FileUpload problems
I am using the example of the rich liveDemo: Upload but it's always in nullPointerException method getData(), anyone know why? Look my code:
package br.com.lgweb.crop.util;
/**
*
*/
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import org.richfaces.event.UploadEvent;
import org.richfaces.model.UploadItem;
/**
* @author Ilya Shaikovsky
*
*/
public class FileUploadBean{
private ArrayList<File> files = new ArrayList<File>();
private int uploadsAvailable = 5;
private boolean autoUpload = false;
private boolean useFlash = false;
public int getSize() {
if (getFiles().size()>0){
return getFiles().size();
}else
{
return 0;
}
}
public FileUploadBean() {
}
public void paint(OutputStream stream, Object object) throws IOException {
stream.write(getFiles().get((Integer)object).getData());
}
public void listener(UploadEvent event) throws Exception{
UploadItem item = event.getUploadItem();
File file = new File();
file.setLength(item.getData().length);
file.setName(item.getFileName());
file.setData(item.getData());
files.add(file);
uploadsAvailable--;
}
public String clearUploadData() {
files.clear();
setUploadsAvailable(5);
return null;
}
public long getTimeStamp(){
return System.currentTimeMillis();
}
public ArrayList<File> getFiles() {
return files;
}
public void setFiles(ArrayList<File> files) {
this.files = files;
}
public int getUploadsAvailable() {
return uploadsAvailable;
}
public void setUploadsAvailable(int uploadsAvailable) {
this.uploadsAvailable = uploadsAvailable;
}
public boolean isAutoUpload() {
return autoUpload;
}
public void setAutoUpload(boolean autoUpload) {
this.autoUpload = autoUpload;
}
public boolean isUseFlash() {
return useFlash;
}
public void setUseFlash(boolean useFlash) {
this.useFlash = useFlash;
}
}
file:
package br.com.lgweb.crop.util;
public class File {
private String Name;
private String mime;
private long length;
private byte[] data;
public byte[] getData() {
return data;
}
public void setData(byte[] data) {
this.data = data;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
int extDot = name.lastIndexOf('.');
if(extDot > 0){
String extension = name.substring(extDot +1);
if("bmp".equals(extension)){
mime="image/bmp";
} else if("jpg".equals(extension)){
mime="image/jpeg";
} else if("gif".equals(extension)){
mime="image/gif";
} else if("png".equals(extension)){
mime="image/png";
} else {
mime = "image/unknown";
}
}
}
public long getLength() {
return length;
}
public void setLength(long length) {
this.length = length;
}
public String getMime(){
return mime;
}
}
my page
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c"%>
<html>
<head>
<title></title>
</head>
<body>
<f:view>
<style>
.top {
vertical-align: top;
}
.info {
height: 202px;
overflow: auto;
}
</style>
<h:form>
<h:panelGrid columns="2" columnClasses="top,top">
<rich:fileUpload fileUploadListener="#{fileUploadBean.listener}"
maxFilesQuantity="#{fileUploadBean.uploadsAvailable}"
id="upload"
immediateUpload="#{fileUploadBean.autoUpload}"
acceptedTypes="jpg, gif, png, bmp" allowFlash="#{fileUploadBean.useFlash}">
<a4j:support event="onuploadcomplete" reRender="info" />
</rich:fileUpload>
<h:panelGroup id="info">
<rich:panel bodyClass="info">
<f:facet name="header">
<h:outputText value="Uploaded Files Info" />
</f:facet>
<h:outputText value="No files currently uploaded"
rendered="#{fileUploadBean.size==0}" />
<rich:dataGrid columns="1" value="#{fileUploadBean.files}"
var="file" rowKeyVar="row">
<rich:panel bodyClass="rich-laguna-panel-no-header">
<h:panelGrid columns="2">
<a4j:mediaOutput element="img" mimeType="#{file.mime}"
createContent="#{fileUploadBean.paint}" value="#{row}"
style="width:100px; height:100px;" cacheable="false">
<f:param value="#{fileUploadBean.timeStamp}" name="time"/>
</a4j:mediaOutput>
<h:panelGrid columns="2">
<h:outputText value="File Name:" />
<h:outputText value="#{file.name}" />
<h:outputText value="File Length(bytes):" />
<h:outputText value="#{file.length}" />
</h:panelGrid>
</h:panelGrid>
</rich:panel>
</rich:dataGrid>
</rich:panel>
<rich:spacer height="3"/>
<br />
<a4j:commandButton action="#{fileUploadBean.clearUploadData}"
reRender="info, upload" value="Clear Uploaded Data"
rendered="#{fileUploadBean.size>0}" />
</h:panelGroup>
</h:panelGrid>
</h:form>
</f:view>
</body>
</html>
please help me.
Thank you.
