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对向 Google Wallet API 发出的请求进行身份验证

必须对向 Google Wallet API 发出的请求进行身份验证，以便 Wallet API 识别相应请求是由您的应用发出的。

在开始之前，请确保您已正确生成并注册 Google Wallet REST API 和 Google Wallet Android SDK 的凭据。

Google Wallet REST API 请求

对 Google Wallet REST API 的请求使用 Google Wallet REST API Google Cloud 服务账号密钥进行身份验证，以获取访问令牌。

Google API 客户端库可处理身份验证和发出 API 请求。确保针对您偏好的编程语言安装库，以下示例使用的是该语言。

首先，执行必要的库导入，并为服务账号 JSON 定义一些变量，以及将要保存的发卡机构、类、唯一身份用户和对象的 ID。

Java

若要开始使用 Java 进行集成，请参阅 <ph type="x-smartling-placeholder"></ph> GitHub 上的代码示例。

import com.auth0.jwt.JWT;
import com.auth0.jwt.algorithms.Algorithm;
import com.google.api.client.googleapis.batch.BatchRequest;
import com.google.api.client.googleapis.batch.json.JsonBatchCallback;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.googleapis.json.GoogleJsonError;
import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.*;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.walletobjects.*;
import com.google.api.services.walletobjects.model.*;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.ServiceAccountCredentials;
import java.io.*;
import java.security.interfaces.RSAPrivateKey;
import java.util.*;

/** Demo class for creating and managing Loyalty cards in Google Wallet. */
public class DemoLoyalty {
  /**
   * Path to service account key file from Google Cloud Console. Environment variable:
   * GOOGLE_APPLICATION_CREDENTIALS.
   */
  public static String keyFilePath;

  /** Service account credentials for Google Wallet APIs. */
  public static GoogleCredentials credentials;

  /** Google Wallet service client. */
  public static Walletobjects service;

  public DemoLoyalty() throws Exception {
    keyFilePath =
        System.getenv().getOrDefault("GOOGLE_APPLICATION_CREDENTIALS", "/path/to/key.json");

    auth();
  }

PHP

要开始使用 PHP 进行集成，请参阅我们的完整 <ph type="x-smartling-placeholder"></ph> GitHub 上的代码示例。

use Firebase\JWT\JWT;
use Google\Auth\Credentials\ServiceAccountCredentials;
use Google\Client as GoogleClient;
use Google\Service\Walletobjects;
use Google\Service\Walletobjects\LoyaltyPointsBalance;
use Google\Service\Walletobjects\LoyaltyPoints;
use Google\Service\Walletobjects\LoyaltyObject;
use Google\Service\Walletobjects\LoyaltyClass;
use Google\Service\Walletobjects\LatLongPoint;
use Google\Service\Walletobjects\Barcode;
use Google\Service\Walletobjects\ImageModuleData;
use Google\Service\Walletobjects\LinksModuleData;
use Google\Service\Walletobjects\TextModuleData;
use Google\Service\Walletobjects\TranslatedString;
use Google\Service\Walletobjects\LocalizedString;
use Google\Service\Walletobjects\ImageUri;
use Google\Service\Walletobjects\Image;
use Google\Service\Walletobjects\Message;
use Google\Service\Walletobjects\AddMessageRequest;
use Google\Service\Walletobjects\Uri;

/** Demo class for creating and managing Loyalty cards in Google Wallet. */
class DemoLoyalty
{
  /**
   * The Google API Client
   * https://github.com/google/google-api-php-client
   */
  public GoogleClient $client;

  /**
   * Path to service account key file from Google Cloud Console. Environment
   * variable: GOOGLE_APPLICATION_CREDENTIALS.
   */
  public string $keyFilePath;

  /**
   * Service account credentials for Google Wallet APIs.
   */
  public ServiceAccountCredentials $credentials;

  /**
   * Google Wallet service client.
   */
  public Walletobjects $service;

  public function __construct()
  {
    $this->keyFilePath = getenv('GOOGLE_APPLICATION_CREDENTIALS') ?: '/path/to/key.json';

    $this->auth();
  }

Python

要开始在 Python 中进行集成，请参阅我们完整 <ph type="x-smartling-placeholder"></ph> GitHub 上的代码示例。

import json
import os
import uuid

from googleapiclient.discovery import build
from googleapiclient.errors import HttpError
from google.oauth2.service_account import Credentials
from google.auth import jwt, crypt


class DemoLoyalty:
    """Demo class for creating and managing Loyalty cards in Google Wallet.

    Attributes:
        key_file_path: Path to service account key file from Google Cloud
            Console. Environment variable: GOOGLE_APPLICATION_CREDENTIALS.
        base_url: Base URL for Google Wallet API requests.
    """

    def __init__(self):
        self.key_file_path = os.environ.get('GOOGLE_APPLICATION_CREDENTIALS',
                                            '/path/to/key.json')
        # Set up authenticated client
        self.auth()

C#

要开始使用 C# 进行集成，请参阅我们的完整 <ph type="x-smartling-placeholder"></ph> GitHub 上的代码示例。

using System.IdentityModel.Tokens.Jwt;
using System.Net.Http.Headers;
using System.Text.RegularExpressions;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Services;
using Google.Apis.Walletobjects.v1;
using Google.Apis.Walletobjects.v1.Data;
using Microsoft.IdentityModel.Tokens;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;


/// <summary>
/// Demo class for creating and managing Loyalty cards in Google Wallet.
/// </summary>
class DemoLoyalty
{
  /// <summary>
  /// Path to service account key file from Google Cloud Console. Environment
  /// variable: GOOGLE_APPLICATION_CREDENTIALS.
  /// </summary>
  public static string keyFilePath;

  /// <summary>
  /// Service account credentials for Google Wallet APIs
  /// </summary>
  public static ServiceAccountCredential credentials;

  /// <summary>
  /// Google Wallet service client
  /// </summary>
  public static WalletobjectsService service;

  public DemoLoyalty()
  {
    keyFilePath = Environment.GetEnvironmentVariable(
        "GOOGLE_APPLICATION_CREDENTIALS") ?? "/path/to/key.json";

    Auth();
  }

Node.js

若要开始在 Node 中进行集成，请参阅我们完整 <ph type="x-smartling-placeholder"></ph> GitHub 上的代码示例。

const { google } = require('googleapis');
const jwt = require('jsonwebtoken');
const { v4: uuidv4 } = require('uuid');

/**
 * Demo class for creating and managing Loyalty cards in Google Wallet.
 */
class DemoLoyalty {
  constructor() {
    /**
     * Path to service account key file from Google Cloud Console. Environment
     * variable: GOOGLE_APPLICATION_CREDENTIALS.
     */
    this.keyFilePath = process.env.GOOGLE_APPLICATION_CREDENTIALS || '/path/to/key.json';
    this.auth();
  }

Go

要开始在 Go 中进行集成，请参阅 GitHub 上的完整代码示例 <ph type="x-smartling-placeholder"></ph> GitHub 上的代码示例。

package main

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"github.com/golang-jwt/jwt"
	"github.com/google/uuid"
	"golang.org/x/oauth2"
	"golang.org/x/oauth2/google"
	oauthJwt "golang.org/x/oauth2/jwt"
	"google.golang.org/api/option"
	"google.golang.org/api/walletobjects/v1"
	"io"
	"log"
	"os"
	"strings"
)

接下来，使用其中一个框架库检索调用 Google Wallet API 所需的凭据。