TIKA提取JAR文件
下麵給出的程序是用來從一個Java存檔(JAR)文件提取內容和元數據:
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.sax.BodyContentHandler; import org.apache.tika.parser.pkg.PackageParser; import org.xml.sax.SAXException; public class PackageParse { 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.jar")); ParseContext pcontext = new ParseContext(); //Package parser PackageParser packageparser = new PackageParser(); packageparser.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)); } } }
保存上述代碼為PackageParse.java,並通過使用下麵的命令從命令提示編譯:
javac PackageParse.java java PackageParse
在這裡,我們通過下麵的Example.java文件得到jar文件。
jar文件具有以下屬性:
執行上述程序後,將得到下麵的輸出。
輸出:
Contents of the document: META-INF/MANIFEST.MF yiibai/tika/examples/Example.class Metadata of the document: Content-Type: application/zip