Upload image to S3

upload.java

		AmazonS3 s3 = new AmazonS3Client(new BasicAWSCredentials("userName", "password"));
		s3.setEndpoint("s3-ap-southeast-1.amazonaws.com");
		
		ObjectMetadata metadata = new ObjectMetadata();
		metadata.setContentType("image/jpeg");
		PutObjectRequest req = new PutObjectRequest("my-bucket", "test.jpg", new FileInputStream("/Users/user/images/test.jpg"), metadata);
		req.withCannedAcl(CannedAccessControlList.PublicRead);
		req.withStorageClass(StorageClass.ReducedRedundancy);
		PutObjectResult res = s3.putObject(req);
		System.out.println(res.getContentMd5());