Question

端点方法如下所示：

@Api(
    name = "gameape",
    version = "v1",
    description = "Game App API",
    audiences = { "mynumber.apps.googleusercontent.com" },
    clientIds = { "mynumber.apps.googleusercontent.com", Constant.API_EXPLORER_CLIENT_ID },
    defaultVersion = AnnotationBoolean.TRUE)
public class GameApp {

    private final AccountDao accountDao = new AccountDaoImpl();

    @ApiMethod(name = "LoginUser", path = "LoginUser", httpMethod = HttpMethod.POST)
    public void LoginUser(LoginData request) {
        long phone = request.getPhone();
        String deviceId = request.getDeviceId();
        String gcmToken = request.getGcmToken();
        Account acc = new Account(phone, deviceId, gcmToken);
        accountDao.put(acc);
        ApiHelper.sendGCM(phone, "welcome to my game app");
    }
}

android的片段如下所示：

@Override
protected Boolean doInBackground(Void... params) {
    LoginData request = new LoginData();
    request.setUsername(username);
    request.setPassword(password);

   try {
     RegisterUser reg = service.registerUser(request);
     reg.execute();
     return true;
   } catch (Exception e) {
     Log.e(LoginActivity.class.getName(),
        "Exception received from server at "
         + service.getRootUrl(), e);
   }
   return false;
}

调用reg.execute()不断抛出异常：

java.lang.IllegalArgumentException: the name must not be empty: null

从服务器控制台看，它甚至看起来都没有被命中。即使我尝试在调试模式下运行服务器，也不会到达断点（方法内的第一行）。

编辑：添加堆栈跟踪：

04-03 13:38:42.688: I/com.me.gameapp.LoginActivity$UserLoginTask(11255): Enter doInBackground
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255): Exception received from server at https://1.myapp.appspot.com/_ah/api/
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255): java.lang.IllegalArgumentException: the name must not be empty: null
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at android.os.Parcel.readException(Parcel.java:1251)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at android.os.Parcel.readException(Parcel.java:1235)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.android.gms.internal.x$a$a.a(Unknown Source)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential.getToken(GoogleAccountCredential.java:192)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential$RequestHandler.intercept(GoogleAccountCredential.java:217)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:836)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:412)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:345)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:463)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.me.gameapp.LoginActivity$UserLoginTask.doInBackground(LoginActivity.java:262)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at com.me.gameapp.LoginActivity$UserLoginTask.doInBackground(LoginActivity.java:1)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at android.os.AsyncTask$2.call(AsyncTask.java:185)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at java.util.concurrent.FutureTask.run(FutureTask.java:137)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
04-03 13:38:42.786: E/com.me.gameapp.LoginActivity(11255):  at java.lang.Thread.run(Thread.java:1096)
04-03 13:38:42.786: I/com.me.gameapp.LoginActivity$UserLoginTask(11255): Leave doInBackground with false

在Exception received from server at https://1.myapp.appspot.com/_ah/api/行中，我正在运行localhost上的所有内容。也许https://1.myapp.appspot.com/_ah/api/错了。我的代码非常接近模板，所以我不确定这是我所做的改变。

Answer 1

此处引用的名称是选定的帐户名称，而不是应用程序名称。

同样在Android 6.0 上，您需要在调用Google端点之前获得通讯录权限。否则，即使您使用

设置帐户名称

credential.setSelectedAccountName(accountName);

您仍会收到上述异常。

Answer 2

在为我自己测试时出现了类似的错误消息，为我解决的问题是使用

credential.setSelectedAccountName（ “user@gmail.com”）;

跑步前

SomeAbstractGoogleJsonClient.Builder builder = new SomeAbstractGoogleJsonClient.Builder(
AndroidHttp.newCompatibleTransport(), new GsonFactory(), credential);

假设您的应用中存在类似的代码。由于您只是从调用者线程发布了片段，因此很难说。

Answer 3

我的解决方案是使用

def convert_celsius_fahrenheit(celsius_value):
    return 9 / 5 * celsius_value + 32

def print_fahrenheit_value(celsius_value, fahrenheit_value):
    print("Centigrade temperature :", celsius_value)
    print("fahrenheit temperature :", fahrenheit_value)

所以我使用credential.setSelectedAccount(new Account(settings.getString(Constants.PREF_ACCOUNT_NAME, null), "com.example.myapplication"));代替setSelectedAccount

Answer 4

也许是一个远景，但也许是抱怨它为null的'名称'是应用程序名称？

为了创建服务，我最终得到了像这样的代码

HttpTransport transport = AndroidHttp.newCompatibleTransport();
JsonFactory jsonFactory = new JacksonFactory();

Nviewendpoint.Builder builder = new Nviewendpoint.Builder( transport, jsonFactory, null );  
builder.setApplicationName( appName );

请注意，我添加了'setApplicationName'（相对于我找到的示例）。

Answer 5

设置accountname对我来说不起作用，我必须设置selectedaccount，因为marco说。为了简化他的答案

   credential = GoogleAccountCredential.usingOAuth2(context, scopes);
    credential.setSelectedAccount(new Account("developer@gmail.com", "com.your.pakagename"));

Answer 6

在上面添加Vikas的答案 -

从Android 6.0（API级别23）开始，用户在应用运行时向应用授予权限，而不是在安装应用时授予权限。

这实际上取决于您所寻求的许可类型。对于Dangerous权限和权限组，您需要在运行时请求权限，并且仅在清单中指定它是不够的。

要查看危险权限和群组 - https://developer.android.com/guide/topics/security/permissions.html#perm-groups

正如您所见，联系人就是其中之一 -

READ_CONTACTS
WRITE_CONTACTS
GET_ACCOUNTS

要解决此问题，您需要在运行时请求权限。怎么做？ - https://developer.android.com/training/permissions/requesting.html

Google端点方法不断返回“名称不能为空”的异常

6 个答案: