JSON Web Token 是常用的業界標準，可將資訊以 JSON 物件的形式安全地傳輸。使用 Google Wallet API 時，必須將要用來建立 JWT (發音為「jot」) 格式的票證物件詳細資料編碼，再透過要求將該 JWT 傳送至 Google Wallet API。
JWT 會先以共用密鑰簽署，然後再傳送到 Google Wallet API，藉此確保 JWT 安全無虞。如果您使用 Google Wallet REST API，簽署密鑰即為您的 Google Cloud 服務帳戶金鑰。如果您使用的是 Google 錢包 Android SDK，簽署密鑰就是 Android 應用程式的 SHA-1 指紋。
在 JWT 中將票證編碼
建立 LoyaltyObject 時，請使用 payload.LoyaltyObjects 屬性納入未簽署的 JWT，如以下程式碼片段所示：
JSON
{
"iss": "OWNER_EMAIL_ADDRESS",
"aud": "google",
"typ": "savetowallet",
"iat": "UNIX_TIME",
"origins": [],
"payload": {
"loyaltyObjects": [ NEW_OBJECT ]
}
}如要進一步瞭解 JWT 的預期格式，請參閱 JWT 參考資料。
簽署 JWT
JWT 會先以共用密鑰簽署，然後再傳送到 Google Wallet API，藉此確保 JWT 安全無虞。如果您使用 Google Wallet REST API，簽署密鑰即為您的 Google Cloud 服務帳戶金鑰。如果您使用的是 Google 錢包 Android SDK，簽署密鑰就是 Android 應用程式的 SHA-1 指紋。
網頁、電子郵件和簡訊
簽署 JWT 時，請務必使用您在 Google 電子錢包商家主控台中授權的 Google Cloud 服務帳戶關聯的服務帳戶金鑰。Google Wallet API 會驗證 JWT 簽章，藉此驗證這些憑證附加資訊。
簽署 JWT 會產生憑證，用來建立「新增至 Google 錢包」可用於核發票證給使用者：
Java
如要開始在 Java 中整合，請參閱我們提供的完整 查看程式碼範例
/**
* 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/retail/loyalty-cards/rest/v1/loyaltyclass
LoyaltyClass newClass =
new LoyaltyClass()
.setId(String.format("%s.%s", issuerId, classSuffix))
.setIssuerName("Issuer name")
.setReviewStatus("UNDER_REVIEW")
.setProgramName("Program name")
.setProgramLogo(
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("Logo description"))));
// See link below for more information on required properties
// https://developers.google.com/wallet/retail/loyalty-cards/rest/v1/loyaltyobject
LoyaltyObject newObject =
new LoyaltyObject()
.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"))
.setLocations(
List.of(
new LatLongPoint()
.setLatitude(37.424015499999996)
.setLongitude(-122.09259560000001)))
.setAccountId("Account ID")
.setAccountName("Account name")
.setLoyaltyPoints(
new LoyaltyPoints()
.setLabel("Points")
.setBalance(new LoyaltyPointsBalance().setInt(800)));
// 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("loyaltyClasses", List.of(newClass));
payload.put("loyaltyObjects", 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
如要在 PHP 中開始整合，請參閱我們提供的完整 查看程式碼範例
/**
* 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/retail/loyalty-cards/rest/v1/loyaltyclass
$newClass = new LoyaltyClass([
'id' => "{$issuerId}.{$classSuffix}",
'issuerName' => 'Issuer name',
'reviewStatus' => 'UNDER_REVIEW',
'programName' => 'Program name',
'programLogo' => new Image([
'sourceUri' => new ImageUri([
'uri' => 'http://farm8.staticflickr.com/7340/11177041185_a61a7f2139_o.jpg'
]),
'contentDescription' => new LocalizedString([
'defaultValue' => new TranslatedString([
'language' => 'en-US',
'value' => 'Logo description'
])
])
])
]);
// See link below for more information on required properties
// https://developers.google.com/wallet/retail/loyalty-cards/rest/v1/loyaltyobject
$newObject = new LoyaltyObject([
'id' => "{$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'
]),
'locations' => [
new LatLongPoint([
'latitude' => 37.424015499999996,
'longitude' => -122.09259560000001
])
],
'accountId' => 'Account ID',
'accountName' => 'Account name',
'loyaltyPoints' => new LoyaltyPoints([
'balance' => new LoyaltyPointsBalance([
'int' => 800
])
])
]);
// 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' => [
'loyaltyClasses' => [
$newClass
],
'loyaltyObjects' => [
$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
如要開始以 Python 進行整合，請參閱我們提供的完整 查看程式碼範例
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/retail/loyalty-cards/rest/v1/loyaltyclass
new_class = {
'id': f'{issuer_id}.{class_suffix}',
'issuerName': 'Issuer name',
'reviewStatus': 'UNDER_REVIEW',
'programName': 'Program name',
'programLogo': {
'sourceUri': {
'uri':
'http://farm8.staticflickr.com/7340/11177041185_a61a7f2139_o.jpg'
},
'contentDescription': {
'defaultValue': {
'language': 'en-US',
'value': 'Logo description'
}
}
}
}
# See link below for more information on required properties
# https://developers.google.com/wallet/retail/loyalty-cards/rest/v1/loyaltyobject
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'
},
'locations': [{
'latitude': 37.424015499999996,
'longitude': -122.09259560000001
}],
'accountId': 'Account id',
'accountName': 'Account name',
'loyaltyPoints': {
'label': 'Points',
'balance': {
'int': 800
}
}
}
# 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
'loyaltyClasses': [new_class],
'loyaltyObjects': [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#
如要開始在 C# 中整合，請參閱我們提供的完整 查看程式碼範例
/// <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/retail/loyalty-cards/rest/v1/loyaltyclass
LoyaltyClass newClass = new LoyaltyClass
{
Id = $"{issuerId}.{classSuffix}",
IssuerName = "Issuer name",
ReviewStatus = "UNDER_REVIEW",
ProgramName = "Program name",
ProgramLogo = new Image
{
SourceUri = new ImageUri
{
Uri = "http://farm8.staticflickr.com/7340/11177041185_a61a7f2139_o.jpg"
},
ContentDescription = new LocalizedString
{
DefaultValue = new TranslatedString
{
Language = "en-US",
Value = "Logo description"
}
}
}
};
// See link below for more information on required properties
// https://developers.google.com/wallet/retail/loyalty-cards/rest/v1/loyaltyobject
LoyaltyObject newObject = new LoyaltyObject
{
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"
},
Locations = new List<LatLongPoint>
{
new LatLongPoint
{
Latitude = 37.424015499999996,
Longitude = -122.09259560000001
}
},
AccountId = "Account id",
AccountName = "Account name",
LoyaltyPoints = new LoyaltyPoints
{
Label = "Points",
Balance = new LoyaltyPointsBalance
{
Int__ = 800
}
}
};
// 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
loyaltyClasses = new List<JObject>
{
serializedClass
},
loyaltyObjects = 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 $"https://pay.google.com/gp/v/save/{token}";
}
Node.js
如要在節點環境中展開整合作業，請參閱我們提供的完整 查看程式碼範例
/**
* Generate a signed JWT that creates a new pass class and object.
*
* When the user opens the "Add to Google Wallet" URL and saves the pass to
* their wallet, the pass class and object defined in the JWT are
* created. This allows you to create multiple pass classes and objects in
* one API call when the user saves the pass to their wallet.
*
* @param {string} issuerId The issuer ID being used for this request.
* @param {string} classSuffix Developer-defined unique ID for the pass class.
* @param {string} objectSuffix Developer-defined unique ID for the pass object.
*
* @returns {string} An "Add to Google Wallet" link.
*/
createJwtNewObjects(issuerId, classSuffix, objectSuffix) {
// See link below for more information on required properties
// https://developers.google.com/wallet/retail/loyalty-cards/rest/v1/loyaltyclass
let newClass = {
'id': `${issuerId}.${classSuffix}`,
'issuerName': 'Issuer name',
'reviewStatus': 'UNDER_REVIEW',
'programName': 'Program name',
'programLogo': {
'sourceUri': {
'uri': 'http://farm8.staticflickr.com/7340/11177041185_a61a7f2139_o.jpg'
},
'contentDescription': {
'defaultValue': {
'language': 'en-US',
'value': 'Logo description'
}
}
}
};
// See link below for more information on required properties
// https://developers.google.com/wallet/retail/loyalty-cards/rest/v1/loyaltyobject
let newObject = {
'id': `${issuerId}.${objectSuffix}`,
'classId': `${issuerId}.${classSuffix}`,
'state': 'ACTIVE',
'heroImage': {
'sourceUri': {
'uri': 'https://farm4.staticflickr.com/3723/11177041115_6e6a3b6f49_o.jpg'
},
'contentDescription': {
'defaultValue': {
'language': 'en-US',
'value': 'Hero image description'
}
}
},
'textModulesData': [
{
'header': 'Text module header',
'body': 'Text module body',
'id': 'TEXT_MODULE_ID'
}
],
'linksModuleData': {
'uris': [
{
'uri': 'http://maps.google.com/',
'description': 'Link module URI description',
'id': 'LINK_MODULE_URI_ID'
},
{
'uri': 'tel:6505555555',
'description': 'Link module tel description',
'id': 'LINK_MODULE_TEL_ID'
}
]
},
'imageModulesData': [
{
'mainImage': {
'sourceUri': {
'uri': 'http://farm4.staticflickr.com/3738/12440799783_3dc3c20606_b.jpg'
},
'contentDescription': {
'defaultValue': {
'language': 'en-US',
'value': 'Image module description'
}
}
},
'id': 'IMAGE_MODULE_ID'
}
],
'barcode': {
'type': 'QR_CODE',
'value': 'QR code'
},
'locations': [
{
'latitude': 37.424015499999996,
'longitude': -122.09259560000001
}
],
'accountId': 'Account id',
'accountName': 'Account name',
'loyaltyPoints': {
'label': 'Points',
'balance': {
'int': 800
}
}
};
// Create the JWT claims
let claims = {
iss: this.credentials.client_email,
aud: 'google',
origins: ['www.example.com'],
typ: 'savetowallet',
payload: {
// The listed classes and objects will be created
loyaltyClasses: [newClass],
loyaltyObjects: [newObject]
}
};
// The service account credentials are used to sign the JWT
let token = jwt.sign(claims, this.credentials.private_key, { algorithm: 'RS256' });
console.log('Add to Google Wallet link');
console.log(`https://pay.google.com/gp/v/save/${token}`);
return `https://pay.google.com/gp/v/save/${token}`;
}
Go
如要在 Go 中開始進行整合作業，請參閱 GitHub 上的完整程式碼範例 GitHub 上的程式碼範例。
// 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 *demoLoyalty) createJwtNewObjects(issuerId, classSuffix, objectSuffix string) {
loyaltyObject := new(walletobjects.LoyaltyObject)
loyaltyObject.Id = fmt.Sprintf("%s.%s", issuerId, objectSuffix+"_")
loyaltyObject.ClassId = fmt.Sprintf("%s.%s", issuerId, classSuffix)
loyaltyObject.AccountName = "Account name"
loyaltyObject.AccountId = "Account id"
loyaltyObject.State = "ACTIVE"
loyaltyJson, _ := json.Marshal(loyaltyObject)
var payload map[string]any
json.Unmarshal([]byte(fmt.Sprintf(`
{
"loyaltyObjects": [%s]
}
`, loyaltyJson)), &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 for new objects")
fmt.Println("https://pay.google.com/gp/v/save/" + token)
}
Android 應用程式
呼叫 savePasses 方法以核發票證給使用者時，Google 錢包 Android SDK 會自動使用您在 Google 錢包商家主控台提供的應用程式簽署金鑰 SHA-1 指紋來簽署 JWT。您也可以使用 Android SDK 的 savePassesJwt 方法，透過先前簽署的 JWT 發出票證。
詳情請參閱使用 Android SDK 發出票證。