我有一个Android应用程序与GAE服务器。我试图描述developers.google.com上对用户进行认证，我添加的用户参数设置为端点的方法等。我得到），用户是不为空，但这种方法getUserId（返回null。它是与此类似，而老问题： Function User.getUserId（）云终端API为用户对象，它是不是null 返回null 但我还是不知道如何解决它。你如何处理这个错误？你有没有遇到过？

I have an Android application with GAE server. I tried to authenticate the user as described on developers.google.com, I added the user parameter to the endpoint methods etc. I get a User which is not null, but this method getUserId() returns null. It is similar to this, rather old problem: Function User.getUserId() in Cloud endpoint api returns null for a user object that is not null But I still don't know how to work around it. How do you handle this error? Have you ever encountered it?

在这里Android客户端是我做的事（其简化的）：

In android client here's what I did (its simplified) :

credentials = GoogleAccountCredential.usingAudience(getApplicationContext(),         "server:client_id:" + WEB_CLIENT_ID);
credentials.setSelectedAccountName(accountName);
WarriorEntityEndpoint.Builder endpointBuilder = new WarriorEntityEndpoint.Builder(AndroidHttp.newCompatibleTransport(), new GsonFactory(), credentials);
warriorEntityEndpoint = endpointBuilder.build();

new AsyncTask<Void, Void, Void>() {
    @Override
    protected Void doInBackground(Void... params) {
        // TODO Auto-generated method stub
        try {
            warriorEntityEndpoint.getWarrior().execute();
        } catch (Exception e) {
        }
        return null;
    }
}.execute();

和在GAE上：

@Api(name = "warriorEntityEndpoint", namespace = @ApiNamespace(ownerDomain = "szpyt.com", ownerName = "szpyt.com", packagePath = "mmorpg.monsters"),
version = "version1",
scopes = {"https://www.googleapis.com/auth/userinfo.email", "https://www.googleapis.com/auth/userinfo.profile"},
clientIds = {Constants.ANDROID_CLIENT_ID, Constants.WEB_CLIENT_ID},
audiences = {Constants.ANDROID_AUDIENCE})
public class WarriorEntityEndpoint {
private static final Logger log = Logger.getLogger(WarriorEntityEndpoint.class.getName());
@ApiMethod(name = "getWarrior")
public WarriorEntity getWarrior(User user) throws OAuthRequestException, IOException  {
    log.log(Level.SEVERE, "this gives correct email: " + user.getEmail());
    log.log(Level.SEVERE, "this is null: " + user.getUserId());

我还另一个非常重要的问题：是该用户认证，如果getMail（）给了我正确的帐户，但getUserId（）给出空？我读了用户对象为空，如果它没有经过认证，但我不知道任何更多... 我使用的App Engine SDK 1.8.7。我测试一个真实的设备和后端部署到GAE上。

I have also another very important question: is this user authenticated, if getMail() gives me correct account, but getUserId() gives null? I read that user object should be null if it was not authenticated but I am not sure any more... I'm using App engine SDK 1.8.7. I'm testing on a real device and backend deployed to GAE.

推荐答案

我想有它现在没有很好的解决方案。我保存电子邮件作为一个正常的财产和默认删除它提取组，我用只要一个主键（由AppEngine上生成的），我的E-mail属性查询实体。我不喜欢我的解决方案，我会接受（并实现:)）一个更好的，如果任何人都可以提供。

I guess there is no good solution for it right now. I store e-mail as a normal property and remove it from default fetch group, I use long as a primary key (generated by AppEngine) and I query the entity by the e-mail property. I don't like my solution, I'll accept ( and implement :) ) a better one if anyone can provide.