1 2 Previous Next 15 Replies Latest reply on Jan 23, 2009 4:58 AM by kukeltje

Attaching files

varundoda May 21, 2008 2:44 AM

Hi,

I want to create a form in which i have the option of attaching a file. For eg, there is a 'Browse' button which opens a pop up window to browse for a file. Then there is a upload button which will upload the file to the server. Is there any way to implement this?

1. Re: Attaching files

david_ling May 21, 2008 10:25 PM (in response to varundoda)

I actually did this a few days ago. The real difficulty I found was trying to include a

<h:form enctype="multipart/form-data">...</h:form>

inside the

<jbpm:dataform>...</jbpm:dataform>

. So I created an upload page, uploadFile.xhtml and placed it in the sa directory along with all the other .xhtml files.

I then passed the parameters along in the url with

<f:param name="" value=""/>

So for example if I need to upload a document in one of the process task forms, I will put in the following

<h:outputLink value="uploadFile.jsf" target="top" style="#{view.viewId == 'uploadFile.xhtml' ? 'font-weight:bold' : ''}">
<f:param name="id" value="#{var['piID']}"/>
<f:param name="ppFileName" value="Pretty print file name for display on the upload page"/>
<f:param name="fileVar" value="processInstanceVariableToSaveUnder"/>
<f:param name="fileName" value="The name that you want to save the file under"/>
<h:outputText value="Click here to upload"/>
</h:outputLink>

The upload page looks like the following

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"
 xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:h="http://java.sun.com/jsf/html"
 xmlns:f="http://java.sun.com/jsf/core"
 xmlns:gd="http://gravel.jboss.org/jsf/1.0/data"
 xmlns:ga="http://gravel.jboss.org/jsf/1.0/action"
 xmlns:gs="http://gravel.jboss.org/jsf/1.0/simple"
 xmlns:n="http://gravel.jboss.org/jsf/1.0/navigation"
 xmlns:j4j="http://jbpm.org/jbpm4jsf/core"
>

 <ui:define name="actions">
 <ga:responseActions>
 <ga:parameter name="id" target="#{piID}" required="true"/>
 <ga:parameter name="ppFileName" target="#{ppFileName}" required="true"/>
 <ga:parameter name="fileVar" target="#{fileVar}" required="true"/>
 <ga:parameter name="fileName" target="#{fileName}" required="true"/>
 <j4j:createUploadFile piID="#{piID}" ppFileName="#{ppFileName}" fileVar="#{fileVar}" fileName="#{fileName}" target="#{files}"/>
 </ga:responseActions>
 </ui:define>

 <gd:repeat value="#{files}" var="file" idVar="rid">

 <h:form enctype="multipart/form-data">
 <table>
 <thead>
 <tr>
 <th colspan="2">Upload
 <h:outputText value=" #{file.ppFileName} File"/>
 </th>
 </tr>
 </thead>
 <tbody class="results">
 <tr>
 <th>Upload</th>
 <td>
 <gd:inputFile target="#{stream}" maxSize="104857600"/>
 </td>
 </tr>
 <tr>
 <th/>
 <td style="text-align:right;">
 <h:commandButton value="Upload #{file.ppFileName}">
 <j4j:uploadFile archive="#{stream}" piID="#{file.piID}" fileVar="#{file.fileVar}" fileName="#{file.fileName}"/>
 <n:nav outcome="success" url="formSubmitted.jsf" storeMessages="true"/>
 <n:nav outcome="error" redirect="true" storeMessages="true"/>
 </h:commandButton>
 </td>
 </tr>
 </tbody>
 </table>
 </h:form>

 </gd:repeat>

</html>

I found that I couldn't pass the values straight into the form so I created an object containing the piID, ppFileName, etc. information. But this still didn't work and only seemed to work when I made it a list with only one element in it and pass it in through a loop. Maybe there's a less convuluted way of doing it, but I wasn't smart enough to find out how.

In your upload file actionListener, all you have to do is to grab the InputStream and then write it out to a FileOutputStream that points to the filename you saved it under. You can actually refer to the JBPM team's DeployProcessActionListener.java code.

Hope that helps

David

2. Re: Attaching files

varundoda May 22, 2008 1:04 AM (in response to varundoda)

I have tried doing exactly the same. But, I am getting the following error.

javax.servlet.ServletException: /sa/uploadFile.xhtml @20,131 <j4j:createUploadFile> Tag Library supports namespace: http://jbpm.org/jbpm4jsf/core, but no tag was defined for name: createUploadFile
javax.faces.webapp.FacesServlet.service(FacesServlet.java:249)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

Can you help me in this?
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3. Re: Attaching files

david_ling May 22, 2008 7:27 PM (in response to varundoda)
Hi,

I think you need to develop the createUploadFile tag and package it as part of the jbpm4jsf-14.jar

First you need the source code for org.jbpm.jsf.core.CoreLibrary.java and add the following line in there
addTagHandler("createUploadFile", CreateUploadFileHandler.class);
. Then create org.jbpm.jsf.core.handler.CreateUploadFileHandler.java as which calls org.jbpm.jsf.core.action.CreateUploadFileActionListener.java

You can base your implementation on the Jbpm team's code, they are pretty straight forward.

Make sure you return a
List<UploadFileDAO>
- with only one object in it, where UploadFileDAO.java is just a trivial Data Access Object that only contains the attributes I mentioned, such as piID, fileVar and fileName, a constructor and a bunch of getters/setters.

Hope that helps

David
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4. Re: Attaching files

johnnyright Jul 15, 2008 6:48 PM (in response to varundoda)

Hi

I'm stuck, in the part where you talk about modify CoreLibrary.java inside jbpm4jsf-14.jar, where can I get the sources of this jar file?

david_ling please help me.

Thank you in advance
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5. Re: Attaching files

johnnyright Jul 16, 2008 12:44 PM (in response to varundoda)

Some people say that is not recomended to modify jbpm4jsf-14.jar, or any component of the jbpm console,

does anybody found another way to do this task?

thanks
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6. Re: Attaching files

kukeltje Jul 17, 2008 6:34 AM (in response to varundoda)

yes, by just using e.g. richfaces and storing the file in your domain model, not the engine
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7. Re: Attaching files

johnnyright Jul 23, 2008 5:03 PM (in response to varundoda)

Thank you kukeltje for your answer ;)[/img]
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8. Re: Attaching files

smjain Jan 22, 2009 6:54 AM (in response to varundoda)

"johnnyright" wrote:
Thank you kukeltje for your answer ;)[/img]

Were you able to use rich faces..Please guide me on this. I am unable to deploy the jbpm-console.war after adding rich faces libs..
Shashank
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9. Re: Attaching files

kukeltje Jan 22, 2009 7:34 AM (in response to varundoda)

I do not adapt the jbpm-console. I leave that as is and use it what it is good for, admin purposes. For normal usage I developed my own webapp.
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10. Re: Attaching files

smjain Jan 22, 2009 7:44 AM (in response to varundoda)

"kukeltje" wrote:
I do not adapt the jbpm-console. I leave that as is and use it what it is good for, admin purposes. For normal usage I developed my own webapp.

So in effect its a complete web application which allows you to start and run a workflow...
Will that be possible to share some parts of the code..
Shashank
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11. Re: Attaching files

kukeltje Jan 22, 2009 9:26 PM (in response to varundoda)

uhhmmm..... I you seam... lots of examples there...
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12. Re: Attaching files

kukeltje Jan 22, 2009 9:27 PM (in response to varundoda)

you = use
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13. Re: Attaching files

smjain Jan 22, 2009 10:10 PM (in response to varundoda)

"kukeltje" wrote:
you = use

Can you provide some links if possible. Thanks for the inputs
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14. Re: Attaching files

smjain Jan 22, 2009 10:10 PM (in response to varundoda)

"kukeltje" wrote:
you = use

Can you provide some links if possible. Thanks for the inputs
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