使用Apache POI從文檔中獲取圖像

Question

我正在使用Apache Poi從docx讀取圖像。

這是我的代碼：

enter code here

public Image ReadImg(int imageid) throws IOException {
    XWPFDocument doc = new XWPFDocument(new FileInputStream("import.docx"));
    BufferedImage jpg = null;
    List<XWPFPictureData> pic = doc.getAllPictures();
    XWPFPictureData pict = pic.get(imageid);
    String extract = pict.suggestFileExtension();
    byte[] data = pict.getData();
    //try to read image data using javax.imageio.* (JDK 1.4+)
    jpg = ImageIO.read(new ByteArrayInputStream(data));
    return jpg;
}

它會正確讀取圖像，但順序不正確。

例如，如果文檔包含

image1.jpeg image2.jpeg image3.jpeg image4.jpeg image5.jpeg

它讀

image4 image3 image1 image5 image2

你能幫我解決嗎？

我想按順序閱讀圖像。

謝謝，Sithik

Answer 1

public static void extractImages(XWPFDocument docx) {
    try {

        List<XWPFPictureData> piclist = docx.getAllPictures();
        // traverse through the list and write each image to a file
        Iterator<XWPFPictureData> iterator = piclist.iterator();
        int i = 0;
        while (iterator.hasNext()) {
            XWPFPictureData pic = iterator.next();
            byte[] bytepic = pic.getData();
            BufferedImage imag = ImageIO.read(new ByteArrayInputStream(bytepic));
            ImageIO.write(imag, "jpg", new File("D:/imagefromword/" + pic.getFileName()));
            i++;
        }

    } catch (Exception e) {
        System.exit(-1);
    }

}