java库从文件内容中查找mime类型

使用Apachetika进行内容检测。请在下面找到链接。http://tika.apache.org/0.8/detection.html。我们有很多jar依赖项，当您使用Maven构建Tika时可以找到

        ByteArrayInputStream bai = new ByteArrayInputStream(pByte);        ContentHandler contenthandler = new BodyContentHandler();        metadata metadata = new metadata();        Parser parser = new AutoDetectParser();        try {   parser.parse(bai, contenthandler, metadata);        } catch (IOException e) {   // TODO Auto-generated catch block   e.printStackTrace();        } catch (SAXException e) {   // TODO Auto-generated catch block   e.printStackTrace();        } catch (TikaException e) {   // TODO Auto-generated catch block   e.printStackTrace();        }        System.out.println("Mime: " + metadata.get(metadata.CONTENT_TYPE));        return metadata.get(metadata.CONTENT_TYPE);