我正在尝试从 AppEngine 向 Google Datastore 插入数据,但出现错误:
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);
如何解决这个错误?
在我的例子中,下一个代码正在运行:
BigQuery bigquery = BigQueryOptions.newBuilder().setProjectId("XXXXX")
.setCredentials(
ServiceAccountCredentials.fromStream(new FileInputStream("key.json"))
).build().getService();
我在builder中设置了projectId。
我可以通过将以下环境变量设置为项目 id 来解决这个问题
GCLOUD_PROJECT
如果这不起作用试试
GCP_PROJECT
更多信息在这里 https://cloud.google.com/functions/docs/configuring/env-var