kristofer gist felülvizsgálása . Revízióhoz ugrás
2 files changed, 91 insertions
s3example.java(fájl létrehozva)
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| 1 | + | import com.amazonaws.services.s3.AmazonS3; | |
| 2 | + | import com.amazonaws.services.s3.AmazonS3ClientBuilder; | |
| 3 | + | import com.amazonaws.services.s3.model.*; | |
| 4 | + | import java.io.File; | |
| 5 | + | ||
| 6 | + | public class S3Examples { | |
| 7 | + | ||
| 8 | + | private final AmazonS3 s3 = AmazonS3ClientBuilder.defaultClient(); | |
| 9 | + | ||
| 10 | + | // Create an S3 bucket | |
| 11 | + | public void createBucket(String bucketName) { | |
| 12 | + | s3.createBucket(bucketName); | |
| 13 | + | } | |
| 14 | + | ||
| 15 | + | // Upload an object to S3 | |
| 16 | + | public void uploadObject(String bucketName, String key, File file) { | |
| 17 | + | s3.putObject(bucketName, key, file); | |
| 18 | + | } | |
| 19 | + | ||
| 20 | + | // Download an object from S3 | |
| 21 | + | public void downloadObject(String bucketName, String key, File file) { | |
| 22 | + | s3.getObject(new GetObjectRequest(bucketName, key), file); | |
| 23 | + | } | |
| 24 | + | ||
| 25 | + | // List objects in a bucket | |
| 26 | + | public ObjectListing listObjects(String bucketName) { | |
| 27 | + | return s3.listObjects(bucketName); | |
| 28 | + | } | |
| 29 | + | ||
| 30 | + | // Generate pre-signed URL to share an S3 object | |
| 31 | + | public URL generatePresignedUrl(String bucketName, String key) { | |
| 32 | + | Date expiration = new Date(); | |
| 33 | + | long expTimeMillis = expiration.getTime(); | |
| 34 | + | expTimeMillis += 1000 * 60 * 60; // Add 1 hour. | |
| 35 | + | expiration.setTime(expTimeMillis); | |
| 36 | + | ||
| 37 | + | GeneratePresignedUrlRequest generatePresignedUrlRequest = | |
| 38 | + | new GeneratePresignedUrlRequest(bucketName, key) | |
| 39 | + | .withMethod(HttpMethod.GET) | |
| 40 | + | .withExpiration(expiration); | |
| 41 | + | ||
| 42 | + | return s3.generatePresignedUrl(generatePresignedUrlRequest); | |
| 43 | + | } | |
| 44 | + | } | |
| 45 | + | // The key steps are: | |
| 46 | + | ||
| 47 | + | // 1. Create an S3Client object to interact with S3 | |
| 48 | + | // 2. Call createBucket() to create a new S3 bucket | |
| 49 | + | // 3. Upload objects using putObject(), specifying bucket name, key, and file | |
| 50 | + | // 4. Download objects using getObject(), specifying bucket name, key, and target file | |
| 51 | + | // 5. List objects in a bucket using listObjects() | |
| 52 | + | // 6. Generate a pre-signed URL using generatePresignedUrl() by specifying bucket, | |
| 53 | + | // key, expiration date, and HTTP method. | |
| 54 | + | ||
| 55 | + | // The pre-signed URL allows temporary access to private S3 objects without requiring AWS credentials. | |
| 56 | + | // The URL is only valid until the specified expiration date/time. | |
s3example.py(fájl létrehozva)
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| 1 | + | import boto3 | |
| 2 | + | from botocore.exceptions import ClientError | |
| 3 | + | ||
| 4 | + | s3 = boto3.client('s3') | |
| 5 | + | ||
| 6 | + | # Create a bucket | |
| 7 | + | bucket_name = 'my-bucket' | |
| 8 | + | location = {'LocationConstraint':'us-east-1'} | |
| 9 | + | s3.create_bucket(Bucket=bucket_name, CreateBucketConfiguration=location) | |
| 10 | + | ||
| 11 | + | # Upload an object to bucket | |
| 12 | + | filename = 'data.csv' | |
| 13 | + | object_name = 'data/data.csv' | |
| 14 | + | s3.upload_file(filename, bucket_name, object_name) | |
| 15 | + | ||
| 16 | + | # List objects in bucket | |
| 17 | + | response = s3.list_objects(Bucket=bucket_name) | |
| 18 | + | for object in response['Contents']: | |
| 19 | + | print(object['Key']) | |
| 20 | + | ||
| 21 | + | # Download an object | |
| 22 | + | s3.download_file(bucket_name, object_name, 'data_download.csv') | |
| 23 | + | ||
| 24 | + | # Generate pre-signed URL to share an object | |
| 25 | + | url = s3.generate_presigned_url( | |
| 26 | + | ClientMethod='get_object', | |
| 27 | + | Params={'Bucket': bucket_name, 'Key': object_name}, | |
| 28 | + | ExpiresIn=3600) | |
| 29 | + | ||
| 30 | + | print(url) | |
| 31 | + | ||
| 32 | + | # This creates an S3 bucket, uploads a local CSV file to the bucket under object name 'data/data.csv', | |
| 33 | + | # lists all objects in the bucket, downloads the object to a local file, and generates a pre-signed URL | |
| 34 | + | # that allows temporary access to download the object for anyone with the URL. | |
| 35 | + | # The pre-signed URL expires after 3600 seconds (1 hour). | |
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