CreateAnAJAXBasedFileuploadProgressbarDialog

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How to Create an AJAX based fileupload progressbar dialog

Create a struts based Appfuse project

C:\projects\appfuse-1.9.3-src\appfuse>ant new
Buildfile: build.xml

clean:
     [echo] Cleaning build and distribution directories

init:

new:
     [echo]
     [echo] +-------------------------------------------------------------+
     [echo] |    -- Welcome to the AppFuse New Application Wizard! --     |
     [echo] |                                                             |
     [echo] | To create a new application, please answer the following    |
     [echo] | questions.                                                  |
     [echo] +-------------------------------------------------------------+

    [input] What would you like to name your application [myapp]?
progressbar
    [input] What would you like to name your database [mydb]?
progressbar
    [input] What package name would you like to use [org.appfuse]?

    [input] What web framework would you like to use [webwork,tapestry,spring,jsf,struts]?
struts
     [echo] Creating new application named 'progressbar'...
     [copy] Copying 356 files to C:\projects\appfuse-1.9.3-src\progressbar
     [copy] Copying 81 files to C:\projects\appfuse-1.9.3-src\progressbar\extras
     [copy] Copying 1 file to C:\projects\appfuse-1.9.3-src\progressbar
     [copy] Copying 1 file to C:\projects\appfuse-1.9.3-src\progressbar

init:

fixcrlf:
     [echo] Running fixcrlf....
     [echo]
     [echo] +-------------------------------------------------------------+
     [echo] |           -- Application created successfully! --           |
     [echo] |                                                             |
     [echo] | Now you should be able to cd to your application and run:   |
     [echo] | > ant setup test-all                                        |
     [echo] +-------------------------------------------------------------+

BUILD SUCCESSFUL
Total time: 38 seconds
C:\projects\appfuse-1.9.3-src\appfuse>

C:\projects\appfuse-1.9.3-src\appfuse>cd ..

C:\projects\appfuse-1.9.3-src>cd progressbar

C:\projects\appfuse-1.9.3-src\progressbar>

C:\projects\appfuse-1.9.3-src\progressbar>ant setup-tomcat (if not done before. Only needed once)

C:\projects\appfuse-1.9.3-src\progressbar>ant setup-db

C:\projects\appfuse-1.9.3-src\progressbar>ant deploy

Start tomcat and see if it works. Create a user that you can use to login and test the functionality we are going to add.

Install the serverside utility classes

Extract the attached fileupload.zip (see bottom of this page) to < Your project folder >\src\web\org\appfuse\webapp\action

Listing the action folder must be like:

helge@duke /cygdrive/c/projects/appfuse-1.9.3-src/progressbar/src/web/org/appfuse/webapp/action
$ find .
.
./ActionExceptionHandler.java
./BaseAction.java
./fileupload
./fileupload/ExtendedMultiPartRequestHandler.java
./fileupload/FileUploadAction.java
./fileupload/upload
./fileupload/upload/MonitoredDiskFileItem.java
./fileupload/upload/MonitoredDiskFileItemFactory.java
./fileupload/upload/MonitoredOutputStream.java
./fileupload/upload/OutputStreamListener.java
./fileupload/upload/UploadInfo.java
./fileupload/upload/UploadListener.java
./fileupload/upload/UploadMonitor.java
./fileupload/util
./fileupload/util/UploadUtil.java
./PasswordHintAction.java
./ReloadAction.java
./SignupAction.java
./UploadAction.java
./UserAction.java

helge@duke /cygdrive/c/projects/appfuse-1.9.3-src/progressbar/src/web/org/appfuse/webapp/action
$ 

Create the formbean

Edit web.compile.classpath

1. Open the file < Your project folder >\properties.xml and find the element
2. Add and

The reult should be

    <!-- Web -->
    <path id="web.compile.classpath">
        <pathelement location="${dist.dir}/${webapp.name}-dao.jar"/>
        <pathelement location="${dist.dir}/${webapp.name}-service.jar"/>
        <pathelement location="${struts.jar}"/>
        <pathelement location="${strutsmenu.jar}"/>
        <pathelement location="${displaytag.jar}"/>
        <pathelement location="${jakarta-oro.jar}"/>
        <pathelement location="${commons-digester.jar}"/>
        <pathelement location="${commons-logging.jar}"/>
        <pathelement location="${commons-beanutils.jar}"/>
        <pathelement location="${commons-collections.jar}"/>
        <pathelement location="${commons-fileupload.jar}"/>
        <pathelement location="${commons-lang.jar}"/>
        <pathelement location="${commons-validator.jar}"/>
        <pathelement location="${servletapi.jar}"/>
        <pathelement location="${commons-fileupload.jar}"/>
        <pathelement location="${dwr.jar}"/>        
        <fileset dir="${javamail.dir}" includes="*.jar"/>
        <fileset dir="${spring.dir}" includes="*.jar"/>
        <fileset dir="${jstl.dir}/lib" includes="jstl.jar"/>
    </path>

Configure DWR

Edit the file < Your project folder >\web\WEB-INF\dwr.xml so the content becomes:

<!DOCTYPE dwr PUBLIC
    "-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN"
    "http://www.getahead.ltd.uk/dwr/dwr10.dtd">
<dwr>
  <!-- enable/disable dwr debug in web.xml where the servlet is mapped as 'dwr-invoker' -->  
  <allow>
        <!--create creator="spring" javascript="UserManager">
            <param name="beanName" value="userManager"/>
            <include method="getUsers"/>
        </create>
        <convert converter="bean" match="org.appfuse.model.User"/-->
        <create creator="new" javascript="UploadMonitor">
            <param name="class" value="org.appfuse.webapp.action.fileupload.upload.UploadMonitor"/>
        </create>
        <convert converter="bean" match="org.appfuse.webapp.action.fileupload.upload.UploadInfo"/>
    </allow>
</dwr>

Redeploy the changes with the command:

C:\projects\appfuse-1.9.3-src\progressbar>ant deploy

Test DWR

You will need to login. And gets to the DWR test page. Click the UploadMonitor link. That page click on the Execute button.

The test should look like this image:

Create css and javascript files

Create the Struts form JSP

productivity.jpg		18309 bytes
FileUploadForm.java		2933 bytes
fileupload-js.zip		40613 bytes
fileupload.zip		14762 bytes
dwrLightboxFileupload.jpg		112283 bytes
DWRTest.jpg		155595 bytes
AjaxFileTransfer.jpg		93101 bytes