I'm trying to practice using AWS more and I'm at a point where I can generate a S3 bucket URL. Now that I have that set up I'm trying to put a document (file) into that URL. Is there any useful documentation or things I should know when I try to do that? I can't seem to find anything on the web for Java users. (maybe I'm just bad at searching idk). Thanks
There is AWS SDK for Java provided by Amazon
AWS SDK For Java
Example work with S3
AWS example of loading file to s3:
https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/examples-s3-objects.html#upload-object
and you would need a token to access you account resources from a java client more info here : https://aws.amazon.com/premiumsupport/knowledge-center/create-access-key/
Related
I am trying to make a lambda function which will store the image in S3 bucket using Java .
The issue is my whenever I am invoking the Lambda using Http API, it gives me Internal server error. I have tried to use simple code to upload the text file in s3 bucket as well However it is not working.
I have set up a IAM role for this Lambda with following permissions:-
LambdaBasicExecution
S3 full Access
CloudWatch Logs
However my Lambda Function is not able to trigger the S3 bucket.
It seems that there is some issue with the configuration.
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Answering if anyone face this issue like I faced:-
The issue was with Maven Dependency. I was using S3 SDK version which was picking up mismatch Object versions for other Aws SDKs and it was giving Internal Server Error.
How can we use minio storage as same as S3. Is there any need to change the code of java spring boot?. Previous codes are aws related. I don't want to change the code, But i want to access the storage from another source. Is that possible with minio.
I assume, that you are using the aws-java-sdk s3client. Therefore you just need to set the endpoint-configuration (for example http://localhost:9000, if minio runs on port 9000 on your local machine)
For more infos about the endpoint-configuration, you can look here
I am new to AWS. I want to access an S3 bucket from my android app in order to upload files stored in the Downloads folder of an android device. I have tried and done that following this tutorial. However, I do not want to have the access key ID and secret access key in my source code. I found that there may be a way to do this using AWS Cognito but I haven't found a guided tutorial yet. I am also open to using other ways to access S3 as long as I don't have to hardcode the secret keys. I have also found a few questions related to this on StackOverflow but they haven't been answered well.
Anything to point me in the right direction would be helpful.
Hardcoding your credentials in the mobile app is not a good approach.
what I will suggest, you must request your backend server for temporary credentials.
the backend will create an STS token for S3 with limited access and give it to you.
you can find more info in the below link
https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/prog-services-sts.html
AWS Cognito is the way to go. With an identity pool, you can send access_keys that allow you and your user to access your S3 bucket.
I know there are no clear step-by-step tutorials online, I had to figure it out myself a few weeks ago (react js and django backend).
The official docs helped me well. The authentification functions are not that complicated. You can also follow this tutorial for the aws set up process. Good luck!
One of the better approach for uploading file on S3 is using presigned url. You can create an API to generate presigned url for uploading files on S3.
Visit here to find how to do it - https://medium.com/#aidan.hallett/securing-aws-s3-uploads-using-presigned-urls-aa821c13ae8d
I wanted to know whether it is possible to perform S3 multipart upload using pre-signed Url using AWS java SDKs.
Unfortunately i am not able to get any clear answer for it, not sure whether it is supported or not.
Thanks in advance !!!
Have you had a chance to examine the documentation? You will want to presign a create multipart upload request. A related issue includes this comment https://github.com/aws/aws-sdk-java-v2/issues/203#issuecomment-663631708 which shows code from the relevant integration test.
Edited 7th June,14
My Android app needs to have a feature where clients can upload their files. I want AWS S3 as my storage. Moreover i dont want to use SECRET_KEY and ACCESS_KEY_ID on client side. What is the the best way to do this. Can someone provide the working code too ?
I read that i can request to AWS for a signed URL and then make client directly upload to that URL. How to achieve this ?
Maybe you can call AWS APIs in step 4.
And please check the AWS STS(Security Token Service) document, "Ways to Get Temporary Security Credentials" section.