Examples of org.apache.tika.detect.Detector.detect()

org.apache.tika.detect.Detector.detect()
Detects the content type of the given input document. Returns application/octet-stream if the type of the document can not be detected.
If the document input stream is not available, then the first argument may be null. Otherwise the detector may read bytes from the start of the stream to help in type detection. The given stream is guaranteed to support the {@link InputStream#markSupported() mark feature} and the detectoris expected to {@link InputStream#mark(int) mark} the stream beforereading any bytes from it, and to {@link InputStream#reset() reset}the stream before returning. The stream must not be closed by the detector.
The given input metadata is only read, not modified, by the detector. @param input document input stream, or null @param metadata input metadata for the document @return detected media type, or application/octet-stream @throws IOException if the document input stream could not be read

       m.add(Metadata.RESOURCE_NAME_KEY, "excel.xlsb");
       
       // Should be detected correctly
       MediaType type = null;
       try {
          type = detector.detect(input, m);
          assertEquals("application/vnd.ms-excel.sheet.binary.macroenabled.12", type.toString());
       } finally {
          input.close();
       }

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       m.add(Metadata.RESOURCE_NAME_KEY, "excel_95.xls");
       
       // Should be detected correctly
       MediaType type = null;
       try {
          type = detector.detect(input, m);
          assertEquals("application/vnd.ms-excel", type.toString());
       } finally {
          input.close();
       }

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      TikaInputStream stream = getTestFile(file);
      Detector detector = new DefaultDetector();
      try {
         assertEquals(
                 MediaType.application("vnd.ms-tnef"),
                 detector.detect(stream, new Metadata()));
     } finally {
         stream.close();
     }
   }

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       m.add(Metadata.RESOURCE_NAME_KEY, "excel.xlsb");
       
       // Should be detected correctly
       MediaType type = null;
       try {
          type = detector.detect(input, m);
          assertEquals("application/vnd.ms-excel.sheet.binary.macroenabled.12", type.toString());
       } finally {
          input.close();
       }

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          String ct = metadata.get(org.apache.tika.metadata.HttpHeaders.CONTENT_TYPE);


          if (ct!=null) {
            return MediaType.parse(ct);
          } else {
            return detector.detect(inputStream, metadata);
          }
        }
      });
    }
  }

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          String ct = metadata.get(org.apache.tika.metadata.HttpHeaders.CONTENT_TYPE);


          if (ct!=null) {
            return MediaType.parse(ct);
          } else {
            return detector.detect(inputStream, metadata);
          }
        }
      });
    }
  }

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        InputStream stream = new ByteArrayInputStream(data.getBytes("UTF-8"));
        Writer writer = new StringWriter();
        ContentHandler contentHandler = new BodyContentHandler(writer);
        Metadata metadata = new Metadata();
        Detector contentTypeDetector = new DefaultDetector(classLoader);
        MediaType type = contentTypeDetector.detect(stream, metadata);
        assertEquals(type.toString(), "text/html");
        metadata.add(Metadata.CONTENT_TYPE, type.toString());
        ParseContext parseCtx = new ParseContext();
        parser.parse(stream, contentHandler, metadata, parseCtx);
        writer.flush();

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       m.add(Metadata.RESOURCE_NAME_KEY, "excel.xlsb");
       
       // Should be detected correctly
       MediaType type = null;
       try {
          type = detector.detect(input, m);
          assertEquals("application/vnd.ms-excel.sheet.binary.macroenabled.12", type.toString());
       } finally {
          input.close();
       }

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       m.add(Metadata.RESOURCE_NAME_KEY, "excel_95.xls");
       
       // Should be detected correctly
       MediaType type = null;
       try {
          type = detector.detect(input, m);
          assertEquals("application/vnd.ms-excel", type.toString());
       } finally {
          input.close();
       }

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        String cType = metadata.get(Metadata.CONTENT_TYPE);
        TikaConfig config = getConfig();
        if (cType == null) {
            Detector detector = config.getDetector();
            try {
                MediaType mediaType = detector.detect(is, metadata);
                MimeTypes types = config.getMimeRepository();
                MimeType mime = types.forName(mediaType.toString());
                metadata.set(Metadata.CONTENT_TYPE, mediaType.getSubtype());
                return mime.getExtension();
            } catch (IOException e) {

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