Amazon Web Services S3 API Java Client : update file object key with correct content type

By default the uploaded file content type is :
application/x-www-form-urlencoded; charset=utf-8

To change this you can do something like this :

1. static AmazonS3 s3Client = new AmazonS3Client(new ProfileCredentialsProvider());
3. public void validateKeyContentType(String key) {
4.         try {
5.             ObjectMetadata metadata = generateCorrectContentTypeObjMetaFromKeyName(key);
6.             
7.             final CopyObjectRequest request = new CopyObjectRequest(bucket, key, bucket, key).withSourceBucketName(bucket)
8.                 .withSourceKey(key)
9.                 .withNewObjectMetadata(metadata).withCannedAccessControlList(CannedAccessControlList.PublicRead);
10.             s3Client.copyObject(request);
11.         } catch (Exception exception) {
12.             LOG.info(exception.getMessage());
13.         }
14.     }
15. public ObjectMetadata generateCorrectContentTypeObjMetaFromKeyName(String key){
16.         ObjectMetadata metadata = new ObjectMetadata();
17.         String contentType = getFileContentTypeFromFileName(key);
18.         
19.         LOG.log(Level.INFO, "Setting content type : " + contentType);
20.         metadata.setContentType(contentType);
21.         return metadata;
22.     }
23. /*
24. These method takes some argument like "bucket1uploads/file100.mp4" and returns it's content type "video/mp4" by parsing the text (javax.activation)
25. */
26.     public static String getFileContentTypeFromFileName(String filePath) {
27. //javax.activation is too old and misses these content types
28.         MimetypesFileTypeMap ftmp = new MimetypesFileTypeMap();
29.         ftmp.addMimeTypes("audio/mp3 mp3 MP3");
30.         ftmp.addMimeTypes("video/mp4 mp4 MP4");
31.         ftmp.addMimeTypes("video/mkv mkv MKV");
32.         ftmp.addMimeTypes("video/webm webm WEBM");
33.         ftmp.addMimeTypes("video/flv flv FLV");
34.         ftmp.addMimeTypes("video/x-flv x-flv X-FLV");
35.         return ftmp.getContentType(filePath);
36.     }