[jboss-user] [JBoss Seam] - iText PDF not working with DocumentStore and SeamServletFilt

[wquraishi]

Hello all,

I'm relatively new to SEAM and was experiencing a problem using the iText library.  I was able to successfully get a PDF to render by putting the pdf (p:XXXX) code directly inline into my .xhtml page.  I wanted this to work by generating links and allowing the user to download the PDF.  

Looking at the docs this is what I did.

In my web.xml, I added:

		<filter-name>Seam Servlet Filter</filter-name>
		<filter-class>
			org.jboss.seam.servlet.SeamServletFilter
		</filter-class>
	

	<filter-mapping>
		<filter-name>Seam Servlet Filter</filter-name>
		<url-pattern>*.pdf</url-pattern>
	</filter-mapping>

	
		<servlet-name>Document Store Servlet</servlet-name>
		<servlet-class>
			org.jboss.seam.pdf.DocumentStoreServlet
		</servlet-class>
	
	
	<servlet-mapping>
		<servlet-name>Document Store Servlet</servlet-name>
		<url-pattern>*.pdf</url-pattern>
	</servlet-mapping>

In components.xml, I added:
	<pdf:documentStore useExtensions="true" /> 

In my .xhtml page, I places a link as such:
<s:link id="agent-pdf" view="/agent-pdf.xhtml">PDF</s:link>		

I created an agent-pdf.xhtml page as such:
<p:document xmlns:f="http://java.sun.com/jsf/core"
            xmlns:ui="http://java.sun.com/jsf/facelets"
            xmlns:s="http://jboss.com/products/seam/taglib"
            xmlns:p="http://jboss.com/products/seam/pdf"
            xmlns:h="http://java.sun.com/jsf/html">
    <f:facet name="header">
        <p:font size="12">
            <p:footer borderWidthTop="1" borderColorTop="blue" borderWidthBottom="0" alignment="center">Why Seam? [<p:pageNumber />]</p:footer>
        </p:font>
    </f:facet>
    <p:paragraph spacingAfter="200" />
    <p:font size="24"><p:paragraph spacingBefore="100" alignment="center">Ten Good Reasons To Use Seam</p:paragraph></p:font>
      <p:image alignment="center" value="#{agent.photo.data}" />
    <p:chapter number="1">
        <p:title>
            <p:font size="18"><p:paragraph>It's the quickest way to get "rich"</p:paragraph></p:font>
        </p:title>
        <p:paragraph alignment="justify" spacingBefore="5">AJAX fundamentally changes the interaction model of the web. The synchronous, coarse-grained requests used by traditional web clients let many server-side applications get away with minimal caching and no session-level concurrency. The "stateless" architecture is in many cases a viable solution. But not anymore! AJAX clients hit the server with many asynchronous, concurrent, fine-grained requests, which could easily bring your database to its knees. When state is held in memory between requests, it is highly vulnerable to concurrency-related bugs, since the Java EE platform provides no constructs for dealing with session-level concurrency.</p:paragraph>
        <p:paragraph alignment="justify" spacingBefore="5">Seam's totally unique concurrency model and state-management model was conceived and designed with AJAX in mind. </p:paragraph>
        <p:paragraph alignment="justify" spacingBefore="5">Seam 1.1 integrates open source JSF-based AJAX solutions like ICEfaces and Ajax4JSF with Seam's state and concurrency management engine. You can add AJAX to your applications with ease, without the need to learn JavaScript, and you will be protected from potential bugs and performance problems associated with the switch to AJAX. </p:paragraph>
    </p:chapter>
    <p:chapter number="2">
        <p:title>
            <p:font size="18"><p:paragraph>It's the easiest way to get started with EJB 3.0 </p:paragraph></p:font>
        </p:title>
        <p:paragraph alignment="justify" spacingBefore="5">EJB 3.0 is a great component model for transactional business components, the highlight being the brand new Java Persistence API (JPA). But Java web and application frameworks designed before the release of EJB 3.0 lack support for the new component model, leaving you to write your own integration code, and in many cases forcing you into the use of a layered architecture that may not be right for your application. </p:paragraph>
        <p:paragraph alignment="justify" spacingBefore="5">Seam was designed for use with EJB 3.0 and lets you use the new component model everywhere. Since any class in a Seam application can be an EJB component, there is no need to introduce extra unwanted layers just to keep your frameworks happy. And, of course, there is no need to write code to integrate EJB 3.0 with your web framework, since Seam already has it. </p:paragraph>
        <p:paragraph alignment="justify" spacingBefore="5">Note that you don't have to use EJB 3.0 to use Seam, and if you're developing in an environment that doesn't support EJB 3.0, Seam provides alternatives. </p:paragraph>
    </p:chapter>
</p:document>

The page doesn't throw an error but only shows a blank page.  Anyway help would be greatly appreciated.  Hopefully I'm on the right track.

W


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