Question

我正在尝试为服务器端应用实施Google登录。在我的app引擎应用程序中。我正在使用Eclipse Luna，我已经从这个链接中学习了教程：https://developers.google.com/identity/sign-in/web/server-side-flow#step_7_exchange_the_authorization_code_for_an_access_token

我在构建路径中添加了以下jar文件： google-api-client-jackson2-1.16.0-rc.jar，appengine-gcs-client-0.5.jar，和我从maven repo下载的google-api-client-1.8.0-beta.jar。

我有一个错误，我不知道还有什么办法来解决它。我在我的代码中用双星号标记了它。

错误消息为：The type com.google.api.client.json.JsonFactory cannot be resolved. It is indirectly referenced from required .class files.
我在StackOverflow上搜索过类似的问题，但我找不到解决这个问题的答案。

拜托，有人可以怜悯我并帮助我！此功能延迟了我的部署。提前谢谢。

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    // Set path to the Web application client_secret_*.json file you downloaded from the
    // Google Developers Console: https://console.developers.google.com/apis/credentials?project=_
    // You can also find your Web application client ID and client secret from the
    // console and specify them directly when you create the GoogleAuthorizationCodeTokenRequest
    // object.
    ServletContext context = getServletContext();
    String CLIENT_SECRET_FILE  = context.getRealPath("/WEB-INF/client/client_secret.json");     

    // Exchange auth code for access token
    GoogleClientSecrets clientSecrets =
        **GoogleClientSecrets.load(
            JacksonFactory.getDefaultInstance(), new FileReader(CLIENT_SECRET_FILE));**
    GoogleTokenResponse tokenResponse =
              new GoogleAuthorizationCodeTokenRequest(
                  new NetHttpTransport(),
                  JacksonFactory.getDefaultInstance(),
                  "https://www.googleapis.com/oauth2/v4/token",
                  clientSecrets.getDetails().getClientId(),
                  clientSecrets.getDetails().getClientSecret(),
                  authCode,
                  REDIRECT_URI)  // Specify the same redirect URI that you use with your web
                                 // app. If you don't have a web version of your app, you can
                                 // specify an empty string.
                  .execute();

    String accessToken = tokenResponse.getAccessToken();

    // Use access token to call API
    GoogleCredential credential = new GoogleCredential().setAccessToken(accessToken);
    Drive drive =
        new Drive.Builder(new NetHttpTransport(), JacksonFactory.getDefaultInstance(), credential)
            .setApplicationName("Auth Code Exchange Demo")
            .build();
    File file = drive.files().get("appfolder").execute();

    // Get profile info from ID token
    GoogleIdToken idToken = tokenResponse.parseIdToken();
    GoogleIdToken.Payload payload = idToken.getPayload();
    String userId = payload.getSubject();  // Use this value as a key to identify a user.
    String email = payload.getEmail();
    boolean emailVerified = Boolean.valueOf(payload.getEmailVerified());
    String name = (String) payload.get("name");
    String pictureUrl = (String) payload.get("picture");
    String locale = (String) payload.get("locale");
    String familyName = (String) payload.get("family_name");
    String givenName = (String) payload.get("given_name");      

}

Answer 1

我假设你已经下载了dependencies但你没有使用maven，我认为问题是Maven自动解决了间接依赖关系，但你还没有解决它们。

如果你想使用google的jsonFactory，你需要http-client库。

您可以在此处下载：

http://repo2.maven.org/maven2/com/google/http-client/google-http-client-jackson/

无法解析com.google.api.client.json.JsonFactory类型

1 个答案: