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Struts & Hibernate
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| | | Possible to send an image from a servlet to Shockwave? | Possible to send an image from a servlet to Shockwave? 2005-04-28 - By Darrin Smith
Back
I have an application where I need to load a 3D image based on a user selection
that takes place in a JSP.
The Flash/Shockwave plugin will have a value that relates to a servlet that
will load the image and send it back to the plugin.
So far, I can get the plugin to load just fine and contact the servlet which
loads the image and sends it back, but the Flash/Shcokcwave plugin never
completes loading (just loops a progress bar saying that it is loading).
My question is, can dynamic loading to a Flash/Shockwave component be done from
a servlet like this?
If so, can someone please point me to an example of what needs to be done to
send the image back?
Here is what I am trying in the servlet that, although no exceptions are thrown
and the file gets read in correctly, does not seem to provide the plugin what
it needs. Can anyone see what I may be doing wrong?
protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws ServletException,
IOException
{
String ct=request.getParameter("contenttype");
if ((ct==null)||(ct.equals("")))
{
ct="application/x-director";
}
try
{
ServletOutputStream out = response.getOutputStream();
response.setContentType(ct);
byte[] image = getImage();
if(image == null)
{
System.out.println("NULL IMAGE");
}
else
{
System.out.println("Returning 3D image" );
}
out.write(image);
}
catch (Exception e)
{
System.out.println(e.getMessage());
e.printStackTrace();
}
}
private byte[] getImage()
{
byte[] result = null;
String fileLocation = "C:/Documents and Settings/Administrator/My Documents
/Creator/Projects/MyApp/build/volc_hw.dcr";
File f = new File(fileLocation);
System.out.println("Trying to read from: " fileLocation);
result = new byte[(int)f.length()];
try
{
FileInputStream in = new FileInputStream(fileLocation);
//Read file into byte array
in.read(result);
}
catch(Exception ex)
{
log("Exception caught: " ex.getMessage());
}
return result;
}
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<html>
<!-- BEGIN WEBMAIL STATIONERY -->
<head></head>
<body>
<!-- WEBMAIL STATIONERY noneset -->
<DIV>I have an application where I need to load a 3D image based on a user
selection that takes place in a JSP.<BR><BR>The Flash/Shockwave plugin will
have a value that relates to a servlet that will load the image and send it
back to the plugin. <BR><BR>So far, I can get the plugin to load just fine and
contact the servlet which loads the image and sends it back, but the Flash
/Shcokcwave plugin never completes loading (just loops a progress bar saying
that it is loading). <BR><BR>My question is, can dynamic loading to a Flash
/Shockwave component be done from a servlet like this? <BR><BR>If so, can
someone please point me to an example of what needs to be done to send the
image back? <BR><BR>Here is what I am trying in the servlet that, although no
exceptions are thrown and the file gets read in correctly, does not seem to
provide the plugin what it needs. Can anyone see what I may be doing wrong?<
/DIV>
<DIV> </DIV>
<DIV> <BR><BR>protected void processRequest(HttpServletRequest request,
<BR>
HttpServletResponse response) <BR>
throws ServletException,
<BR>
IOException <BR>{ <BR><BR> String ct=request.getParameter(
"contenttype"); <BR><BR> if ((ct==null)||(ct.equals(""))) <BR> { <BR
> ct="application/x-director"; <BR> } <BR><BR> try <BR>
{ <BR> ServletOutputStream out = response.getOutputStream();
<BR> response.setContentType(ct); <BR><BR>
byte[] image = getImage(); <BR><BR> if(image == null)
<BR> { <BR> System.out.println(
"NULL IMAGE"); <BR> } <BR> els
e <BR> { <BR> System.out.println(
"Returning 3D image" ); <BR> } <BR><BR> out
.write(image); <BR> } <BR> catch (Exception e) <BR> { <BR>
System.out.println(e.getMessage()); <BR> e
.printStackTrace(); <BR> } <BR>} <BR><BR><BR>private byte[] getImage
() <BR>{ <BR> byte[] result = null; <BR><BR>
String fileLocation = "C:/Documents and Settings/Administrator/My Documents
/Creator/Projects/MyApp/build/volc_hw.dcr"; <BR> File f = new
File(fileLocation); <BR><BR> System.out.println("Trying to
read from: " fileLocation); <BR><BR> result = new byte[(int)f
.length()]; <BR><BR> try <BR> { <BR>
FileInputStream in = new FileInputStream
(fileLocation); <BR><BR> //R
ead file into byte array <BR> in.read(result);
<BR> } <BR> catch(Exception ex) <BR> { <BR>
log("Exception caught: " ex.getMessage());
<BR> } <BR> </DIV>
<DIV> return result; <BR>} <BR></DIV>
<!-- END WEBMAIL STATIONERY -->
</body>
</html>
__ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ ____ __
To unsubscribe, send email to listserv@(protected) and include in the body
of the message "signoff SERVLET-INTEREST".
<p>
Archives: http://archives.java.sun.com/archives/servlet-interest.html
Resources: http://java.sun.com/products/servlet/external-resources.html
LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
<p>
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