标签: gcloud-java

我试图在我的播放scala服务(Play v2.5.7)中使用谷歌云数据存储,因为我google-cloud在build.sbt中添加了依赖项

"com.google.cloud" % "google-cloud" % "0.4.0",

Run Code Online (Sandbox Code Playgroud)

没有依赖项,服务器启动正常.但是,添加依赖项后,播放服务器启动会出错:

[info] Loading global plugins from /<redacted>/.sbt/0.13/plugins
[info] Loading project definition from /<redacted>/dev/auth-svc/project
[info] Set current project to authsvc (in build file:/<redacted>/auth-svc/)

--- (Running the application, auto-reloading is enabled) ---

java.lang.NullPointerException
        at io.netty.channel.group.DefaultChannelGroup.add(DefaultChannelGroup.java:146)
        at play.core.server.NettyServer.bind(NettyServer.scala:140)
        at play.core.server.NettyServer.play$core$server$NettyServer$$bindChannel(NettyServer.scala:224)
        at play.core.server.NettyServer$$anonfun$1.apply(NettyServer.scala:216)
        at play.core.server.NettyServer$$anonfun$1.apply(NettyServer.scala:216)
        at scala.Option.map(Option.scala:146)
        at play.core.server.NettyServer.<init>(NettyServer.scala:216)
        at play.core.server.NettyServerProvider.createServer(NettyServer.scala:279)
        at play.core.server.NettyServerProvider.createServer(NettyServer.scala:278)
        at play.core.server.DevServerStart$$anonfun$mainDev$1.apply(DevServerStart.scala:235)
        at play.core.server.DevServerStart$$anonfun$mainDev$1.apply(DevServerStart.scala:65)
        at play.utils.Threads$.withContextClassLoader(Threads.scala:21)
        at play.core.server.DevServerStart$.mainDev(DevServerStart.scala:64)
        at play.core.server.DevServerStart$.mainDevHttpMode(DevServerStart.scala:54)
        at play.core.server.DevServerStart.mainDevHttpMode(DevServerStart.scala)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at …

我正在尝试从AppEngine向Google Datastore插入数据,但我收到错误消息:

java.lang.IllegalArgumentException: A project ID is required for this service but could not be determined from the builder or the environment.  Please set a project ID using the builder.
    at com.google.common.base.Preconditions.checkArgument(Preconditions.java:92)
    at com.google.cloud.ServiceOptions.<init>(ServiceOptions.java:324)
    at com.google.cloud.datastore.DatastoreOptions.<init>(DatastoreOptions.java:85)
    at com.google.cloud.datastore.DatastoreOptions.<init>(DatastoreOptions.java:32)
    at com.google.cloud.datastore.DatastoreOptions$Builder.build(DatastoreOptions.java:75)
    at com.google.cloud.datastore.DatastoreOptions.defaultInstance(DatastoreOptions.java:123)

这是我的代码:

Datastore datastore = DatastoreOptions.defaultInstance().service();     
             KeyFactory keyFactory = datastore.newKeyFactory().kind("keyKind"); 
             Key key = keyFactory.newKey("keyName"); 
             Entity entity = Entity.builder(key) 
                 .set("name", "John Doe") 
                 .set("age", 30) 
                 .set("access_time", DateTime.now()) 
                 .build(); 
             datastore.put(entity); 

我该如何解决这个错误？

嗨，我遇到了Google Cloud的Java SDK库问题。

我需要查询Dialogflow V2 API，并且正在使用此SDK（https://github.com/GoogleCloudPlatform/google-cloud-java/tree/master）

我已按照说明进行操作，以将GOOGLE_APPLICATION_CREDENTIALS设置为环境变量。

我做了几次尝试（我使用的是Mac）：

export GOOGLE_APPLICATION_CREDENTIALS=path/to/my.json

不起作用

推杆

export GOOGLE_APPLICATION_CREDENTIALS=path/to/my.json

在.bash_profile中

不起作用

在我的Java代码中：

System.setProperty("GOOGLE_APPLICATION_CREDENTIALS", "/path/to/my.json");
GoogleCredential credential = GoogleCredential.getApplicationDefault();

不起作用

String jsonPath = "/path/to/my.json";
GoogleCredentials credentials = GoogleCredentials.fromStream(new FileInputStream(jsonPath));
Storage storage = StorageOptions.newBuilder().setCredentials(credentials).build().getService();

不起作用

通过“ Maven构建>环境>新变量”将GOOGLE_APPLICATION_CREDENTIALS作为Eclipse中的环境变量，然后重新启动IDE

不起作用

总是发生相同的错误：

An error occurred during Dialogflow http request: The Application Default Credentials are not available. They are available if running in Google Compute Engine. Otherwise, the environment variable GOOGLE_APPLICATION_CREDENTIALS must be defined pointing to a file defining …

我正在尝试使用GQL从数据存储区中获取一些数据.

当我SELECT * FROM Kind提出请求时,它可以正常工作,我会收到数据.

但是,当我尝试:

SELECT * FROM kind where num < 1234

我得到一个不允许的字面错误.

我甚至尝试用引号做到这一点:

SELECT * FROM kind where num < '1234'

但我得到了同样的错误.

有没有人遇到过这个？

这是代码:

Query<Entity> query = Query.gqlQueryBuilder(Query.ResultType.ENTITY,             
          "SELECT * FROM " + kind + " WHERE num < '100'"
          ).build();
  QueryResults<Entity> results = datastore.run(query);
  while (results.hasNext()) {
    Entity result = results.next();
   myList.add(result.getString("num"));