need servlet code for converting html string to pdf

#26742

hello,
can you please provide me the servlet code in which i can convert html string url to pdf.

it will save my lot of time.

Prashant

#29032

[language=java:2bbaexst]import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.URL;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.zefer.pd4ml.PD4Constants;
import org.zefer.pd4ml.PD4ML;

public class PD4MLServlet extends HttpServlet {

public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {

URL url = new URL(“http://pd4ml.com”);

PD4ML html = new PD4ML();
html.setPageSize( PD4Constants.A4 );
html.setPageInsets( new java.awt.Insets(20, 50, 10, 10) );
html.setHtmlWidth( 850 );

ByteArrayOutputStream baos = new ByteArrayOutputStream();
html.render( url, baos );

byte[] result = baos.toByteArray();

response.setContentType(“application/pdf”);
response.setHeader(“Content-disposition”,”inline; filename=test.pdf”);
response.setHeader(“Pragma”, “cache”);
response.setHeader(“Expires”, “0”);
response.setHeader(“Cache-control”, “private”);

response.setContentLength(result.length);
ServletOutputStream sos = response.getOutputStream();
sos.write( result );
}
}[/language:2bbaexst]

#29033

Hello,
I tried to run above code in my applicayion which is a JSF enabled application.while trying to convert given URL i get the following exception.

java.lang.NullPointerException
org.zefer.pd4ml.PD4ML.o00000(Unknown Source)
org.zefer.pd4ml.PD4ML.render(Unknown Source)
com.xyz.report.jsf.HtmlToPDF.doGet(HtmlToPDF.java:38)
javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
com.xyz.servlet.BaseEntityFilter.doFilter(BaseEntityFilter.java:44)

my code is

public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {

URL url = new URL(“http://localhost:8080/xyzweb/faces/templates/includes/report/A104_fv_1.xhtml”);

PD4ML pd4ml = new PD4ML();

pd4ml.setPageSize( PD4Constants.A4 );
pd4ml.setPageInsets( new java.awt.Insets(20, 50, 10, 10) );
pd4ml.setHtmlWidth(1000);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
pd4ml.render(url, baos);
//pd4ml.render(arg0, arg1)
byte[] result = baos.toByteArray();

response.setContentType(“application/pdf”);
response.setHeader(“Content-disposition”,”inline; filename=test.pdf”);
response.setHeader(“Pragma”, “cache”);
response.setHeader(“Expires”, “0”);
response.setHeader(“Cache-control”, “private”);

response.setContentLength(result.length);
ServletOutputStream sos = response.getOutputStream();
sos.write( result );
}

#29034

Which PD4ML version do you currently use? You could check it in Manifest file of pd4ml.jar

#29035

Hello,
i am using pd4ml 3.8.0fx4 version

#29036

i think the problem is url is not able to read because of session. the xhtml in url shown is generated through the code and then user can view the report through that url.
do you have any suggestions how to handle this case with the session?

Prashant.

#29037

You need to pass the session id with request.

The simplest way would be to embed the session ID to the URL:

[language=java:3d15w8pg]URL url = new URL(“http://localhost:8080/xyzweb/faces/templates/includes/report/A104_fv_1.xhtml” +
“;jsessionid=” + request.getSession().getId());[/language:3d15w8pg]

A bit trickier approach is to pass session IDs via cookies.

#29038

Hi,

I have been using the below sample code in my application. I have been using the demo jar.

PD4ML html = new PD4ML();<br /> html.setPageSize(new java.awt.Dimension(450, 450));<br /> html.setPageInsets(new java.awt.Insets(20, 50, 10, 10));<br /> html.setHtmlWidth(750);<br /> html.enableImgSplit(false);<br /> response.setHeader("Content-Disposition", "attachment; filename=test.pdf");<br /> <br /> URL base = new URL("file:D:/home.jsp");<br /> html.render(url, baos);<br />

Is this feature available in PD4ML library or in PD4Ml library PRO? I have to give this info to my procurement team.

#29039

The code works with both Std and Pro versions.

The Pro version would also allow you to embed TTF fonts and to display with them non-Latin and special characters.

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