Uỷ quyền cho yêu cầu

Java

Đây là quy trình mã uỷ quyền dòng lệnh được mô tả trong phần Sử dụng OAuth 2.0 cho Đã cài đặt Ứng dụng.

Đoạn mã mẫu từ mẫu Java của Content API mã:

    public static void main(String[] args) {
      try {
        httpTransport = GoogleNetHttpTransport.newTrustedTransport();
        dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);
        jsonFactory = JacksonFactory.getDefaultInstance();
        scopes =  "https://www.googleapis.com/auth/manufacturercenter";

        // load configuration
        File configPath = new File(basePath, "manufacturers");
        File configFile = new File(configPath, manufacturers-info.json);
        ManufacturersConfig config = new JacksonFactory().fromInputStream(inputStream, ManufacturersConfig.class);
        config.setPath(configPath);

        // Get authorization token
        Credential credential = authenticate(httpTransport, dataStoreFactory, config, jsonFactory, scopes);
        // ...
      }
    }

    private static Credential authenticate(httpTransport, dataStoreFactory, config, jsonFactory, scopes) throws Exception {
      try {
        Credential credential = GoogleCredential.getApplicationDefault().createScoped(scopes);
        System.out.println("Loaded the Application Default Credentials.");
        return credential;
      } catch (IOException e) {
        // No need to do anything, we'll fall back on other credentials.
      }
      if (config.getPath() == null) {
        throw new IllegalArgumentException(
            "Must use Application Default Credentials with no configuration directory.");
      }
      File clientSecretsFile = new File(config.getPath(), "client-secrets.json");
      if (clientSecretsFile.exists()) {
        System.out.println("Loading OAuth2 client credentials.");
        try (InputStream inputStream = new FileInputStream(clientSecretsFile)) {
          GoogleClientSecrets clientSecrets =
              GoogleClientSecrets.load(jsonFactory, new InputStreamReader(inputStream));
          // set up authorization code flow
          GoogleAuthorizationCodeFlow flow =
              new GoogleAuthorizationCodeFlow.Builder(
                      httpTransport, jsonFactory, clientSecrets, scopes)
                  .setDataStoreFactory(dataStoreFactory)
                  .build();
          // authorize
          String userID = ConfigDataStoreFactory.UNUSED_ID;
          Credential storedCredential = flow.loadCredential(userID);
          if (storedCredential != null) {
            System.out.printf("Retrieved stored credential for %s from cache.%n", userID);
            return storedCredential;
          }
          LocalServerReceiver receiver =
              new LocalServerReceiver.Builder().setHost("localhost").setPort(9999).build();
          Credential credential = new AuthorizationCodeInstalledApp(flow, receiver).authorize(userID);
          System.out.printf("Retrieved credential for %s from web.%n", userID);
          return credential;
        } catch (IOException e) {
          throw new IOException(
              "Could not retrieve OAuth2 client credentials from the file "

                                    +   clientSecretsFile.getCanonicalPath());
        }
      }
      throw new IOException(
          "No authentication credentials found. Checked the Google Application"
                            +   "Default Credentials and the paths "
                            +   clientSecretsFile.getCanonicalPath()
                            +   ". Please read the accompanying README.");
    }