OAuth 和 google plus api

Question

我正在我的 Gaelyk 应用程序之一中使用 google-start-project 的代码。这是 OAuth 2.0 授权过程的常规代码。与 Twitter 不同，每当应用程序请求授权时，用户必须允许应用程序继续，我认为这很奇怪。我犯了一些错误吗？

    // Check for an error returned by OAuth
if ( params.error ) {
    response.setContentType("text/plain");
    out.println("There was a problem during authentication: " + error);
    log.severe("There was a problem during authentication: " + error);
    return;
}

// When we're redirected back from the OAuth 2.0 grant page, a code will be supplied in a GET parameter named 'code'

if ( !params.code ) {
    // Now that we have the OAuth 2.0 code, we must exchange it for a token to make API requests.

    // Build the authorization URL
    AuthorizationRequestUrl authorizeUrl = new GoogleAuthorizationRequestUrl(
            CLIENT_ID,
            REDIRECT_URI,
            SCOPES
        );
    authorizeUrl.redirectUri = REDIRECT_URI;
    authorizeUrl.scope = SCOPES;
    String authorizationUrl = authorizeUrl.build();

    log.info("Redirecting browser for OAuth 2.0 authorization to " + authorizationUrl);
    response.sendRedirect(authorizationUrl);
    return;
} else {
    log.info("Exchanging OAuth code for access token using server side call");

    AccessTokenResponse accessTokenResponse = new GoogleAccessTokenRequest.GoogleAuthorizationCodeGrant(
            new NetHttpTransport(),
            new GsonFactory(),
            CLIENT_ID,
            CLIENT_SECRET,
            params.code,
            REDIRECT_URI
        ).execute();

    log.info("Storing authentication token into the session");
    request.session.accessToken = accessTokenResponse.accessToken
    request.session.refreshToken = accessTokenResponse.refreshToken

    //The authentication is all done! Redirect back to the samples index so you can play with them.
    response.sendRedirect("/");
}

Answer 1

不，你做得对。我认为 Google+ 不支持身份验证 - 仅支持授权。这就是 OAuth 的理念——授权用户，而不是验证用户的身份。对于身份验证，您可以使用 OpenID。

顺便说一句，起始项目有点复杂，不支持maven，并且当google添加新的API方法时没有及时更新。因此我创建了这个项目，你可以检查一下它是否适合你。