need to refresh a lot to see the generated pdf document

[vishme vish]

Hi Everyone,

I am generating a pdf document from xml using XSL-FO. When i execute my code, i am able to get the output, but i need to click on the refresh button many times.

I don't understand why this is happening. Can any one Pl explain me what might be the problem

Thanks in Advance.

[Madhav Lakkapragada]

I am a biginner in the FPO arena.
Did you try searching the Apache FOP web site, just a thought, I am sure you did your home work.

Where is WilliamB when we need him?

- m

[Eric Pascarello]

Sounds like you have a problem with caching to me!

[Balaji Loganathan]

1. Have you tested it with other PC's ?
2. how does your url look like ? does it have a .pdf string at the end ?
3. are you supplying the xml and xsl at the url or inside your java xsl transformation code ?

[William Brogden]

As I recall, PDF plugins like to have a content-length to work with. It sounds like you are generating PDF output directly to the response stream so you can't set the content-length.

If this was my problem I would write the pdf to a temp file in order to be able to send the content-length correctly. That also helps with debugging the FOP since you can have the server side keep the temp file as you develop the application. I also like to keep the .fo output around during development so you can see what is being generated.

In general, I try to develop servlet applications in parts that can be tested OUTSIDE the servlet environment as much as possible - servlets have so many pitfalls.

Bill

[vishme vish]

Thank you all for the replies.

I am not able to understand why i need to refresh a lot.
I am executing my code through WSAD. The URL is
http://localhost:9080/PDFOutput/TestingServlet
Here is my Servlet code, that is used to generate the pdf document.
Here i am passing xml as String.

 public class TestingServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException{
try {
// Set up a FOP driver
Driver driver = new Driver();
//Setup logger
Logger logger = new ConsoleLogger(ConsoleLogger.LEVEL_FATAL);
driver.setLogger(logger);
MessageHandler.setScreenLogger(logger);
resp.setContentType("application/pdf");
// Setup Renderer (output format)        
driver.setRenderer(Driver.RENDER_PDF);
OutputStream outStream = resp.getOutputStream();
driver.setOutputStream(outStream);
try {
   //Setup input for XSLT transformation
          TransformerFactory factory=TransformerFactory.newInstance();
 InputStream xslFile = getClass().getResourceAsStream ("details.xsl");       Transformer transformer = factory.newTransformer(new StreamSource(xslFile));
            String strXML = xmlns:xsi=\"http://www.w3.org/2001/XMLSchemainstance\"><Family><name>Suresh</name><age>30</age><gender>Male</gender></Family><Family><name>Nitin</name><age>38</age><gender>Male</gender></Family></details>";   
         Reader reader = new StringReader(strXML);
         Source src = new StreamSource(reader);
         Result res = new SAXResult(driver.getContentHandler());
        // Start XSLT transformation and FOP processing
         transformer.transform(src, res);
}catch(Exception exc){
exc.printStackTrace();
}
   } catch (OutOfMemoryError ome) {
       ome.printStackTrace();
   } catch (Exception e) {
e.printStackTrace();
   }
  }
} 

And here is my details.xsl file.

 
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/Xsl/Format">
 
<xsl:template match="/">
 <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format">
   <fo:layout-master-set>
     <fo:simple-page-master master-name="simple"
                   page-height="29.7in" 
                   page-width="21in"
                   margin-top="1in" 
                   margin-bottom="2in" 
                   margin-left="2.5in" 
                   margin-right="2.5in">
       <fo:region-body margin-top="3in"/>
       <fo:region-before extent="3in"/>
       <fo:region-after extent="1.5in"/>
     </fo:simple-page-master>
   </fo:layout-master-set>
   <fo :-P	 age-sequence master-reference="simple">
   <fo:flow flow-name="xsl-region-body">
         <xsl:for-each select="details">
         <fo:table width="100%" space-before.optimum="1pt" space-after.optimum="2pt">
<fo:table-column />
<fo:table-column />
<fo:table-column />
<fo:table-header> 
<!--<fo:table-row space-before.optimum="1pt" space-after.optimum="2pt" padding-start="2pt" padding-end="2pt" padding-before="2pt" padding-after="2pt">
<fo:table-cell padding-start="2pt" padding-end="2pt" padding-before="2pt" padding-after="2pt">
<fo:block />
</fo:table-cell>
</fo:table-row> -->
<fo:table-row font-size="20pt" space-before.optimum="1pt">
<fo:table-cell background-color="orange" border-style="solid" border-width="2pt" border-color="black" padding-start="3pt" padding-end="3pt" padding-before="3pt" padding-after="3pt" display-align="center" text-align="start">
<fo:block>
<fo:block text-align="center" space-before.optimum="1pt" space-after.optimum="2pt">
<fo:block background-color="orange">
<fo:inline font-weight="bold">Name</fo:inline>
</fo:block>
</fo:block>
</fo:block>
</fo:table-cell>
<fo:table-cell background-color="orange" border-style="solid" border-width="2pt" border-color="black" padding-start="3pt" padding-end="3pt" padding-before="3pt" padding-after="3pt" display-align="center" text-align="start">
<fo:block>
<fo:block text-align="center" space-before.optimum="1pt" space-after.optimum="2pt">
<fo:block background-color="orange">
<fo:inline font-weight="bold">Age</fo:inline>
</fo:block>
</fo:block>
</fo:block>
</fo:table-cell>
<fo:table-cell background-color="orange" border-style="solid" border-width="2pt" border-color="black" padding-start="3pt" padding-end="3pt" padding-before="3pt" padding-after="3pt" display-align="center" text-align="start">
<fo:block>
<fo:block text-align="center" space-before.optimum="1pt" space-after.optimum="2pt">
<fo:block background-color="orange">
<fo:inline font-weight="bold">Gender</fo:inline>
</fo:block>
</fo:block>
</fo:block>
</fo:table-cell>
</fo:table-row>
</fo:table-header>
<fo:table-body>
<xsl:for-each select="Family">
<fo:table-row font-size="20pt" space-before.optimum="1pt">
<fo:table-cell background-color="yellow" border-bottom-style="none" border-left-style="none" border-right-style="none" border-top-style="none" text-align="center" border-style="none" border-width="1pt" border-color="black" display-align="after" padding-start="1pt" padding-end="1pt" padding-before="0pt" padding-after="0pt">
<fo:block>
<xsl:for-each select="name">
<fo:inline border-bottom-style="none" border-left-style="none" border-right-style="none" border-top-style="none">
<xsl:apply-templates />
</fo:inline>
</xsl:for-each>
</fo:block>
</fo:table-cell>
<fo:table-cell background-color="yellow" border-bottom-style="none" border-left-style="none" border-right-style="none" border-top-style="none" text-align="center" border-style="none" border-width="1pt" border-color="black" display-align="after" padding-start="1pt" padding-end="1pt" padding-before="0pt" padding-after="0pt">
<fo:block>
<xsl:for-each select="age">
<fo:inline border-bottom-style="none" border-left-style="none" border-right-style="none" border-top-style="none">
<xsl:apply-templates />
</fo:inline>
</xsl:for-each>
</fo:block>
</fo:table-cell>
<fo:table-cell background-color="yellow" border-bottom-style="none" border-left-style="none" border-right-style="none" border-top-style="none" text-align="center" border-style="solid" border-width="1pt" border-color="black" display-align="after" padding-start="1pt" padding-end="1pt" padding-before="0pt" padding-after="0pt">
<fo:block>
<xsl:for-each select="gender">
<fo:inline border-bottom-style="none" border-left-style="none" border-right-style="none" border-top-style="none">
<xsl:apply-templates />
</fo:inline>
</xsl:for-each>
</fo:block>
</fo:table-cell>
</fo:table-row>
</xsl:for-each>
</fo:table-body>
</fo:table>
       </xsl:for-each>
   </fo:flow>
   </fo :-P	 age-sequence>
  </fo:root> 
 </xsl:template>
</xsl:stylesheet>
 

Any help would be greatly appreciated

Thanks in Advance.

[Balaji Loganathan]

Add this few lines to your servlet code after the codeline MessageHandler.setScreenLogger(logger);


resp.setContentType("application/pdf");
resp.setHeader("Content-Disposition","inline;filename=details.pdf ");

and see how its works.

Instead of writing it to outputstream, try to write it to a bytearrayoutputstream and then assign it to printwriter. (by this way you can get the content length of your file then you can set the response length using resp.setContentLength(bytearrarycontent.length)