TIKA提取JAR文件

下面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)); } } }

保存上述代碼爲PackageParse.java，並通過使用下面的命令從命令提示編譯：

javac PackageParse.java
java PackageParse

在這裏，我們通過下面的Example.java文件得到jar文件。

JAVA

jar文件具有以下屬性：

JAR

執行上述程序後，將得到下面的輸出。

輸出:

Contents of the document:
META-INF/MANIFEST.MF
yiibai/tika/examples/Example.class

Metadata of the document:
Content-Type: application/zip

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