richfaces 4.3 fileUpload java.lang.NullPointerException
Dear all,
I'm a newbie with richfaces. Now I'm trying to use fileUpload but I obtain NullPointerException error. I'm using RichFaces 4.3.2 with GlassFish 3.1.2.2 and NetBeans 7.3.
This is the form:
<h:form> <h:panelGrid columns="2" columnClasses="top,top">
<rich:fileUpload fileUploadListener="#{fileUploadBean.listener(event)}"
id="upload" acceptedTypes="txt,csv, pdf"
ontyperejected="alert('Only Text and CSV files are accepted');"
maxFilesQuantity="5">
<a4j:ajax event="uploadcomplete" execute="@none" render="info" />
</rich:fileUpload>
</h:panelGrid>
<h:panelGroup id="info">
<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="image/jpeg"
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>
<a4j:commandButton action="#{fileUploadBean.clearUploadData}"
render="info, upload" value="Clear Uploaded Data"
rendered="#{fileUploadBean.size>0}" />
<a4j:commandButton action="#{fileUploadBean.writeFile}"
value="Write file to Disk" rendered="#{fileUploadBean.size>0}" />
</h:panelGroup>
</h:form>
The following is the listener:
@ManagedBean
@SessionScoped
public class FileUploadBean implements Serializable {
private static final long serialVersionUID = -4664762090820133359L;
private ArrayList<UploadedText> files = new ArrayList<UploadedText>();
private static final String fPath = "/tmp";
public FileUploadBean() {
}
public void paint(OutputStream stream, Object object) throws IOException {
stream.write(getFiles().get((Integer) object).getData());
stream.close();
}
public void listener(FileUploadEvent event) throws Exception {
UploadedFile item = event.getUploadedFile();
UploadedText file = new UploadedText();
System.out.println(item.getData().length);
file.setLength(item.getData().length);
file.setName(item.getName());
file.setData(item.getData());
files.add(file);
}
public String clearUploadData() {
files.clear();
return null;
}
public int getSize() {
if (getFiles().size() > 0) {
return getFiles().size();
} else {
return 0;
}
}
public long getTimeStamp() {
return System.currentTimeMillis();
}
public ArrayList<UploadedText> getFiles() {
return files;
}
public void setFiles(ArrayList<UploadedText> files) {
this.files = files;
}
public void writeFile() {
FileOutputStream fop = null;
File file;
UploadedText contain = files.size() > 0 ? files.get(0) : null;
if (contain == null) {
return;
}
try {
file = new File(fPath + contain.getName());
fop = new FileOutputStream(file);
if (!file.exists()) {
file.createNewFile();
}
fop.write(contain.getData());
fop.flush();
fop.close();
} catch (IOException e) {
} finally {
try {
if (fop != null) {
fop.close();
}
} catch (IOException e) {
}
}
}
And the following is the UploadedText class.
public class UploadedText implements Serializable {
private static final long serialVersionUID = -3957467715082208719L;
private String name;
private String mime;
private long length;
private byte[] data;
public String getName() {
return name;
}
public void setName(String name) {
int extDot = name.lastIndexOf('.');
if (extDot > 0) {
String extension = name.substring(extDot + 1);
if ("txt".equals(extension)) {
mime = "text/plain";
} else if ("csv".equals(extension)) {
mime = "text/csv";
} else if ("pdf".equals(extension)) {
mime = "application/pdf";
} else {
mime = "text/unknown";
}
}
this.name = name;
}
// Follow getter and setter
When I click on upload button appears the progress bar and immediately disappears and in the glassfish log I see:
SEVERE: JSF1073: javax.faces.event.AbortProcessingException caught during processing of APPLY_REQUEST_VALUES 2 : UIComponent-ClientId=j_idt24:upload, Message=/file/upload.xhtml @20,54 fileUploadListener="#{fileUploadBean.listener(event)}": java.lang.NullPointerException
SEVERE: /file/upload.xhtml @20,54 fileUploadListener="#{fileUploadBean.listener(event)}": java.lang.NullPointerException
Where I'm wrong?
Thanks
