Foxit PDF SDK（Linux版）

public class pdf2image {


    private static String key = "";
    private static String sn = "";
    private static String output_path = "../output_files/pdf2image/";
    private static String input_path = "../input_files/";
    private static String input_file = input_path + "AboutFoxit.pdf";
    private static String[] support_image_extends = {".bmp", ".jpg", ".jpeg", ".png", ".jpx", ".jp2"};
	private static String[] support_multi_image = {".tif", ".tiff"};

    public static void main(String[] args) throws PDFException {

        createResultFolder(output_path);

        int error_code = Library.initialize(sn, key);
        if (error_code != e_ErrSuccess) {
            System.out.println("Library Initialize Error: " + error_code);
            return;
        }
        PDFDoc doc = new PDFDoc(input_file);
        error_code = doc.load(null);
        if (error_code != e_ErrSuccess) {
            System.out.println("The Doc " + input_file + " Error: " + error_code);
            return;
        }

        Image image = new Image();
        int nPageCount = doc.getPageCount();
        for (int i = 0; i < nPageCount; i++) {
            PDFPage page = doc.getPage(i);
            // Parse page.
            page.startParse(e_ParsePageNormal, null, false);

            int width = (int) page.getWidth();
            int height = (int) page.getHeight();
            Matrix2D matrix = page.getDisplayMatrix(0, 0, width, height, page.getRotation());

            // Prepare a bitmap for rendering.

            Bitmap bitmap = new Bitmap(width, height, e_DIBArgb, null, 0);
            bitmap.fillRect(0xFFFFFFFF, null);

            // Render page
            Renderer render = new Renderer(bitmap, false);
            render.startRender(page, matrix, null);
            image.addFrame(bitmap);
            for (int j = 0; j < support_image_extends.length; j++) {
                String extend = support_image_extends[j];
                Save2Image(bitmap, i, extend);
            }
        }
        for (int j = 0; j < support_multi_image.length; j++) {
            String extend = support_multi_image[j];
            Save2Image(image, extend);
        }

        Library.release();
    }

    private static void createResultFolder(String output_path) {
        File myPath = new File(output_path);
        if (!myPath.exists()) {
            myPath.mkdir();
        }
    }

    private static void Save2Image(Bitmap bitmap, int nPageIndex, String sExt) throws PDFException {
        Image image = new Image();
        image.addFrame(bitmap);
        String s = "AboutFoxit_" + nPageIndex;
        s = output_path + s + sExt;
        image.saveAs(s);

		System.out.println("Save page " + nPageIndex + " into a picture of " + sExt + " format.");
    }

	private static void Save2Image(Image image, String sExt) throws PDFException {
        String s = "AboutFoxit";
        s = output_path + s + sExt;
        image.saveAs(s);

		System.out.println("Save pdf file into a picture of " + sExt + " format.");
    }
}