How can I read an AWS S3 File with Java?

Question

I tried to read a file from AWS S3 to my java code:

  File file = new File("s3n://mybucket/myfile.txt");   FileInputStream fileInput = new FileInputStream(file); 

Then I got an error:

java.io.FileNotFoundException: s3n:/mybucket/myfile.txt (No such file or directory)     at java.io.FileInputStream.open(Native Method)     at java.io.FileInputStream.<init>(FileInputStream.java:146) 

Is there a way to open/read a file from AWS S3? Thanks a lot!

Answer 1

The 'File' class from Java doesn't understand that S3 exists. Here's an example of reading a file from the AWS documentation:

AmazonS3 s3Client = new AmazonS3Client(new ProfileCredentialsProvider());         S3Object object = s3Client.getObject(new GetObjectRequest(bucketName, key)); InputStream objectData = object.getObjectContent(); // Process the objectData stream. objectData.close();