Monday, March 25, 2013

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.

2nd   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

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