Tika 简明教程
TIKA - Extracting JAR File
下面给出了从 Java 归档 (jar) 文件中提取内容和元数据的程序 −
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));
}
}
}
将上述代码保存为 PackageParse.java ,并使用以下命令从命令提示符编译它 −
javac PackageParse.java
java PackageParse
下面给出了 Example.java 的快照,它位于包内。
jar 文件具有以下属性 −
在执行上述程序后,它将给你以下输出 −
Output −
Contents of the document:
META-INF/MANIFEST.MF
tutorialspoint/tika/examples/Example.class
Metadata of the document:
Content-Type: application/zip