[Tobago] Problem with PDF download and Ajax
Hi,
I've a page with a link to download a PDF file. The PDF download itself
works without a problem. But after a download Ajax requests don't work
anymore, for example a popup or a tabGroup with reloadTab.
Here's a small testcase for this behavior.
The page:
<%@ taglib uri="http://myfaces.apache.org/tobago/component"; prefix="tc"
%><%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f"
%><%@ page contentType="text/html;charset=UTF-8" language="java"
%><%@ page pageEncoding="UTF-8"
%>
The java code for the PDF download:
public void showPDFActionListener(ActionEvent e) {
String filename = (String)e.getComponent().getAttributes().get("file");
sendFile(attachmentPath, filename, "application/pdf");
}
protected void sendFile(String filepath, String filename, String mimeType) {
File file = new File(filepath, filename);
if (file.exists() && file.isFile()) {
try {
InputStream in = new FileInputStream(file);
FacesContext facesContext = FacesContext.getCurrentInstance();
HttpServletResponse response =
(HttpServletResponse)facesContext.getExternalContext().getResponse();
response.setContentType(mimeType);
response.setContentLength(in.available());
response.setHeader("Content-disposition",
" attachment;filename=\"" + filename + "\"");
ServletOutputStream out = response.getOutputStream();
byte[] buffer = new byte[0x1];
while (in.read(buffer) > 0) {
out.write(buffer);
}
in.close();
out.close();
StateManager stateManager =
(StateManager)facesContext.getApplication().getStateManager();
stateManager.saveSerializedView(facesContext);
facesContext.responseComplete();
} catch (Exception x) {
getLog().error("Error writing output", x);
}
} else {
getLog().error("File " + file.getAbsolutePath() + " not found");
}
}
I think there's a problem with Ajax when a page submit has no result.
Regards
Helmut
Re: [Tobago] Problem with PDF download and Ajax
Hello Helmut,
just solved see:
http://issues.apache.org/jira/browse/TOBAGO-303
Should be available with the next nightly build
Regards
Bernd
H. Swaczinna wrote:
Hi,
I've a page with a link to download a PDF file. The PDF download itself
works without a problem. But after a download Ajax requests don't work
anymore, for example a popup or a tabGroup with reloadTab.
Here's a small testcase for this behavior.
The page:
<%@ taglib uri="http://myfaces.apache.org/tobago/component"; prefix="tc"
%><%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f"
%><%@ page contentType="text/html;charset=UTF-8" language="java"
%><%@ page pageEncoding="UTF-8"
%>
>
rows="fixed;fixed"/>
label="Close">
The java code for the PDF download:
public void showPDFActionListener(ActionEvent e) {
String filename = (String)e.getComponent().getAttributes().get("file");
sendFile(attachmentPath, filename, "application/pdf");
}
protected void sendFile(String filepath, String filename, String mimeType) {
File file = new File(filepath, filename);
if (file.exists() && file.isFile()) {
try {
InputStream in = new FileInputStream(file);
FacesContext facesContext = FacesContext.getCurrentInstance();
HttpServletResponse response =
(HttpServletResponse)facesContext.getExternalContext().getResponse();
response.setContentType(mimeType);
response.setContentLength(in.available());
response.setHeader("Content-disposition",
" attachment;filename=\"" + filename + "\"");
ServletOutputStream out = response.getOutputStream();
byte[] buffer = new byte[0x1];
while (in.read(buffer) > 0) {
out.write(buffer);
}
in.close();
out.close();
StateManager stateManager = (StateManager)facesContext.getApplication().getStateManager();
stateManager.saveSerializedView(facesContext);
facesContext.responseComplete();
} catch (Exception x) {
getLog().error("Error writing output", x);
}
} else {
getLog().error("File " + file.getAbsolutePath() + " not found");
}
}
I think there's a problem with Ajax when a page submit has no result.
Regards
Helmut
Re: [Tobago] Problem with PDF download and Ajax
Hi Helmut,
As per ur code, u give the location of a PDF doc on the server.
Which when referred then that would be downloaded.
But what if a pdf doc is generated within a javacode, say with Jasper Reports.
How can i pass that pdf doc generated in runtime to the jsp page and display
that ?
Thnx in Advance,
Regards,
Madan
- Original Message
From: Bernd Bohmann <[EMAIL PROTECTED]>
To: MyFaces Discussion
Sent: Tuesday, 27 February, 2007 4:25:31 AM
Subject: Re: [Tobago] Problem with PDF download and Ajax
Hello Helmut,
just solved see:
http://issues.apache.org/jira/browse/TOBAGO-303
Should be available with the next nightly build
Regards
Bernd
H. Swaczinna wrote:
> Hi,
>
> I've a page with a link to download a PDF file. The PDF download itself
> works without a problem. But after a download Ajax requests don't work
> anymore, for example a popup or a tabGroup with reloadTab.
>
> Here's a small testcase for this behavior.
>
> The page:
>
> <%@ taglib uri="http://myfaces.apache.org/tobago/component";; prefix="tc"
> %><%@ taglib uri="http://java.sun.com/jsf/core";; prefix="f"
> %><%@ page contentType="text/html;charset=UTF-8" language="java"
> %><%@ page pageEncoding="UTF-8"
> %> >
>
>
>rows="fixed;fixed"/>
>
>label="PDF"
> immediate="true"
> transition="false"
> actionListener="#{anlagenController.showPDFActionListener}">
>
>
>label="Ajax">
>
>
>
>label="Close">
>
>
>
>
>
>
>
>
>
> The java code for the PDF download:
>
> public void showPDFActionListener(ActionEvent e) {
> String filename = (String)e.getComponent().getAttributes().get("file");
> sendFile(attachmentPath, filename, "application/pdf");
> }
>
> protected void sendFile(String filepath, String filename, String mimeType) {
> File file = new File(filepath, filename);
> if (file.exists() && file.isFile()) {
> try {
> InputStream in = new FileInputStream(file);
> FacesContext facesContext = FacesContext.getCurrentInstance();
> HttpServletResponse response =
>
> (HttpServletResponse)facesContext.getExternalContext().getResponse();
> response.setContentType(mimeType);
> response.setContentLength(in.available());
> response.setHeader("Content-disposition",
> " attachment;filename=\"" + filename + "\"");
> ServletOutputStream out = response.getOutputStream();
> byte[] buffer = new byte[0x1];
> while (in.read(buffer) > 0) {
> out.write(buffer);
> }
> in.close();
> out.close();
> StateManager stateManager =
> (StateManager)facesContext.getApplication().getStateManager();
> stateManager.saveSerializedView(facesContext);
> facesContext.responseComplete();
> } catch (Exception x) {
> getLog().error("Error writing output", x);
> }
> } else {
> getLog().error("File " + file.getAbsolutePath() + " not found");
> }
> }
>
> I think there's a problem with Ajax when a page submit has no result.
>
> Regards
> Helmut
>
__
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RE: Re: [Tobago] Problem with PDF download and Ajax
Hi Madan,here's a (stripped) example I use to generate print files within java code: label="Print" immediate="true" transition="false" action=""/> public void printAction() { String pathname = System.getProperty("java.io.tmpdir"); String filename = "test.pdf"; File pdfFile = new File(pathname, filename); try { PrintStream out = new PrintStream(pdfFile); // Write the PDF content out.println(...); out.close(); sendFile(pathname, filename, "application/pdf"); } catch (IOException x) { LOG.error("Can't create PDF file", x); } }RegardsHelmut Hi Helmut,As per ur code, u give the location of a PDF doc on the server.Which when referred then that would be downloaded.But what if a pdf doc is generated within a javacode, say with Jasper Reports.How can i pass that pdf doc generated in runtime to the jsp page and display that ?Thnx in Advance,Regards,Madan - Original Message From: Bernd Bohmann <[EMAIL PROTECTED]>To: MyFaces Discussion Sent: Tuesday, 27 February, 2007 4:25:31 AMSubject: Re: [Tobago] Problem with PDF download and AjaxHello
Helmut,just solved see:http://issues.apache.org/jira/browse/TOBAGO-303Should be available with the next nightly buildRegardsBerndH. Swaczinna wrote:> Hi,> > I've a page with a link to download a PDF file. The PDF download itself> works without a problem. But after a download Ajax requests don't work> anymore, for example a popup or a tabGroup with reloadTab.> > Here's a small testcase for this behavior.> > The page:> > <%@ taglib uri="http://myfaces.apache.org/tobago/component"; prefix="tc" > %><%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f" > %><%@ page contentType="text/html;charset=UTF-8"
language="java" > %><%@ page pageEncoding="UTF-8" > %>> >> > > > rows="fixed;fixed"/>> > > label="PDF"> immediate="true"> transition="false">
actionListener="#{anlagenController.showPDFActionListener}">> > > > label="Ajax">> > > > >
label="Close">> > > > > > > > > > The java code for the PDF download:> > public void showPDFActionListener(ActionEvent e) {> String filename = (String)e.getComponent().getAttributes().get("file");> sendFile(attachmentPath, filename, "application/pdf");> }> > protected void
sendFile(String filepath, String filename, String mimeType) {> File file = new File(filepath, filename);> if (file.exists() && file.isFile()) {> try {> InputStream in = new FileInputStream(file);> FacesContext facesContext = FacesContext.getCurrentInstance();> HttpServletResponse response = > (HttpServletResponse)facesContext.getExternalContext().getResponse();> response.setContentType(mimeType);> response.setContentLength(in.available());>
response.setHeader("Content-disposition", > " attachment;filename=\"" + filename + "\"");> ServletOutputStream out = response.getOutputStream();> byte[] buffer = new byte[0x1];> while (in.read(buffer) > 0) {> out.write(buffer);> }> in.close();> out.close();> StateManager stateManager = (StateManager)facesContext.getApplication().getStateManager();>
stateManager.saveSerializedView(facesContext); > facesContext.responseComplete();> } catch (Exception x) {> getLog().error("Error writing output", x);> }> } else {> getLog().error("File " + file.getAbsolutePath() + " not found");> }> }> > I think there's a problem with Ajax when a page submit has no result.> > Regards> Helmut>
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