Java aws sdk upload file to s3




















Each client has its own connection pool resource that is released when the client is garbage collected. For best practices, explicitly close a client by calling the close method. Now we have the service client bean ready, which we can inject into a service and start uploading an object to S3 bucket with specified keyname. S3Client exposes S3Utilities object that can be used to create the utilities class that heps us with getting URL for a given S3 object.

We can compose a GetObjectRequest using builder pattern specifying the bucket name and key and then use s3 service client to get the object and save it into a byte array or file. If object content is too big, you can directly stream it into a file without loading inmemory. No need to specify the version for service client libraries.

Value; import org. Bean; import org. Viewed times. Thank you Damien. Improve this question. Damien Damien 3, 11 11 gold badges 68 68 silver badges bronze badges.

I'm not as confident as you are, on that point. The error message suggests that you need to be passing a region for your bucket to a constructor, somewhere I am using US Standard for the bucket location.

Would you recommend setting a specific bucket. Haa trust me on your concerns but this has been running in a production environment now for near 2 years with various upgrades to the library - this is the first update to break it — Damien.

Oh, I don't doubt that the wiring was correct at some point, but it isn't unheard-of for things to work as expected "by accident" until somebody somewhere removes an assumption you were relying on. Unfortunately, I rarely use the SDKs -- my expertise is primary from working directly with the API endpoints and understanding what they expect and return, and that's the reason I feel reasonably confident that this is, somehow, endpoint-selection-related.

If you have a support contract, the request ID and extended request ID will probably enable support to trace the request and give you a hint. Add a comment. Active Oldest Votes. Improve this answer. First, we've set up a Region object. Set the region closest to where your users will be. Then, we've created an S3Client object and used its builder , passing the region, to instantiate it. Finally, to create a bucket, we'll need to pack everything in a request and fire that request using the S3Client instance.

To pack everything in a request, we call the builder of the CreateBucketRequest class and pass the bucket's name and region ID. Note : Amazon bucket names must be unique globally. Change the new-bucket name with another one. We've populated it with a random byte buffer. When we run this code, a new file named key will be uploaded to the bucket.

In addition to the previous classes, and in the same fashion, the DeleteBucketRequest class is used to send a request for the deletion of a bucket.

The same as before, we set up an S3Client with the Region instance and pass the bucket name. Finally, we instantiate a DeleteBucketRequest object with the bucket info and run the deleteBucket method from the S3Client class.



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