Java Amazon S3 writeStreamToS3File(AWSCredentials credentials, String bucketName, String key, ByteArrayOutputStream stream, String contentType, CannedAccessControlList acl)

Description

writeStreamToS3File - Write a given Stream to a specified S3 file, returing a pre-signed URL to the file.

License

Apache License

Parameter

Parameter	Description
credentials	- Credentials for accessing AWS Resources
bucketName	- The name of the bucket to write to.
key	- The key for the file to write.
stream	- The stream to be written to the file.
contentType	- Content type for the file.
acl	- Access Control List specifying file permissions.

Return

- A pre-signed URL to access the file contents - with a 15 minute expiration time.

Declaration

public static String writeStreamToS3File(AWSCredentials credentials, String bucketName, String key,
        ByteArrayOutputStream stream, String contentType, CannedAccessControlList acl) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import com.amazonaws.HttpMethod;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.CannedAccessControlList;

import com.amazonaws.services.s3.model.ObjectMetadata;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.Date;

public class Main {
    /**//from   www  .j ava  2 s . co m
     * writeStreamToS3File - Write a given Stream to a specified S3 file, returing a pre-signed URL to the file.  
     * 
      * @param credentials   - Credentials for accessing AWS Resources
      * @param bucketName   - The name of the bucket to write to.
      * @param key         - The key for the file to write.
      * @param stream      - The stream to be written to the file.
      * @param contentType   - Content type for the file.
      * @param acl         - Access Control List specifying file permissions.
      * @return            - A pre-signed URL to access the file contents - with a 15 minute expiration time.
      */
    public static String writeStreamToS3File(AWSCredentials credentials, String bucketName, String key,
            ByteArrayOutputStream stream, String contentType, CannedAccessControlList acl) {
        String result = "";
        AmazonS3Client conn = new AmazonS3Client(credentials);
        ObjectMetadata metadata = new ObjectMetadata();
        metadata.setContentType(contentType);
        metadata.setContentLength((long) stream.toByteArray().length);
        ByteArrayInputStream input = new ByteArrayInputStream(stream.toByteArray());
        conn.putObject(bucketName, key, (InputStream) input, metadata);
        conn.setObjectAcl(bucketName, key, acl);
        result = conn.generatePresignedUrl(bucketName, key, new Date(new Date().getTime() + 900000), HttpMethod.GET)
                .toString();
        return result;
    }
}