Problem using File upload in portlets

Question

hello there
I'm trying to use file upload component in one of my portlets. I searched a lot about a working component to be used in portlets since the standard one that comes with JSC doesn't work in portlets. I managed to get commons file upload and tomahawk to run in my portlet, but when I choose a file and try to get selected file's details it throughs a NullPointerException reporting that the file object is null.
so please can anyone guide me to a working portlet example, I tried to find one but I couldn't. if that's hard to find, what should I do ?
thank you in advance

Answer 1

I added file upload component in JSF from portlets in Sun Java Portal server.
Take a look...
portlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<portlet-app xmlns="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd"
version="1.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_1_0.xsd">
<portlet>
<description>SFTB Anonymous Mail Portlet</description>
<portlet-name>SFTBAnonymousMailPortlet</portlet-name>
<display-name>SFTBAnonymousMailPortlet</display-name>
<portlet-class>org.apache.portals.bridges.portletfilter.FilterPortlet</portlet-class>
<init-param>
<name>portlet-class</name>
<value>com.sun.faces.portlet.FacesPortlet</value>
</init-param>
<!-- Filter for MyFaces Tomahawk extension. -->
<init-param>
<name>portlet-filters</name>
<value>jp.sf.pal.tomahawk.filter.ExtensionsPortletFilter</value>
</init-param>
<init-param>
<description>Portlet init page</description>
<name>com.sun.faces.portlet.INIT_VIEW</name>
<value>/jsp/index.jsp</value>
</init-param>
<supports>
<mime-type>text/html</mime-type>
<portlet-mode>VIEW</portlet-mode>
<portlet-mode>EDIT</portlet-mode>
<portlet-mode>HELP</portlet-mode>
</supports>
<portlet-info>
<title>&#1054;&#1090;&#1087;&#1088;&#1072;&#1074;&#1082;&#1072; &#1087;&#1088;&#1077;&#1076;&#1083;&#1086;&#1078;&#1077;&#1085;&#1080;&#1081;</title>
<short-title>&#1054;&#1090;&#1087;&#1088;&#1072;&#1074;&#1082;&#1072; &#1087;&#1088;&#1077;&#1076;&#1083;&#1086;&#1078;&#1077;&#1085;&#1080;&#1081;</short-title>
</portlet-info>
</portlet>
</portlet-app>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>SFTBAnonymousMailComment</display-name>
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<context-param>
<param-name>javax.faces.CONFIG_FILES</param-name>
<param-value>/WEB-INF/faces-config.xml</param-value>
</context-param>
<!--
Extensions filter from Apache MyFaces Tomahawk used for uploads files.
-->
<filter>
<filter-name>ExtensionsFilter</filter-name>
<filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
<init-param>
<param-name>uploadMaxFileSize</param-name>
<param-value>10m</param-value>
<description>Set the size limit for uploaded files.
Format: 10 - 10 bytes
10k - 10 KB
10m - 10 MB
1g - 1 GB
</description>
</init-param>
<init-param>
<param-name>uploadThresholdSize</param-name>
<param-value>100k</param-value>
<description>Set the threshold size - files
below this limit are stored in memory, files above
this limit are stored on disk.
Format: 10 - 10 bytes
10k - 10 KB
10m - 10 MB
1g - 1 GB
</description>
</init-param>
</filter>
<filter-mapping>
<filter-name>ExtensionsFilter</filter-name>
<servlet-name>FacesServlet</servlet-name>
</filter-mapping>
<servlet>
<servlet-name>FacesServlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>FacesServlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
</web-app>
Files in WEB-INF/lib
commons-beanutils-1.7.0.jar
commons-collections-3.2.jar
commons-digester-1.8.jar
commons-fileupload-1.2.1.jar
commons-io-1.2.jar
commons-logging-1.1.1.jar
faces-response-filter-0.2.jar
jsf-api-1.1_02.jar
jsf-impl-1.1_02.jar
jsf-portlet-1.1.5.jar
jstl-1.1.0-D13.jar
log4j-1.2.9.jar
portals-bridges-portletfilter-1.0.jar
standard-1.1.0-D13.jar
tomahawk-1.1.6.jar
tomahawk-bridge-0.9.1.jar
Files tomahawk-bridge-0.9.1.jar, faces-response-filter-0.2.jar may be found there http://sourceforge.jp/projects/pal/
In JSF beans I'm using org.apache.myfaces.custom.fileupload.UploadedFile
Hope this helps.
Bests,
Alex Magdenko