How to view PDF file in browser using iframe in zk

Two ways can view

First one simple use src attribute.

<iframe id="iframe" src="http://www.gradsch.ohio-state.edu/Depo/ETD_Tutorial/lesson2.pdf"

                width="600px" height="400px" style="border: 1px solid gray" />

find here details in zk fiddle.

2^nd   way to view

Index.jul

<zk>

    <window border="normal" title="Himanshu" apply="pkg$.TestComposer">

           <iframe id="report" height="800px" width="800px" autohide="true"></iframe>

  </window>

</zk>

TestComposer.java

import org.zkoss.zk.ui.*;

import org.zkoss.zk.ui.event.*;

import org.zkoss.zk.ui.util.*;

import org.zkoss.zk.ui.ext.*;

import org.zkoss.zk.au.*;

import org.zkoss.zk.au.out.*;

import org.zkoss.zul.*;

import org.zkoss.util.media.AMedia;

import java.io.*;

import java.net.*;

public class TestComposer extends GenericForwardComposer{

        Iframe report;

 

                public void doAfterCompose(Component comp) throws Exception {

                                super.doAfterCompose(comp);

                //src="http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/pdf_reference_archives/PDFReference16.pdf"

          URL url1 =

      new URL("http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/pdf_reference_archives/PDFReference16.pdf");

    byte[] ba1 = new byte[1024];

    int baLength;

                InputStream is1 = null;

          ByteArrayOutputStream bios = new ByteArrayOutputStream();

    try {

      URLConnection urlConn = url1.openConnection();

      // Checking whether the URL contains a PDF

      if (!urlConn.getContentType().equalsIgnoreCase("application/pdf")) {

                Messagebox.show("Not a pdf!!!");

      } else {

        try {

          // Read the PDF from the URL and save to a local file

         is1 = url1.openStream();

          while ((baLength = is1.read(ba1)) != -1) {

              bios.write(ba1, 0, baLength);

          }

        }catch(Exception e) {

           

          } finally { 

          is1.close();   

          }           

          final AMedia amedia = new AMedia("PDFReference16.pdf", "pdf","application/pdf", bios.toByteArray());

          report.setContent(amedia);

        }

                } catch(Exception ex) {

               

        }

      }

                public void onClick$btn(Event e) throws InterruptedException{

                                Messagebox.show("Hi btn");

                }

}

Find here details in zk fiddle