提取 HTML 文档（Extracting HTML Document）

下面给出了从HTML文档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.parser.html.HtmlParser;
import org.apache.tika.sax.BodyContentHandler;
import org.xml.sax.SAXException;
public class HtmlParse {
   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.html"));
      ParseContext pcontext = new ParseContext();
      //Html parser 
      HtmlParser htmlparser = new HtmlParser();
      htmlparser.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));  
      }
   }
}

将上面的代码保存为HtmlParse.java ，并使用以下命令从命令提示符编译它 -

javac HtmlParse.java
java HtmlParse 

下面给出了example.txt文件的快照。

HTML文档具有以下属性 -

如果执行上述程序，它将为您提供以下输出。

Output -

<b>Contents of the document:</b>
	Name	                     Salary	    age
	Ramesh Raman	             50000	    20
	Shabbir Hussein	             70000          25
	Umesh Raman	             50000	    30
	Somesh	                     50000	    35
<b>Metadata of the document:</b>
title:   HTML Table Header
Content-Encoding:   windows-1252
Content-Type:   text/html; charset = windows-1252
dc:title:   HTML Table Header