我正在尝试使用以下代码使用REST API写入云存储:
public static void insertData() {
try {
StorageObject st = new StorageObject();
//create the media object
Media m = new Media();
String content = "hi! this is a test";
m.setData(Base64.encodeBase64String(content.getBytes()));
m.setContentType("text/html");
st.setMedia(m);
//this gets me the credential, works for other APIs but not cloud storage
Storage storage = RequestBuilder.buildStorage();
//Create the insert and execute
Insert insert = storage.objects().insert("mybucket", st);
insert.execute();
} catch (IOException e) {
log.severe(e.getMessage());
}
}
这是我根据REST API的ACL条目:
"kind": "storage#bucketAccessControls",
"items": [
{
"kind": "storage#bucketAccessControl",
"id": "gammeprediction/allUsers",
"selfLink": "https://www.googleapis.com/storage/v1beta1/b/gammeprediction/acl/allUsers",
"bucket": "mybucket",
"entity": "allUsers",
"role": "OWNER"
}]
这就是我获得凭证的方式:
private static Credential authorize() {
GoogleCredential credential = null;
//load properties
Properties appProperties = new Properties();
appProperties.load(RequestBuilder.class
.getResourceAsStream("/app.properties"));
// creates an authorization with the key and service account given
InputStream is = RequestBuilder.class.getResourceAsStream("/"
+ appProperties.getProperty("app.keyFileName"));
PrivateKey pk;
try {
pk = PrivateKeys.loadFromKeyStore(KeyStore.getInstance("PKCS12"),
is, "notasecret", "privatekey", "notasecret");
credential = new GoogleCredential.Builder()
.setTransport(HTTP_TRANSPORT)
.setJsonFactory(JSON_FACTORY)
.setServiceAccountId(
appProperties
.getProperty("app.serviceAccount"))
.setServiceAccountPrivateKey(pk)
.setServiceAccountScopes(PredictionScopes.PREDICTION,
DriveScopes.DRIVE, StorageScopes.DEVSTORAGE_FULL_CONTROL).build();
return credential;
}
bucket上的权限是所有用户的OWNER,但我仍然收到403 Forbidden"Access not configured"错误。可能出了什么问题?
一旦JSON API普遍可用,此逻辑将起作用。
然而,目前JSON API处于有限预览中。由于未知用户不被视为有限预览的成员,因此目前不可能通过REST API进行完全匿名的查询。相反,在连接时,您必须至少提供一个列入白名单的API密钥。如果您没有提供进一步的身份信息,您将被视为匿名用户。或者,更进一步,您可以使用OAuth2凭据来将其视为注册用户。有关更多信息,请参阅:https://developers.google.com/storage/docs/json_api/
这是GWT RequestBuilder吗?不幸的是,我并不完全熟悉它的用途。如果有帮助的话,下面是一个使用Google API Java客户端使用API密钥建立连接的示例:https://code.google.com/p/google-api-java-client/wiki/OAuth2#Unauthenticated_access
此外,对setData()的调用似乎正在传递一个非base64的字符串,该字符串将失败。