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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