S3 파일 업로드

/**
     * s3에 접속 - 사전을 업로드 한다.
     * @throws IOException
     */
    public void uploadDictionary(FileParameter parameter) throws IOException {
        String fileName = parameter.getDicName();
        String path = makePath();
        ByteArrayOutputStream  baos = new ByteArrayOutputStream();
        for(String s: parameter.getKeyword()){
            baos.write(s.getBytes(“UTF-8”));
            baos.write(‘\n’);
        }
        byte[] fileArray = baos.toByteArray();
        ObjectMetadata metadata = new ObjectMetadata();
        metadata.setContentType(“text/plain”);
        metadata.setContentEncoding(“UTF-8”);
        metadata.setContentLength(fileArray.length);
       PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName+path, “bak_“+fileName, new ByteArrayInputStream(fileArray) , metadata);
       amazonS3.putObject(putObjectRequest);
       if(amazonS3.doesObjectExist(bucketName+path,“bak_“+fileName)){
        renameDictionary(fileName);
       }
    }