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20 package org.apache.poi.xssf.eventusermodel.examples;
22 import java.io.InputStream;
24 import org.apache.poi.openxml4j.opc.OPCPackage;
25 import org.apache.poi.poifs.crypt.temp.AesZipFileZipEntrySource;
26 import org.apache.poi.xssf.eventusermodel.XSSFReader;
27 import org.apache.poi.xssf.eventusermodel.XSSFReader.SheetIterator;
28 import org.apache.poi.xssf.usermodel.examples.LoadPasswordProtectedXlsx;
31 * An example that loads a password protected workbook and counts the sheets.
32 * The example highlights how to do this in streaming way.
34 * <li>The example demonstrates that all temp files are removed.
35 * <li><code>AesZipFileZipEntrySource</code> is used to ensure that temp files are encrypted.
38 @SuppressWarnings({"java:S106","java:S4823","java:S1192"})
39 public final class LoadPasswordProtectedXlsxStreaming {
41 private LoadPasswordProtectedXlsxStreaming() {}
43 public static void main(String[] args) throws Exception {
44 LoadPasswordProtectedXlsx.execute(args, LoadPasswordProtectedXlsxStreaming::printSheetCount);
47 private static void printSheetCount(final InputStream inputStream) throws Exception {
48 try (AesZipFileZipEntrySource source = AesZipFileZipEntrySource.createZipEntrySource(inputStream);
49 OPCPackage pkg = OPCPackage.open(source)) {
50 XSSFReader reader = new XSSFReader(pkg);
51 SheetIterator iter = (SheetIterator)reader.getSheetsData();
53 while(iter.hasNext()) {
57 System.out.println("sheet count: " + count);