File Uploading, Deleting, listing

S3Main.java

/** Add the Given Dependency
  <dependency>
			<groupId>com.amazonaws</groupId>
			<artifactId>aws-java-sdk</artifactId>
			<version>1.11.163</version>
		</dependency>
*/
import java.io.IOException;
import java.io.InputStream;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.DeleteObjectsRequest;
import com.amazonaws.services.s3.model.ObjectListing;
import com.amazonaws.services.s3.model.PutObjectResult;
import com.amazonaws.services.s3.model.S3Object;

public class S3Main {
	/**
	 * Get Basic AWS Credentials
	 * @param accesskey
	 * @param secretkey
	 * @return
	 */
	public AWSCredentials getBasicAWSCredentials(String accesskey, String secretkey) {
		return new BasicAWSCredentials(accesskey, secretkey);
	}

	/**
	 * get AmazonS3
	 * 
	 * @return
	 */
	public AmazonS3 getAmazonS3() {
		return AmazonS3ClientBuilder.standard()
				.withCredentials(new AWSStaticCredentialsProvider(
						getBasicAWSCredentials("<AWS accesskey>", "<AWS secretkey>")))
				.withRegion(Regions.US_EAST_1).build();
	}

	/**
	 * upload On S3
	 * 
	 * @param bucketName
	 * @param fileName
	 * @param file
	 * @return
	 */
	public PutObjectResult uploadOnS3(String bucketName, String fileName, InputStream file) {
		return getAmazonS3().putObject(bucketName, fileName, file, null);
	}

	/**
	 * get All Objects
	 * 
	 * @param bucketName
	 * @return
	 */
	public ObjectListing getAllObjects(String bucketName) {
		return getAmazonS3().listObjects(bucketName);
	}

	/**
	 * download Object
	 * 
	 * @param bucketName
	 * @param fileName
	 * @return
	 */
	public S3Object downloadObject(String bucketName, String fileName) {
		return getAmazonS3().getObject(bucketName, fileName);
	}
	/**
	 * Delete Object
	 * @param bucketName
	 * @param fileName
	 */
	public void deleteObject(String bucketName, String fileName) {
		getAmazonS3().deleteObject(bucketName, fileName);
	}
	/**
	 * Delete Multiple file
	 * @param bucketName
	 * @param fileNames
	 */
	public void deleteMultipleObjects(String bucketName, String[] fileNames) {
		DeleteObjectsRequest delObjReq = new DeleteObjectsRequest(bucketName)
				  .withKeys(fileNames);
		getAmazonS3().deleteObjects(delObjReq);
		
	}

	public static void main(String[] args) throws IOException {
		S3Main s3Main = new S3Main();
		String bucketName = "<BUCKET_NAME>";
		String path = "<PATH_NAME>";
		// Get All Object On S3
		/*
		 * ObjectListing objectListing = s3Main.getAllObjects(bucketName); for
		 * (S3ObjectSummary os : objectListing.getObjectSummaries()) {
		 * System.out.println(os.getKey()); }
		 */
		// Uplaod File
		/*
		 * File initialFile = new File("C:\\Users\\13615\\Downloads\\qq.jpeg");
		 * InputStream targetStream = new FileInputStream(initialFile); PutObjectResult
		 * result = s3Main.uploadOnS3(bucketName, path+initialFile.getName(),
		 * targetStream); System.out.println(result.getContentMd5());
		 * targetStream.close();
		 */
		//Download Object
		/*S3Object s3object = s3Main.downloadObject(bucketName, path + "qq.jpeg");
		S3ObjectInputStream inputStream = s3object.getObjectContent();
		FileUtils.copyInputStreamToFile(inputStream, new File("E:\\ImageStore\\hello.jpeg"));*/
		
		//Delete Object
		/*s3Main.deleteObject(bucketName, path + "qq.jpeg");*/
		
		//Delete Multiple File
		/*String fileNames[] = {"<<filename1>>","<<filename2>>"};
		s3Main.deleteMultipleObjects(bucketName, fileNames);*/
	}

	

}