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Mit JSON-Webtokens (JWT) arbeiten

JSON Web Tokens sind ein gängiger Branchenstandard für die sichere Übertragung von Informationen als JSON-Objekt. Wenn du die Google Wallet API verwendest, codieren Sie die Details des Karten-/Ticketobjekts, das Sie zum Erstellen einer Karten-/Ticketinstanz im JWT-Format (ausgesprochen „jot“) verwenden möchten, und senden dieses JWT dann in einer Anfrage an die Google Wallet API.

JWTs werden sicher aufbewahrt, indem sie mit einem gemeinsamen Secret signiert werden, bevor sie an die Google Wallet API gesendet werden. Wenn du die Google Wallet REST API verwendest, ist das Signatur-Secret dein Google Cloud-Dienstkontoschlüssel. Wenn Sie das Google Wallet Android SDK verwenden, ist das Signatur-Secret der SHA-1-Fingerabdruck für Ihre Android-App.

Karte/Ticket in einem JWT codieren

Wenn das GenericObject erstellt wird, musst du es mit einem unsignierten JWT mit dem Attribut payload.GenericObjects versehen, wie im folgenden Snippet gezeigt:

JSON

{
  "iss": "OWNER_EMAIL_ADDRESS",
  "aud": "google",
  "typ": "savetowallet",
  "iat": "UNIX_TIME",
  "origins": [],
  "payload": {
      "genericObjects": [ NEW_OBJECT ]
  }
}

Weitere Informationen zum erwarteten Format von JWTs findest du in der JWT-Referenz.

JWT signieren

Web, E-Mail und SMS

Das JWT muss mit dem Dienstkontoschlüssel signiert werden, der mit dem Google Cloud-Dienstkonto verknüpft ist, das Sie in der Google Wallet Business Console autorisiert haben. Die Google Wallet API validiert diese Anforderungen durch Verifizierung der JWT-Signatur.

Durch das Signieren des JWT wird ein Token erzeugt, mit dem dann ein „Zu Google Wallet hinzufügen“ erstellt werden kann. Link, über den die Karte bzw. das Ticket an einen Nutzer ausgestellt werden kann:

Java

Um Ihre Integration in Java zu starten, lesen Sie unsere vollständige <ph type="x-smartling-placeholder"></ph> Codebeispiele auf GitHub

/**
 * Generate a signed JWT that creates a new pass class and object.
 *
 * <p>When the user opens the "Add to Google Wallet" URL and saves the pass to their wallet, the
 * pass class and object defined in the JWT are created. This allows you to create multiple pass
 * classes and objects in one API call when the user saves the pass to their wallet.
 *
 * @param issuerId The issuer ID being used for this request.
 * @param classSuffix Developer-defined unique ID for this pass class.
 * @param objectSuffix Developer-defined unique ID for the pass object.
 * @return An "Add to Google Wallet" link.
 */
public String createJWTNewObjects(String issuerId, String classSuffix, String objectSuffix) {
  // See link below for more information on required properties
  // https://developers.google.com/wallet/generic/rest/v1/genericclass
  GenericClass newClass = new GenericClass().setId(String.format("%s.%s", issuerId, classSuffix));

  // See link below for more information on required properties
  // https://developers.google.com/wallet/generic/rest/v1/genericobject
  GenericObject newObject =
      new GenericObject()
          .setId(String.format("%s.%s", issuerId, objectSuffix))
          .setClassId(String.format("%s.%s", issuerId, classSuffix))
          .setState("ACTIVE")
          .setHeroImage(
              new Image()
                  .setSourceUri(
                      new ImageUri()
                          .setUri(
                              "https://farm4.staticflickr.com/3723/11177041115_6e6a3b6f49_o.jpg"))
                  .setContentDescription(
                      new LocalizedString()
                          .setDefaultValue(
                              new TranslatedString()
                                  .setLanguage("en-US")
                                  .setValue("Hero image description"))))
          .setTextModulesData(
                  List.of(
                          new TextModuleData()
                                  .setHeader("Text module header")
                                  .setBody("Text module body")
                                  .setId("TEXT_MODULE_ID")))
          .setLinksModuleData(
              new LinksModuleData()
                  .setUris(
                      Arrays.asList(
                          new Uri()
                              .setUri("http://maps.google.com/")
                              .setDescription("Link module URI description")
                              .setId("LINK_MODULE_URI_ID"),
                          new Uri()
                              .setUri("tel:6505555555")
                              .setDescription("Link module tel description")
                              .setId("LINK_MODULE_TEL_ID"))))
          .setImageModulesData(
                  List.of(
                          new ImageModuleData()
                                  .setMainImage(
                                          new Image()
                                                  .setSourceUri(
                                                          new ImageUri()
                                                                  .setUri(
                                                                          "http://farm4.staticflickr.com/3738/12440799783_3dc3c20606_b.jpg"))
                                                  .setContentDescription(
                                                          new LocalizedString()
                                                                  .setDefaultValue(
                                                                          new TranslatedString()
                                                                                  .setLanguage("en-US")
                                                                                  .setValue("Image module description"))))
                                  .setId("IMAGE_MODULE_ID")))
          .setBarcode(new Barcode().setType("QR_CODE").setValue("QR code value"))
          .setCardTitle(
              new LocalizedString()
                  .setDefaultValue(
                      new TranslatedString().setLanguage("en-US").setValue("Generic card title")))
          .setHeader(
              new LocalizedString()
                  .setDefaultValue(
                      new TranslatedString().setLanguage("en-US").setValue("Generic header")))
          .setHexBackgroundColor("#4285f4")
          .setLogo(
              new Image()
                  .setSourceUri(
                      new ImageUri()
                          .setUri(
                              "https://storage.googleapis.com/wallet-lab-tools-codelab-artifacts-public/pass_google_logo.jpg"))
                  .setContentDescription(
                      new LocalizedString()
                          .setDefaultValue(
                              new TranslatedString()
                                  .setLanguage("en-US")
                                  .setValue("Generic card logo"))));

  // Create the JWT as a HashMap object
  HashMap<String, Object> claims = new HashMap<String, Object>();
  claims.put("iss", ((ServiceAccountCredentials) credentials).getClientEmail());
  claims.put("aud", "google");
  claims.put("origins", List.of("www.example.com"));
  claims.put("typ", "savetowallet");

  // Create the Google Wallet payload and add to the JWT
  HashMap<String, Object> payload = new HashMap<String, Object>();
  payload.put("genericClasses", List.of(newClass));
  payload.put("genericObjects", List.of(newObject));
  claims.put("payload", payload);

  // The service account credentials are used to sign the JWT
  Algorithm algorithm =
      Algorithm.RSA256(
          null, (RSAPrivateKey) ((ServiceAccountCredentials) credentials).getPrivateKey());
  String token = JWT.create().withPayload(claims).sign(algorithm);

  System.out.println("Add to Google Wallet link");
  System.out.printf("https://pay.google.com/gp/v/save/%s%n", token);

  return String.format("https://pay.google.com/gp/v/save/%s", token);
}

PHP

Um mit der Integration in PHP zu beginnen, lesen Sie unsere vollständigen <ph type="x-smartling-placeholder"></ph> Codebeispiele auf GitHub

/**
 * Generate a signed JWT that creates a new pass class and object.
 *
 * When the user opens the "Add to Google Wallet" URL and saves the pass to
 * their wallet, the pass class and object defined in the JWT are
 * created. This allows you to create multiple pass classes and objects in
 * one API call when the user saves the pass to their wallet.
 *
 * @param string $issuerId The issuer ID being used for this request.
 * @param string $classSuffix Developer-defined unique ID for the pass class.
 * @param string $objectSuffix Developer-defined unique ID for the pass object.
 *
 * @return string An "Add to Google Wallet" link.
 */
public function createJwtNewObjects(string $issuerId, string $classSuffix, string $objectSuffix)
{
  // See link below for more information on required properties
  // https://developers.google.com/wallet/generic/rest/v1/genericclass
  $newClass = new GenericClass([
    'id' => "{$issuerId}.{$classSuffix}",
  ]);

  // See link below for more information on required properties
  // https://developers.google.com/wallet/generic/rest/v1/genericobject
  $newObject = new GenericObject([
    'id' => "{$issuerId}.{$objectSuffix}",
    'classId' => "{$issuerId}.{$classSuffix}",
    'state' => 'ACTIVE',
    'heroImage' => new Image([
      'sourceUri' => new ImageUri([
        'uri' => 'https://farm4.staticflickr.com/3723/11177041115_6e6a3b6f49_o.jpg'
      ]),
      'contentDescription' => new LocalizedString([
        'defaultValue' => new TranslatedString([
          'language' => 'en-US',
          'value' => 'Hero image description'
        ])
      ])
    ]),
    'textModulesData' => [
      new TextModuleData([
        'header' => 'Text module header',
        'body' => 'Text module body',
        'id' => 'TEXT_MODULE_ID'
      ])
    ],
    'linksModuleData' => new LinksModuleData([
      'uris' => [
        new Uri([
          'uri' => 'http://maps.google.com/',
          'description' => 'Link module URI description',
          'id' => 'LINK_MODULE_URI_ID'
        ]),
        new Uri([
          'uri' => 'tel:6505555555',
          'description' => 'Link module tel description',
          'id' => 'LINK_MODULE_TEL_ID'
        ])
      ]
    ]),
    'imageModulesData' => [
      new ImageModuleData([
        'mainImage' => new Image([
          'sourceUri' => new ImageUri([
            'uri' => 'http://farm4.staticflickr.com/3738/12440799783_3dc3c20606_b.jpg'
          ]),
          'contentDescription' => new LocalizedString([
            'defaultValue' => new TranslatedString([
              'language' => 'en-US',
              'value' => 'Image module description'
            ])
          ])
        ]),
        'id' => 'IMAGE_MODULE_ID'
      ])
    ],
    'barcode' => new Barcode([
      'type' => 'QR_CODE',
      'value' => 'QR code value'
    ]),
    'cardTitle' => new LocalizedString([
      'defaultValue' => new TranslatedString([
        'language' => 'en-US',
        'value' => 'Generic card title'
      ])
    ]),
    'header' => new LocalizedString([
      'defaultValue' => new TranslatedString([
        'language' => 'en-US',
        'value' => 'Generic header'
      ])
    ]),
    'hexBackgroundColor' => '#4285f4',
    'logo' => new Image([
      'sourceUri' => new ImageUri([
        'uri' => 'https://storage.googleapis.com/wallet-lab-tools-codelab-artifacts-public/pass_google_logo.jpg'
      ]),
      'contentDescription' => new LocalizedString([
        'defaultValue' => new TranslatedString([
          'language' => 'en-US',
          'value' => 'Generic card logo'
        ])
      ])
    ])
  ]);

  // The service account credentials are used to sign the JWT
  $serviceAccount = json_decode(file_get_contents($this->keyFilePath), true);

  // Create the JWT as an array of key/value pairs
  $claims = [
    'iss' => $serviceAccount['client_email'],
    'aud' => 'google',
    'origins' => ['www.example.com'],
    'typ' => 'savetowallet',
    'payload' => [
      'genericClasses' => [
        $newClass
      ],
      'genericObjects' => [
        $newObject
      ]
    ]
  ];

  $token = JWT::encode(
    $claims,
    $serviceAccount['private_key'],
    'RS256'
  );

  print "Add to Google Wallet link\n";
  print "https://pay.google.com/gp/v/save/{$token}";

  return "https://pay.google.com/gp/v/save/{$token}";
}

Python

Informationen zum Starten Ihrer Integration in Python finden Sie in unserer vollständigen <ph type="x-smartling-placeholder"></ph> Codebeispiele auf GitHub

def create_jwt_new_objects(self, issuer_id: str, class_suffix: str,
                           object_suffix: str) -> str:
    """Generate a signed JWT that creates a new pass class and object.

    When the user opens the "Add to Google Wallet" URL and saves the pass to
    their wallet, the pass class and object defined in the JWT are
    created. This allows you to create multiple pass classes and objects in
    one API call when the user saves the pass to their wallet.

    Args:
        issuer_id (str): The issuer ID being used for this request.
        class_suffix (str): Developer-defined unique ID for the pass class.
        object_suffix (str): Developer-defined unique ID for the pass object.

    Returns:
        An "Add to Google Wallet" link.
    """

    # See link below for more information on required properties
    # https://developers.google.com/wallet/generic/rest/v1/genericclass
    new_class = {'id': f'{issuer_id}.{class_suffix}'}

    # See link below for more information on required properties
    # https://developers.google.com/wallet/generic/rest/v1/genericobject
    new_object = {
        'id': f'{issuer_id}.{object_suffix}',
        'classId': f'{issuer_id}.{class_suffix}',
        'state': 'ACTIVE',
        'heroImage': {
            'sourceUri': {
                'uri':
                    'https://farm4.staticflickr.com/3723/11177041115_6e6a3b6f49_o.jpg'
            },
            'contentDescription': {
                'defaultValue': {
                    'language': 'en-US',
                    'value': 'Hero image description'
                }
            }
        },
        'textModulesData': [{
            'header': 'Text module header',
            'body': 'Text module body',
            'id': 'TEXT_MODULE_ID'
        }],
        'linksModuleData': {
            'uris': [{
                'uri': 'http://maps.google.com/',
                'description': 'Link module URI description',
                'id': 'LINK_MODULE_URI_ID'
            }, {
                'uri': 'tel:6505555555',
                'description': 'Link module tel description',
                'id': 'LINK_MODULE_TEL_ID'
            }]
        },
        'imageModulesData': [{
            'mainImage': {
                'sourceUri': {
                    'uri':
                        'http://farm4.staticflickr.com/3738/12440799783_3dc3c20606_b.jpg'
                },
                'contentDescription': {
                    'defaultValue': {
                        'language': 'en-US',
                        'value': 'Image module description'
                    }
                }
            },
            'id': 'IMAGE_MODULE_ID'
        }],
        'barcode': {
            'type': 'QR_CODE',
            'value': 'QR code'
        },
        'cardTitle': {
            'defaultValue': {
                'language': 'en-US',
                'value': 'Generic card title'
            }
        },
        'header': {
            'defaultValue': {
                'language': 'en-US',
                'value': 'Generic header'
            }
        },
        'hexBackgroundColor': '#4285f4',
        'logo': {
            'sourceUri': {
                'uri':
                    'https://storage.googleapis.com/wallet-lab-tools-codelab-artifacts-public/pass_google_logo.jpg'
            },
            'contentDescription': {
                'defaultValue': {
                    'language': 'en-US',
                    'value': 'Generic card logo'
                }
            }
        }
    }

    # Create the JWT claims
    claims = {
        'iss': self.credentials.service_account_email,
        'aud': 'google',
        'origins': ['www.example.com'],
        'typ': 'savetowallet',
        'payload': {
            # The listed classes and objects will be created
            'genericClasses': [new_class],
            'genericObjects': [new_object]
        }
    }

    # The service account credentials are used to sign the JWT
    signer = crypt.RSASigner.from_service_account_file(self.key_file_path)
    token = jwt.encode(signer, claims).decode('utf-8')

    print('Add to Google Wallet link')
    print(f'https://pay.google.com/gp/v/save/{token}')

    return f'https://pay.google.com/gp/v/save/{token}'

C#

Informationen zum Starten Ihrer Integration in C# finden Sie in unserer vollständigen <ph type="x-smartling-placeholder"></ph> Codebeispiele auf GitHub

/// <summary>
/// Generate a signed JWT that creates a new pass class and object.
/// <para />
/// When the user opens the "Add to Google Wallet" URL and saves the pass to
/// their wallet, the pass class and object defined in the JWT are created.
/// This allows you to create multiple pass classes and objects in one API
/// call when the user saves the pass to their wallet.
/// <para />
/// The Google Wallet C# library uses Newtonsoft.Json.JsonPropertyAttribute
/// to specify the property names when converting objects to JSON. The
/// Newtonsoft.Json.JsonConvert.SerializeObject method will automatically
/// serialize the object with the right property names.
/// </summary>
/// <param name="issuerId">The issuer ID being used for this request.</param>
/// <param name="classSuffix">Developer-defined unique ID for this pass class.</param>
/// <param name="objectSuffix">Developer-defined unique ID for the pass object.</param>
/// <returns>An "Add to Google Wallet" link.</returns>
public string CreateJWTNewObjects(string issuerId, string classSuffix, string objectSuffix)
{
  // Ignore null values when serializing to/from JSON
  JsonSerializerSettings excludeNulls = new JsonSerializerSettings()
  {
    NullValueHandling = NullValueHandling.Ignore
  };

  // See link below for more information on required properties
  // https://developers.google.com/wallet/generic/rest/v1/genericclass
  GenericClass newClass = new GenericClass
  {
    Id = $"{issuerId}.{classSuffix}"
  };

  // See link below for more information on required properties
  // https://developers.google.com/wallet/generic/rest/v1/genericobject
  GenericObject newObject = new GenericObject
  {
    Id = $"{issuerId}.{objectSuffix}",
    ClassId = $"{issuerId}.{classSuffix}",
    State = "ACTIVE",
    HeroImage = new Image
    {
      SourceUri = new ImageUri
      {
        Uri = "https://farm4.staticflickr.com/3723/11177041115_6e6a3b6f49_o.jpg"
      },
      ContentDescription = new LocalizedString
      {
        DefaultValue = new TranslatedString
        {
          Language = "en-US",
          Value = "Hero image description"
        }
      }
    },
    TextModulesData = new List<TextModuleData>
      {
        new TextModuleData
        {
          Header = "Text module header",
          Body = "Text module body",
          Id = "TEXT_MODULE_ID"
        }
      },
    LinksModuleData = new LinksModuleData
    {
      Uris = new List<Google.Apis.Walletobjects.v1.Data.Uri>
        {
          new Google.Apis.Walletobjects.v1.Data.Uri
          {
            UriValue = "http://maps.google.com/",
            Description = "Link module URI description",
            Id = "LINK_MODULE_URI_ID"
          },
          new Google.Apis.Walletobjects.v1.Data.Uri
          {
            UriValue = "tel:6505555555",
            Description = "Link module tel description",
            Id = "LINK_MODULE_TEL_ID"
          }
        }
    },
    ImageModulesData = new List<ImageModuleData>
      {
        new ImageModuleData
        {
          MainImage = new Image
          {
            SourceUri = new ImageUri
            {
              Uri = "http://farm4.staticflickr.com/3738/12440799783_3dc3c20606_b.jpg"
            },
            ContentDescription = new LocalizedString
            {
              DefaultValue = new TranslatedString
              {
                Language = "en-US",
                Value = "Image module description"
              }
            }
          },
          Id = "IMAGE_MODULE_ID"
        }
      },
    Barcode = new Barcode
    {
      Type = "QR_CODE",
      Value = "QR code"
    },
    CardTitle = new LocalizedString
    {
      DefaultValue = new TranslatedString
      {
        Language = "en-US",
        Value = "Generic card title"
      }
    },
    Header = new LocalizedString
    {
      DefaultValue = new TranslatedString
      {
        Language = "en-US",
        Value = "Generic header"
      }
    },
    HexBackgroundColor = "#4285f4",
    Logo = new Image
    {
      SourceUri = new ImageUri
      {
        Uri = "https://storage.googleapis.com/wallet-lab-tools-codelab-artifacts-public/pass_google_logo.jpg"
      },
      ContentDescription = new LocalizedString
      {
        DefaultValue = new TranslatedString
        {
          Language = "en-US",
          Value = "Generic card logo"
        }
      },
    }
  };

  // Create JSON representations of the class and object
  JObject serializedClass = JObject.Parse(
      JsonConvert.SerializeObject(newClass, excludeNulls));
  JObject serializedObject = JObject.Parse(
      JsonConvert.SerializeObject(newObject, excludeNulls));

  // Create the JWT as a JSON object
  JObject jwtPayload = JObject.Parse(JsonConvert.SerializeObject(new
  {
    iss = credentials.Id,
    aud = "google",
    origins = new List<string>
    {
      "www.example.com"
    },
    typ = "savetowallet",
    payload = JObject.Parse(JsonConvert.SerializeObject(new
    {
      // The listed classes and objects will be created
      // when the user saves the pass to their wallet
      genericClasses = new List<JObject>
      {
        serializedClass
      },
      genericObjects = new List<JObject>
      {
        serializedObject
      }
    }))
  }));

  // Deserialize into a JwtPayload
  JwtPayload claims = JwtPayload.Deserialize(jwtPayload.ToString());

  // The service account credentials are used to sign the JWT
  RsaSecurityKey key = new RsaSecurityKey(credentials.Key);
  SigningCredentials signingCredentials = new SigningCredentials(
      key, SecurityAlgorithms.RsaSha256);
  JwtSecurityToken jwt = new JwtSecurityToken(
      new JwtHeader(signingCredentials), claims);
  string token = new JwtSecurityTokenHandler().WriteToken(jwt);

  Console.WriteLine("Add to Google Wallet link");
  Console.WriteLine($"https://pay.google.com/gp/v/save/{token}");

  return $"https://pay.google.com/gp/v/save/{token}";
}

Node.js

Informationen zum Starten Ihrer Integration in Node.js finden Sie in unserer vollständigen <ph type="x-smartling-placeholder"></ph> Codebeispiele auf GitHub

/**
 * Generate a signed JWT that creates a new pass class and object.
 *
 * When the user opens the "Add to Google Wallet" URL and saves the pass to
 * their wallet, the pass class and object defined in the JWT are
 * created. This allows you to create multiple pass classes and objects in
 * one API call when the user saves the pass to their wallet.
 *
 * @param {string} issuerId The issuer ID being used for this request.
 * @param {string} classSuffix Developer-defined unique ID for the pass class.
 * @param {string} objectSuffix Developer-defined unique ID for the pass object.
 *
 * @returns {string} An "Add to Google Wallet" link.
 */
createJwtNewObjects(issuerId, classSuffix, objectSuffix) {
  // See link below for more information on required properties
  // https://developers.google.com/wallet/generic/rest/v1/genericclass
  let newClass = {
    'id': `${issuerId}.${classSuffix}`
  };

  // See link below for more information on required properties
  // https://developers.google.com/wallet/generic/rest/v1/genericobject
  let newObject = {
    'id': `${issuerId}.${objectSuffix}`,
    'classId': `${issuerId}.${classSuffix}`,
    'state': 'ACTIVE',
    'heroImage': {
      'sourceUri': {
        'uri': 'https://farm4.staticflickr.com/3723/11177041115_6e6a3b6f49_o.jpg'
      },
      'contentDescription': {
        'defaultValue': {
          'language': 'en-US',
          'value': 'Hero image description'
        }
      }
    },
    'textModulesData': [
      {
        'header': 'Text module header',
        'body': 'Text module body',
        'id': 'TEXT_MODULE_ID'
      }
    ],
    'linksModuleData': {
      'uris': [
        {
          'uri': 'http://maps.google.com/',
          'description': 'Link module URI description',
          'id': 'LINK_MODULE_URI_ID'
        },
        {
          'uri': 'tel:6505555555',
          'description': 'Link module tel description',
          'id': 'LINK_MODULE_TEL_ID'
        }
      ]
    },
    'imageModulesData': [
      {
        'mainImage': {
          'sourceUri': {
            'uri': 'http://farm4.staticflickr.com/3738/12440799783_3dc3c20606_b.jpg'
          },
          'contentDescription': {
            'defaultValue': {
              'language': 'en-US',
              'value': 'Image module description'
            }
          }
        },
        'id': 'IMAGE_MODULE_ID'
      }
    ],
    'barcode': {
      'type': 'QR_CODE',
      'value': 'QR code'
    },
    'cardTitle': {
      'defaultValue': {
        'language': 'en-US',
        'value': 'Generic card title'
      }
    },
    'header': {
      'defaultValue': {
        'language': 'en-US',
        'value': 'Generic header'
      }
    },
    'hexBackgroundColor': '#4285f4',
    'logo': {
      'sourceUri': {
        'uri': 'https://storage.googleapis.com/wallet-lab-tools-codelab-artifacts-public/pass_google_logo.jpg'
      },
      'contentDescription': {
        'defaultValue': {
          'language': 'en-US',
          'value': 'Generic card logo'
        }
      }
    }
  };

  // Create the JWT claims
  let claims = {
    iss: this.credentials.client_email,
    aud: 'google',
    origins: ['www.example.com'],
    typ: 'savetowallet',
    payload: {
      // The listed classes and objects will be created
      genericClasses: [newClass],
      genericObjects: [newObject]
    },
  };

  // The service account credentials are used to sign the JWT
  let token = jwt.sign(claims, this.credentials.private_key, { algorithm: 'RS256' });

  console.log('Add to Google Wallet link');
  console.log(`https://pay.google.com/gp/v/save/${token}`);

  return `https://pay.google.com/gp/v/save/${token}`;
}

Ok

Informationen zum Starten der Integration in Go finden Sie in unseren vollständigen Codebeispielen auf GitHub <ph type="x-smartling-placeholder"></ph> Codebeispiele auf GitHub

// Generate a signed JWT that creates a new pass class and object.
//
// When the user opens the "Add to Google Wallet" URL and saves the pass to
// their wallet, the pass class and object defined in the JWT are
// created. This allows you to create multiple pass classes and objects in
// one API call when the user saves the pass to their wallet.
func (d *demoGeneric) createJwtNewObjects(issuerId, classSuffix, objectSuffix string) {
	genericObject := new(walletobjects.GenericObject)
	genericObject.Id = fmt.Sprintf("%s.%s", issuerId, objectSuffix)
	genericObject.ClassId = fmt.Sprintf("%s.%s", issuerId, classSuffix)
	genericObject.State = "ACTIVE"
	genericObject.Barcode = &walletobjects.Barcode{
		Type:  "QR_CODE",
		Value: "QR code",
	}
	genericObject.CardTitle = &walletobjects.LocalizedString{
		DefaultValue: &walletobjects.TranslatedString{
			Language: "en-us",
			Value:    "Card title",
		},
	}
	genericObject.Header = &walletobjects.LocalizedString{
		DefaultValue: &walletobjects.TranslatedString{
			Language: "en-us",
			Value:    "Header",
		},
	}

	genericJson, _ := json.Marshal(genericObject)
	var payload map[string]any
	json.Unmarshal([]byte(fmt.Sprintf(`
	{
		"genericObjects": [%s]
	}
	`, genericJson)), &payload)
	claims := jwt.MapClaims{
		"iss":     d.credentials.Email,
		"aud":     "google",
		"origins": []string{"www.example.com"},
		"typ":     "savetowallet",
		"payload": payload,
	}

	// The service account credentials are used to sign the JWT
	key, _ := jwt.ParseRSAPrivateKeyFromPEM(d.credentials.PrivateKey)
	token, _ := jwt.NewWithClaims(jwt.SigningMethodRS256, claims).SignedString(key)

	fmt.Println("Add to Google Wallet link")
	fmt.Println("https://pay.google.com/gp/v/save/" + token)
}

Android-Apps

Wenn die Methode savePasses aufgerufen wird, um eine Karte bzw. ein Ticket an einen Nutzer auszustellen, signiert das Google Wallet Android SDK dein JWT automatisch mit dem SHA-1-Fingerabdruck deines App-Signaturschlüssels, den du in der Google Wallet Business Console angegeben hast. Alternativ kannst du die Karte bzw. das Ticket auch mithilfe eines zuvor signierten JWT mit der Methode savePassesJwt des Android SDK ausstellen.

Weitere Informationen findest du unter Karten/Tickets mit dem Android SDK ausgeben.