如何使用java從HTML文件中提取內容?

在Java程式設計中，如何使用java從HTML文件中提取內容？

專案的目錄結構如下 -

Tika的工具包可從以下網址下載：http://tika.apache.org/download.html ，只下載：tika-app-1.16.jar 和 tika-server-1.16.jar 。

以下是使用java從HTML文件中提取內容的程式 -

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 ExtractContentFromHTMLDoc {
    public static void main(String[] args) throws IOException, SAXException, TikaException {

        // detecting the file type
        BodyContentHandler handler = new BodyContentHandler();

        Metadata metadata = new Metadata();
        FileInputStream inputstream = new FileInputStream(new File("htmlExample.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));
        }
    }
}

原檔案：htmlExample.html 的內容如下 -

執行上面範例程式碼，得到以下結果 -

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/F:/worksp/javaexamples/libs/tika_libs/tika-app-1.16.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/F:/worksp/javaexamples/libs/tika_libs/tika-server-1.16.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
Contents of the document:    編號    姓名    薪水    職位
    1000    李小雙    9800    移動開發工程師
    1001    蘇小牛    9200    自由職業
    1002    王中達    14800    技術經理


Metadata of the document:
Content-Encoding:   UTF-8
Content-Type:   text/html; charset=UTF-8