Leggere file Word in Java con Apache POI
Apache POI è un'ottima libreria per visualizzare e manipolare file di MS Office.
Oggi vediamo come leggere file Word (DOC e DOCX).
Li specifico entrambi perchè richiedono parti di libreria e classi differenti.
Se usate Maven aggiungete queste dipendenze al pom.xml:
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.17</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-scratchpad</artifactId>
<version>3.17</version>
</dependency>Dopo aver compilato, avviate il programma con il codice di esempio qua sotto:
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.extractor.WordExtractor;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
public class Main {
public static void main(String[] args) {
try {
HWPFDocument doc = new HWPFDocument(new FileInputStream("test.doc"));
WordExtractor wex = new WordExtractor(doc);
System.out.println(wex.getText());
XWPFDocument docx = new XWPFDocument(new FileInputStream("test.docx"));
XWPFWordExtractor we = new XWPFWordExtractor(docx);
System.out.println(we.getText());
} catch (IOException ex) {
System.out.println(ex.getMessage());
}
}
}Come vedete abbiamo usato HWPFDocument per i DOC, e XWPFDocument per i DOCX.
Questo codice basico si limita a leggere il file indicato, e stamparne il contenuto.
Se volete estrapolare metadati e simili, viene consigliato l'uso di Apache Tika (ne abbiamo parlato qui).
Enjoy!
java apache poi apache tika ms office word doc docx hwpfdocument xwpfdocument
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