下面给出的程序是用来从mp4文件提取内容和元数据:
import java.io.File; import java.io.FileInputStream; import java.io.IOException; import org.apache.tika.exception.TikaException; import org.apache.tika.metadata.Metadata; import org.apache.tika.parser.ParseContext; import org.apache.tika.parser.mp4.MP4Parser; import org.apache.tika.sax.BodyContentHandler; import org.xml.sax.SAXException; public class Mp4Parse { public static void main(final String[] args) throws IOException,SAXException, TikaException { //detecting the file type BodyContentHandler handler = new BodyContentHandler(); Metadata metadata = new Metadata(); FileInputStream inputstream = new FileInputStream(new File("example.mp4")); ParseContext pcontext = new ParseContext(); //Html parser MP4Parser MP4Parser = new MP4Parser(); MP4Parser.parse(inputstream, handler, metadata,pcontext); System.out.println("Contents of the document: :" + handler.toString()); System.out.println("Metadata of the document:"); String[] metadataNames = metadata.names(); for(String name : metadataNames) { System.out.println(name + ": " + metadata.get(name)); } } }
保存上述代码保存为JpegParse.java,并通过使用下面的命令从命令提示编译:
javac Mp4Parse.java java Mp4Parse
下面给出的是example.mp4的快照属性:
执行上述程序后,得到如下的输出
输出:
Contents of the document: Metadata of the document: dcterms:modified: 2014-01-06T12:10:27Z meta:creation-date: 1904-01-01T00:00:00Z meta:save-date: 2014-01-06T12:10:27Z Last-Modified: 2014-01-06T12:10:27Z dcterms:created: 1904-01-01T00:00:00Z date: 2014-01-06T12:10:27Z tiff:ImageLength: 360 modified: 2014-01-06T12:10:27Z Creation-Date: 1904-01-01T00:00:00Z tiff:ImageWidth: 640 Content-Type: video/mp4 Last-Save-Date: 2014-01-06T12:10:27Z