUmRFY3Q3cG8 = , Accept = application / json , User - Agent = PayPalSDK / PayPal - Java - SDK 1.14.0 ( v = 11 ; vendor = Oracle Corporation ; bit = 64 ; os = Mac_OS_X 10.14.1 ) , Content - Type = application / x - www - form - urlencoded } 13 : 22 : 28.212 [ main ] DEBUG com . paypal . base . rest . OAuthTokenCredential - request body : grant_type = client_credentials 13 : 22 : 28.213 [ main ] DEBUG com . paypal . base . HttpConnection - curl command : curl -- verbose -- request POST 'https://api.sandbox.paypal.com/v1/oauth2/token' \ -- header "Authorization:Basic QVNuZG9aaEdGOEg1MFFQSWw5TGl0elhwSDVYTW16YlBwZmxJREFJOGVjUasdfasdflITlhSZ0xVMGhiOHhpa0M3Q1ZLd0NzZTllRnBIZTNNNWpOR1liNHVxZ3BrNDNFVmFXR2hHNXR2Tk1na1IyZkZMUWdTUmRFY3Q3cG8=" \ -- header "Accept:application/json" \ -- header "User-Agent:PayPalSDK/PayPal-Java-SDK 1.14.0 (v=11; vendor=Oracle Corporation; bit=64; os=Mac_OS_X 10.14.1)" \ -- header "Content-Type:application/x-www-form-urlencoded" \ -- data 'grant_type=client_credentials' 13 : 22 : 28.810 [ main ] DEBUG com . paypal . base . rest . OAuthTokenCredential - response header : { paypal - debug - id = [ 961e2e4122ac1 ] , null = [ HTTP / 1.1 200 OK ] , Paypal - Debug - Id = [ 961e2e4122ac1 ] , Server = [ Apache ] , Connection = [ close ] , Vary = [ Authorization ] , Set - Cookie = [ X - PP - SILOVER = ; Expires = Thu , 01 Jan 1970 00 : 00 : 01 GMT , X - PP - SILOVER = name % 3DSANDBOX3.API.1 % 26silo_version % 3D1880 % 26app % 3Dapiplatformproxyserv % 26TIME % 3D4098358363 % 26HTTP_X_PP_AZ_LOCATOR % 3Dsandbox.slc ; Expires = Mon , 26 Nov 2018 19 : 52 : 28 GMT ; domain = . paypal . com ; path =/ ; Secure ; HttpOnly ] , HTTP_X_PP_AZ_LOCATOR = [ sandbox . slc ] , Content - Length = [ 876 ] , X - PAYPAL - TOKEN - SERVICE = [ IAAS ] , Date = [ Mon , 26 Nov 2018 19 : 22 : 28 GMT ] , Content - Type = [ application / json ] } 13 : 22 : 28.810 [ main ] DEBUG com . paypal . base . rest . OAuthTokenCredential - response : { "scope" : "https://api.paypal.com/v1/payments/.* https://uri.paypal.com/services/payments/refund https://uri.paypal.com/services/applications/webhooks https://uri.paypal.com/services/payments/payment/authcapture https://uri.paypal.com/payments/payouts https://api.paypal.com/v1/vault/credit-card/.* https://uri.paypal.com/services/disputes/read-seller https://uri.paypal.com/services/subscriptions https://uri.paypal.com/services/disputes/read-buyer https://api.paypal.com/v1/vault/credit-card openid https://uri.paypal.com/services/disputes/update-seller https://uri.paypal.com/services/payments/realtimepayment" , "nonce" : "2018-11-26T19:03:03ZymZQ8MNE2MarndZEjUoxwB70puoxUA-NXqc7pUVtVxk" , "access_token" : "A21AAGyWgsdafxUM_1FCE5d9adsfuwfiOB7_4XkX3wKHWXe3nkKgt2bhadflirJsMWP9JAm-pBT2DtUJ5W0A" , "token_type" : "Bearer" , "app_id" : "APP-80W284ads543T" , "expires_in" : 31235 } 13 : 22 : 28.817 [ main ] DEBUG com . paypal . base . rest . PayPalResource - request header : { Authorization = Bearer A21AAGyWgsdafxUM_1FCE5d9adsfuwfiOB7_4XkX3wKHWXe3nkKgt2bhadflirJsMWP9JAm - pBT2DtUJ5W0A , User - Agent = PayPalSDK / ( v = 11 ; vendor = Oracle Corporation ; bit = 64 ; os = Mac_OS_X 10.14.1 ) , PayPal - Request - Id = 74886e72 - 34e4 - 4a0 - 8cd7 - 6adsf63b5dc9 , Accept = application / json , Content - Type = application / json } 13 : 22 : 28.817 [ main ] DEBUG com . paypal . base . rest . PayPalResource - request body : { "intent" : "sale" , "payer" : { "payment_method" : "paypal" } , "transactions" : [ { "amount" : { "currency" : "USD" , "total" : "6.66" , "details" : { "subtotal" : "3.33" , "shipping" : "2.22" , "tax" : "1.11" } } , "description" : "Crunchify Tutorial: How to Invoke PayPal REST API using Java Client?" } ] , "redirect_urls" : { "return_url" : "http://localhost:3000/crunchifyReturn" , "cancel_url" : "http://localhost:3000/crunchifyCancel" } } 13 : 22 : 28.818 [ main ] DEBUG com . paypal . base . HttpConnection - curl command : curl -- verbose -- request POST 'https://api.sandbox.paypal.com/v1/payments/payment' \ -- header "Authorization:Bearer A21AAGyWgsdafxUM_1FCE5d9adsfuwfiOB7_4XkX3wKHWXe3nkKgt2bhadflirJsMWP9JAm-pBT2DtUJ5W0A" \ -- header "User-Agent:PayPalSDK/ (v=11; vendor=Oracle Corporation; bit=64; os=Mac_OS_X 10.14.1)" \ -- header "PayPal-Request-Id:74886e72-34e4-4a70-8cd7-605cd63b5dc9" \ -- header "Accept:application/json" \ -- header "Content-Type:application/json" \ -- data '{ "intent": "sale", "payer": { "payment_method": "paypal" }, "transactions": [ { "amount": { "currency": "USD", "total": "6.66", "details": { "subtotal": "3.33", "shipping": "2.22", "tax": "1.11" } }, "description": "Crunchify Tutorial: How to Invoke PayPal REST API using Java Client?" } ], "redirect_urls": { "return_url": "http://localhost:3000/crunchifyReturn", "cancel_url": "http://localhost:3000/crunchifyCancel" } }' 13 : 22 : 33.407 [ main ] DEBUG com . paypal . base . rest . PayPalResource - response : { "id" : "PAY-25A74012S3552184CLP6EP6A" , "intent" : "sale" , "state" : "created" , "payer" : { "payment_method" : "paypal" } , "transactions" : [ { "amount" : { "total" : "6.66" , "currency" : "USD" , "details" : { "subtotal" : "3.33" , "tax" : "1.11" , "shipping" : "2.22" } } , "description" : "Crunchify Tutorial: How to Invoke PayPal REST API using Java Client?" , "related_resources" : [ ] } ] , "create_time" : "2018-11-26T19:22:32Z" , "links" : [ { "href" : "https://api.sandbox.paypal.com/v1/payments/payment/PAY-25A74012S3552184CLP6EP6A" , "rel" : "self" , "method" : "GET" } , { "href" : "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=EC-9C691969F1033220V" , "rel" : "approval_url" , "method" : "REDIRECT" } , { "href" : "https://api.sandbox.paypal.com/v1/payments/payment/PAY-25A74012S3552184CLP6EP6A/execute" , "rel" : "execute" , "method" : "POST" } ] } createdPayment Obejct Details == > { "id" : "PAY-25A74012S3552184CLP6EP6A" , "intent" : "sale" , "payer" : { "payment_method" : "paypal" } , "transactions" : [ { "related_resources" : [ ] , "amount" : { "currency" : "USD" , "total" : "6.66" , "details" : { "subtotal" : "3.33" , "shipping" : "2.22" , "tax" : "1.11" } } , "description" : "How to Invoke PayPal REST API using Java Client?" } ] , "state" : "created" , "create_time" : "2018-11-26T19:22:32Z" , "links" : [ { "href" : "https://api.sandbox.paypal.com/v1/payments/payment/PAY-25A74012S3552184CLP6EP6A" , "rel" : "self" , "method" : "GET" } , { "href" : "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd\u003d_express-checkout\u0026token\u003dEC-9C691969F1033220V" , "rel" : "approval_url" , "method" : "REDIRECT" } , { "href" : "https://api.sandbox.paypal.com/v1/payments/payment/PAY-25A74012S3552184CLP6EP6A/execute" , "rel" : "execute" , "method" : "POST" } ] } 13 : 22 : 33.414 [ main ] DEBUG com . paypal . base . rest . PayPalResource - request header : { Authorization = Bearer A21AAGyWgkMoxUM_1FCE5d948J5SAxIuwfiOB7_4XkX3wKHWXe3nkKgt2bhtXISnazHlE9yzlirJsMWP9JAm - pBT2DtUJ5W0A , User - Agent = PayPalSDK / ( v = 11 ; vendor = Oracle Corporation ; bit = 64 ; os = Mac_OS_X 10.14.1 ) , PayPal - Request - Id = e47412c8 - 2c1f - 4505 - b1a3 - 7b4723eb99f4 , Accept = application / json , Content - Type = application / json } 13 : 22 : 33.415 [ main ] DEBUG com . paypal . base . rest . PayPalResource - request body : { "payer_id" : "1Z232AMNN" } 13 : 22 : 33.415 [ main ] DEBUG com . paypal . base . HttpConnection - curl command : curl -- verbose -- request POST 'https://api.sandbox.paypal.com/v1/payments/payment/PAY-25A74012S3552184CLP6EP6A/execute' \ -- header "Authorization:Bearer A21AAGyWgsdafxUM_1FCE5d9adsfuwfiOB7_4XkX3wKHWXe3nkKgt2bhadflirJsMWP9JAm-pBT2DtUJ5W0A" \ -- header "User-Agent:PayPalSDK/ (v=11; vendor=Oracle Corporation; bit=64; os=Mac_OS_X 10.14.1)" \ -- header "PayPal-Request-Id:eadf412c8-2c1f-4505-b1a3-7basdaf99f4" \ -- header "Accept:application/json" \ -- header "Content-Type:application/json" \ -- data '{ "payer_id": "1Z232AMNN" }' 13 : 22 : 34.016 [ main ] ERROR com . paypal . base . HttpConnection - Response code : 400 Error response : { "name" : "PAYMENT_NOT_APPROVED_FOR_EXECUTION" , "message" : "Payer has not approved payment" , "information_link" : "https://developer.paypal.com/docs/api/payments/#errors" , "debug_id" : "113d5208bf8d3" } name : PAYMENT_NOT_APPROVED_FOR_EXECUTION message : Payer has not approved payment details : null debug - id : 113d5208bf8d3 information - link : https : //developer.paypal.com/docs/api/payments/#errors |
Auf die gleiche Weise werde ich in den nächsten Tutorials weitere Einzelheiten how to capture money , zum refund money und zum void any authorization , die Sie auf dem Konto des Zahlers haben, bereitstellen.
