TIKA提取JAR文件 - Tika教程
下面给出的程序是用来从一个Java存档(JAR)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.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));
}
}
}
保存上述代码为PackageParse.java,并通过使用下面的命令从命令提示编译:
javac PackageParse.java
java PackageParse
在这里,我们通过下面的Example.java文件得到jar文件。
jar文件具有以下属性:
执行上述程序后,将得到下面的输出。
输出:
Contents of the document:
META-INF/MANIFEST.MF
yiibai/tika/examples/Example.class
Metadata of the document:
Content-Type: application/zip