You have already sent a response to the browser by writing to the output
stream, hence the error created by struts.
I do something very similar in my application, except I stuck the file
sending in a normal servlet as it doesn't need/use any struts
functionality and there's no action to forward on to. Essentially just
implement the code you already have in the service() method of a servlet.
Paul
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"Vasudevrao Gupta" <[EMAIL PROTECTED]>
03/03/2004 14:57
Please respond to "Struts Users Mailing List"
To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>, "'Satya
Narayan Dash'" <[EMAIL PROTECTED]>
cc:
Subject: Viewing .pdf files usign struts frames work..
Hi All,
I am trying to view a pdf file using struts frame work..
I am able to view the file ,but it throws an illegalStateException as
struts
forward the request after I send the output stream.
Below is the action mapping:
<action name="enquiryFormBean"
path="/viewScannedFile"
scope="request"
type="com.rwe.thameswater.els.enquiry.action.ViewScannedFileRefAction"input=
"/screens/enquiry/jsp/ADS_ELS_CreateEnquiry.jsp"
validate="true">
<forward name="SUCCESS"
path="/screens/enquiry/jsp/ADS_ELS_ScannedFile.jsp">
</forward>
</action>
below is the action class execute() method:
try {
MessageResources resource
= this.getResources(request);
String scannedFileFolder
= (String)
resource.getMessage(ELSEnquiryConstantsIF.SCANNED_FILE_LOCATN);
System.out.println("scannedFileFolder>>"+scannedFileFolder);
String scannedFileExtn =
(String)
resource.getMessage(ELSEnquiryConstantsIF.SCANNED_FILE_EXTN);
System.out.println("scannedFileExtn>>"+scannedFileExtn);
String
scannedFileLocation = scannedFileFolder +
request.getParameter("scannedFileReference") + scannedFileExtn;
System.out.println("scannedFileLocation>>"+scannedFileLocation);
String contentType =
(String)
resource.getMessage(ELSEnquiryConstantsIF.SCANNED_FILE_CONTENT);
System.out.println("contentType>>"+contentType);
response.setContentType(contentType);
File pdfFile = new
File(scannedFileLocation);
response.setContentLength((int) pdfFile.length());
FileInputStream in = new
FileInputStream(pdfFile);
request.setAttribute("FILE",in);
OutputStream out =
response.getOutputStream();
byte[] buf = new
byte[4096];
int count = 0;
while ((count =
in.read(buf)) >= 0) {
out.write(buf, 0, count);
}
out.flush();
in.close();
out.close();
} catch (Exception e) {
// Report the error using
the appropriate name and ID.
System.out.println("Exception found while viewing>>"+e);
errors.add("name", new
ActionError("id"));
}
return (mapping.findForward("SUCCESS"));
}
Please suggest me anyother alternative using the struts framework
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