org.apache.poi.examples.ss.LoadEmbedded Maven / Gradle / Ivy
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this work for additional information regarding copyright ownership.
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package org.apache.poi.examples.ss;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.EncryptedDocumentException;
import org.apache.poi.hslf.usermodel.HSLFSlideShow;
import org.apache.poi.hssf.usermodel.HSSFObjectData;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
import org.apache.poi.openxml4j.opc.PackagePart;
import org.apache.poi.poifs.filesystem.DirectoryNode;
import org.apache.poi.poifs.filesystem.Entry;
import org.apache.poi.sl.usermodel.SlideShow;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.xmlbeans.XmlException;
/**
* Loads embedded resources from Workbooks. Code taken from the website:
* https://poi.apache.org/spreadsheet/quick-guide.html#Embedded
*/
@SuppressWarnings({"java:S106","java:S4823"})
public final class LoadEmbedded {
private LoadEmbedded() {}
public static void main(String[] args) throws IOException, EncryptedDocumentException, OpenXML4JException, XmlException {
Workbook wb = WorkbookFactory.create(new File(args[0]));
loadEmbedded(wb);
}
public static void loadEmbedded(Workbook wb) throws IOException, InvalidFormatException, OpenXML4JException, XmlException {
if (wb instanceof HSSFWorkbook) {
loadEmbedded((HSSFWorkbook)wb);
}
else if (wb instanceof XSSFWorkbook) {
loadEmbedded((XSSFWorkbook)wb);
}
else {
throw new IllegalArgumentException(wb.getClass().getName());
}
}
public static void loadEmbedded(HSSFWorkbook workbook) throws IOException {
for (HSSFObjectData obj : workbook.getAllEmbeddedObjects()) {
//the OLE2 Class Name of the object
String oleName = obj.getOLE2ClassName();
switch (oleName) {
case "Worksheet": {
DirectoryNode dn = (DirectoryNode) obj.getDirectory();
HSSFWorkbook embeddedWorkbook = new HSSFWorkbook(dn, false);
embeddedWorkbook.close();
break;
}
case "Document": {
DirectoryNode dn = (DirectoryNode) obj.getDirectory();
HWPFDocument embeddedWordDocument = new HWPFDocument(dn);
embeddedWordDocument.close();
break;
}
case "Presentation": {
DirectoryNode dn = (DirectoryNode) obj.getDirectory();
SlideShow embeddedSlieShow = new HSLFSlideShow(dn);
embeddedSlieShow.close();
break;
}
default:
if (obj.hasDirectoryEntry()) {
// The DirectoryEntry is a DocumentNode. Examine its entries to find out what it is
DirectoryNode dn = (DirectoryNode) obj.getDirectory();
for (Entry entry : dn) {
//System.out.println(oleName + "." + entry.getName());
}
} else {
// There is no DirectoryEntry
// Recover the object's data from the HSSFObjectData instance.
byte[] objectData = obj.getObjectData();
}
break;
}
}
}
public static void loadEmbedded(XSSFWorkbook workbook) throws IOException, InvalidFormatException,
OpenXML4JException, XmlException {
for (PackagePart pPart : workbook.getAllEmbeddedParts()) {
String contentType = pPart.getContentType();
switch (contentType) {
case "application/vnd.ms-excel":
// Excel Workbook - either binary or OpenXML
try (InputStream stream = pPart.getInputStream()) {
HSSFWorkbook embeddedWorkbook = new HSSFWorkbook(stream);
embeddedWorkbook.close();
}
break;
case "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet":
// Excel Workbook - OpenXML file format
try (InputStream stream = pPart.getInputStream()) {
XSSFWorkbook embeddedWorkbook = new XSSFWorkbook(stream);
embeddedWorkbook.close();
}
break;
case "application/msword":
// Word Document - binary (OLE2CDF) file format
try (InputStream stream = pPart.getInputStream()) {
HWPFDocument document = new HWPFDocument(stream);
document.close();
}
break;
case "application/vnd.openxmlformats-officedocument.wordprocessingml.document":
// Word Document - OpenXML file format
try (InputStream stream = pPart.getInputStream()) {
XWPFDocument document = new XWPFDocument(stream);
document.close();
}
break;
case "application/vnd.ms-powerpoint":
// PowerPoint Document - binary file format
try (InputStream stream = pPart.getInputStream()) {
HSLFSlideShow slideShow = new HSLFSlideShow(stream);
slideShow.close();
}
break;
case "application/vnd.openxmlformats-officedocument.presentationml.presentation":
// PowerPoint Document - OpenXML file format
try (InputStream stream = pPart.getInputStream()) {
XMLSlideShow slideShow = new XMLSlideShow(stream);
slideShow.close();
}
break;
default:
// Any other type of embedded object.
System.out.println("Unknown Embedded Document: " + contentType);
try (InputStream inputStream = pPart.getInputStream()) {
}
break;
}
}
}
}