quickreference.jsp

来自「windows下PDF文档的开发包」· JSP 代码 · 共 95 行

<%@page import="java.io.*, 
		javax.servlet.*, 
		com.pdflib.pdflib" %><%
   /* $Id: quickreference.jsp,v 1.7.2.1 2003/09/03 12:24:26 rp Exp $
    *
    * quickreference.jsp 
    */

    int font, row, col, i;
    int manual, pages;
    final int maxrow=2, maxcol=2;
    int startpage = 1, endpage = 4;
    final float width = 500, height = 770;
    int pageno;
    String infile = "reference.pdf";
    /* This is where font/image/PDF input files live. Adjust as necessary. */
    String searchpath = "../data";
    byte[] buf;
    ServletOutputStream output;

    pdflib p;
    p = new pdflib();

    // Generate a PDF in memory; insert a file name to create PDF on disk
    if (p.open_file("") == -1) {
        System.err.println("Error: " + p.get_errmsg());
	System.exit(1);
    }

    p.set_parameter("SearchPath", searchpath);

    p.set_info("Creator", "quickreference.jsp");
    p.set_info("Author", "Rainer Ploeckl");
    p.set_info("Title", "quickreference (Java/JSP)");

    manual = p.open_pdi(infile, "", 0);
    row = 0;
    col = 0;
    i = 0;

    if (manual == -1){
	System.err.println("Error: " + p.get_errmsg());
	System.exit(1);
    }

    p.set_parameter("topdown", "true");

    for (pageno = startpage; pageno <= endpage; pageno++) {
	if (row == 0 && col == 0) {
	    i++;
	    p.begin_page(width, height);
	    font = p.load_font("Helvetica-Bold", "winansi", "");
	    p.setfont(font, 18);
	    p.set_text_pos(24, 24);
	    p.show("PDFlib Quick Reference");
	}

	pages = p.open_pdi_page(manual, pageno, "");

	if (pages == -1) {
	    System.err.println("Error: " + p.get_errmsg());
	    System.exit(1);
	}
	    p.fit_pdi_page(manual, width/maxcol*col,
		(row + 1) * height/maxrow, "scale " + (float)1/maxrow);

	p.close_pdi_page(pages);

	col++;
	if (col == maxcol) {
	    col = 0;
	    row++;
	}
	if (row == maxrow) {
	    row = 0;
	    p.end_page();
	}
    }
    // finish the last partial page
    if (row != 0 || col != 0)
	p.end_page();

    p.close();
    p.close_pdi(manual);

    buf = p.get_buffer();

    response.setContentType("application/pdf");
    response.setContentLength(buf.length);

    output = response.getOutputStream();
    output.write(buf);
    output.close();
%>