Google Drive.Permissions.update 开始失败"500 OK"异常

Question

我使用以下类型的Java代码（在AppEngine中）来转移Google云端硬盘中文件的所有权。突然，这开始失败，并出现服务器"500 OK"错误。有什么变化吗，或者可能是什么原因？

// first add new owner as "writer"
Permission newPermission= new Permission();
newPermission.setValue(newOwnerEmail);
newPermission.setType("user");
newPermission.setRole("writer");
Insert insert = service.permissions().insert(fileId, newPermission);
newPermission = insert.execute();
// then transfer ownsership
newPermission.setRole("owner");
newPermission.setValue(newOwnerEmail);
Update update = drive.permissions().update(fileId, newPermission.getId(), newPermission);
update.setTransferOwnership(true);
update.execute(); 

异常消息就是这样，并不能说明太多...？

500 OK
{
  "code" : 500,
  "message" : null
}
at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:145)
at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113)
at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest$1.interceptResponse(AbstractGoogleClientRequest.java:312)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1045)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:410)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:343)
at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:460)
etc...

Answer 1

好的，

我找到了这些修复的解决方案：

1） 将云端硬盘 API 库更新到 1.17.0

2） 准备所有权转让时，立即将新的所有者权限角色设置为"所有者"。在早期的 API 版本中，它必须首先是"编写器"。

以下是更正的代码片段：

// first add new permission as "owner"
Permission newPermission= new Permission();
newPermission.setValue(newOwnerEmail);
newPermission.setType("user");
newPermission.setRole("owner");
Insert insert = service.permissions().insert(fileId, newPermission);
newPermission = insert.execute();
// then transfer ownsership
newPermission.setValue(newOwnerEmail);
Update update = drive.permissions().update(fileId, newPermission.getId(), newPermission);
update.setTransferOwnership(true);
update.execute();