Overview (SDK for Java)

If you have any questions during development, post them on the Issues page of GitHub.

In OBS, objects are basic data units that users can perform operations on. OBS Java SDK provides abundant APIs for object upload in the following methods:

• Streaming
• File-based
• Multipart
• Appendable
• Resumable
• Browser-based

The SDK supports the upload of objects whose size ranges from 0 KB to 5 GB. For streaming upload, appendable upload, and file-based upload, data to be uploaded cannot be larger than 5 GB. If the file is larger than 5 GB, multipart upload (where each part is smaller than 5 GB) is suitable. Browser-based upload allows files to be uploaded through a browser.

If you grant anonymous users the read permission for an object during the upload, anonymous users can access the object through a URL after the upload is complete. The object URL is in the format of https://bucket name.domain name/directory level/object name. If the object resides in the root directory of the bucket, its URL does not contain directory levels.