This question already has answers here:
Why do I have to close the ZipOutputStream in a certain way in this situation?
(2 answers)
Closed 6 years ago.
im trying to implement a download all functionality, my requirement is file should be compressed in .zip, heres the UI
<p:toolbar>
<f:facet name="right">
<p:commandButton value="Download all photos" ajax="false" actionListener="#{ManageActivities.getAllParticipantPhoto}" onclick="PrimeFaces.monitorDownload(start, stop);" icon="ui-icon-image">
<p:fileDownload value="#{ManageActivities.file}" />
</p:commandButton>
</f:facet></p:toolbar>
and here is the managedbean code
private StreamedContent file;
public void getAllParticipantPhoto() {
ByteArrayInputStream bis = new ByteArrayInputStream(zipBytes());
InputStream stream = bis;
file = new DefaultStreamedContent(stream, "zip", "photos.zip");
}
private byte[] zipBytes () {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ZipOutputStream zos = new ZipOutputStream(baos);
try{
for(Participants p : partcpnts){
if(p.getPhoto() != null){
ZipEntry entry = new ZipEntry(p.getFirstName()+".jpg");
zos.putNextEntry(entry);
zos.write(p.getPhoto());
}
}
}catch(Exception e){
e.printStackTrace();
}
return baos.toByteArray();
}
i can download file as ZIP successfully but i am unable to extract it, windows is prompting the'cannot open file as archive' error
changing
file = new DefaultStreamedContent(stream, "zip", "photos.zip");
to
file = new DefaultStreamedContent(stream, "application/zip", "photos.zip", Charsets.UTF_8.name());
fixed it
Related
and I cant' store file more than 10Mb
the primary problrm is why doesn't except pdf file???
this is my ManagedBean
file upload function :-
public void fileUploadListener(FileUploadEvent e) throws IOException, Exception {
this.file = e.getFile();
File oStream = new File("c:\\test.pdf");
courseResourceBean.update(item);
oStream.createNewFile();
Long sss = file.getSize();
InputStream inputStream = file.getInputstream();
FileOutputStream outputStream = new FileOutputStream(oStream);
byte[] buffer = new byte[sss.byteValue()];
int lenght;
while ((lenght = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, lenght);
}
outputStream.close();
FacesContext.getCurrentInstance().addMessage(null, new FacesMessage("File Uploaded Successfully" + file.getSize()));
String extension = file.getContentType();
}
file download function :-
public void prepDownload(Long id) throws Exception {
File files = new File("c:\\test.pdf");
InputStream input = new FileInputStream(files);
ExternalContext externalContext = FacesContext.getCurrentInstance().getExternalContext();
setDownload(new DefaultStreamedContent(input, externalContext.getMimeType(files.getName()), files.getName()));
System.out.println("PREP = " + download.getName());
}
and this is the xhtml page
upload :-
<p:outputLabel value="#{msg.courseName}, #{msg.inArabic}" style="text-align: right"/>
<p:fileUpload value="#{courseResourceMB.file}" mode="advanced" sizeLimit="200000000000"
fileUploadListener="#{courseResourceMB.fileUploadListener}" update="msg11" >
</p:fileUpload>
downlad:-
<p:commandButton id="downloadLink" value="Download" actionListener="#{courseResourceMB.prepDownload(item.id)}" ajax="false">
<p:fileDownload value="#{courseResourceMB.download}" />
</p:commandButton>
Sorry for my poor english but I really want to show two pdf reports from jasper report at the same time in differents tabs on browser. I´m working with java jsf, primefaces. The principal idea is when the button is clicked show this reports in diferents tabs. I try to do this:
I have this in the Managed Bean:
public void showReports() {
RequestContext.getCurrentInstance().execute("document.getElementById('fromGeneral:rep2').click();");
RequestContext.getCurrentInstance().execute("document.getElementById('fromGeneral:rep3').click();");
}
public void printReport(String name) {
try {
Map<String, Object> mapParametros = new HashMap<>();
mapParametros.put("CORR", corr);
printJasper(mapParametros, new File("/Jasper/Reports/" + name));
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
public void printJasper(Map<String, Object> reportValues, File fileJ) {
ByteArrayInputStream input = null;
BufferedOutputStream output = null;
FacesContext facesContext = FacesContext.getCurrentInstance();
ExternalContext externalContext = facesContext.getExternalContext();
HttpServletResponse response = (HttpServletResponse) externalContext.getResponse();
try {
facesContext = FacesContext.getCurrentInstance();
externalContext = facesContext.getExternalContext();
response = (HttpServletResponse) externalContext.getResponse();
FileInputStream file = new FileInputStream(fileJ);
JasperReport compiledTemplate = (JasperReport) JRLoader.loadObject(file);
ByteArrayOutputStream out = new ByteArrayOutputStream();
JasperPrint jasperPrint = JasperFillManager.fillReport(compiledTemplate, reportValues, dataSourceP.getConnection());
JRExporter exporter = new JRPdfExporter();
exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, out);
exporter.setParameter(JRPdfExporterParameter.PDF_JAVASCRIPT, "this.print();");
exporter.exportReport();
input = new ByteArrayInputStream(out.toByteArray());
response.reset();
response.setHeader("Content-Type", "application/pdf");
response.setHeader("Content-Length", String.valueOf(out.toByteArray().length));
response.setHeader("Content-Disposition", "inline; filename=\"ticket.pdf\"");
output = new BufferedOutputStream(response.getOutputStream(), Constants.DEFAULT_BUFFER_SIZE);
byte[] buffer = new byte[Constants.DEFAULT_BUFFER_SIZE];
int length;
while ((length = input.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
output.flush();
} catch (Exception exception) {
System.out.println(exception.getMessage());
} finally {
try {
if (output != null) {
output.close();
}
if (input != null) {
input.close();
}
} catch (Exception exception) {
/* ... */
}
}
facesContext.responseComplete();
}
An this in my view:
<h:form>
<p:commandButton value="Show them" action="#{reportBean.showReports()}"/>
<p:commandButton value="REPORT 1" id="rep1" style="font-size: 25px; float:right;visibility: hidden;" action="#{reportBean.printReport("Report1")}" ajax="false" onclick="this.form.target = '_blank';"/>
<p:commandButton value="REPORT 2" id="rep2" style="font-size: 25px; float:right;visibility: hidden;" action="#{reportBean.printReport("Report2")}" ajax="false" onclick="this.form.target = '_blank';"/>
</h:form>
But doesn´t work, it just show the second report.
Help!.
Thanks!
Try a hit using p:commandLink like i am using.
<p:commandLink id="PreviewR1" value="Print Preview" ajax="false" action="#{reportBean.printReport("Report1")}" target="_blank" />
<p:commandLink id="PreviewR2" value="Print Preview" ajax="false" action="#{reportBean.printReport("Report2")}" target="_blank" />
It will open the report 1 & 2 in separate browser tab while your original web page will remains the same.
You just don't click the correct buttons:
public void showReports() {
RequestContext.getCurrentInstance().execute("document.getElementById('fromGeneral:rep2').click();");
RequestContext.getCurrentInstance().execute("document.getElementById('fromGeneral:rep3').click();");
}
You're clicking on rep2 and rep3. rep3 doesn't exists, you need to click on rep1 instead. That should be the reason why only the 2nd report is shown.
Finally I found other way to solve it.
The method showReports() instead to click two buttons, this open two xhtml that each one has inside of <h.form> a remotecommand with autorun true, that show the reports. I don´t know if it´s the best way to do it, but It works.
Thanks for all your comments
I have created Pdf file on click action of Print button using Apache PDFBox api as shown below. As of now I saved that file into my drive(file system). What I need is to open up Pdf file directly into browser without saving into drive so that it can be print or download as require.
TestPdfBean.java
#ManagedBean(name = "pdfBean")
#ViewScoped
public class TestPdfBean implements Serializable {
public void createAndOpenPdf() {
PDDocument document = new PDDocument();
PDPage page = new PDPage();
document.addPage(page);
PDFont font = PDType1Font.HELVETICA;
PDPageContentStream content = new PDPageContentStream(doc,page);
content.beginText();
content.setFont(font, 12);
content.moveTextPositionByAmount(100, 700);
content.drawString(" Generating Pdf content...");
content.endText();
content.close();
document.save("/home/ck/Test/test.pdf");
document.close();
}
}
Code snippet of test.xhtml
<h:form id="pdfForm">
<p:panelGrid columns="2">
<h:outputText value="Create Pdf file.." />
<p:commandButton value="Print" actionListener="#{pdfBean.createAndOpenPdf}" />
</p:panelGrid>
</h:form>
I have deployed above portlet into liferay-portal-6.1.1.
Is there any way to open up pdf file directly into browser by Primefaces Or by Jsf Or by Liferay ?
I would recommend that you take a look at the Liferay Faces jsf2-export-pdf-portlet demo for Liferay 6.1. It has an example of a JSF 2.x ResourceHandler that enables the PDF to be generated and downloaded.
Create an HttpServlet and give back the PDF in the response.
Then just link your commandButton to the URL of the servlet and you´re done ...
The browser will open the document if you return a ByteArrayOutputStream.
`FacesContext context = FacesContext.getCurrentInstance();
HttpServletResponse response = (HttpServletResponse) context.getExternalContext().getResponse();
response.setContentType("application/pdf");
response.setHeader("Content-disposition", "attachement;filename=Quote_.pdf");
response.encodeRedirectURL("_blank");
byte[] bytes = printPDFBean.createQuotationPDF(current, cfgDoc, cfgEntity, quoteDetailList, customer).toByteArray();
response.getOutputStream().write(bytes);
context.responseComplete();`
This code calls my createQuotationPDF method which returns ByteArrayOutputStream object. The issue is, the document is opened in the current window and not a new one.
`public ByteArrayOutputStream createQuotationPDF(Quotation currentQuote, CfgDoc cfgDoc, CfgEntity cfgEntity, List<QuotationDetail> quoteDetailList, Customer customer) {
String filePath = FacesContext.getCurrentInstance().getExternalContext().getRealPath("/");
String imagesFolder = filePath + FacesContext.getCurrentInstance().getExternalContext().getInitParameter("smefin.images");
String fontsFolder = filePath + FacesContext.getCurrentInstance().getExternalContext().getInitParameter("smefin.fonts");
PDDocument doc = null;
PDPage page = null;
ByteArrayOutputStream output;
output = new ByteArrayOutputStream();
try {
doc = new PDDocument();
page = new PDPage();
doc.addPage(page);
File fontLatoBlackFile = new File(fontsFolder + "Lato-Black.ttf");
File fontLatoLiteFile = new File(fontsFolder + "Lato-Light.ttf");
Encoding encoding = new WinAnsiEncoding();
PDFont fontLatoBold = PDTrueTypeFont.load(doc, fontLatoBlackFile, encoding);
PDFont fontLatoLite = PDTrueTypeFont.load(doc, fontLatoLiteFile, encoding);
content.beginText();
content.setFont(fontLatoBold, 11);
content.newLineAtOffset(50, 60);
content.showText("Text");
content.endText();
}
doc.save("D:/TestData/Quote_.pdf");
doc.close();
} catch (Exception e) {
System.out.println("" + e);
}
return output;
}`
I need to read an Excel file and display its content.
I have a backing bean code which reads a particular Excel file and displays its content in the console. I have to display the contents inside a text editor. Using PrimeFaces I have got the <p:fileUpload> and <p:editor>.
Here's the bean:
public void handleFileUpload(FileUploadEvent event) {
FacesMessage msg = new FacesMessage("Succesful", event.getFile().getFileName() + " is uploaded.");
FacesContext.getCurrentInstance().addMessage(null, msg);
}
public String convertjava(String b) {
try
{
FileInputStream file = new FileInputStream(new File(""));
// Get the workbook instance for XLS file
HSSFWorkbook workbook = new HSSFWorkbook(file);
// Get first sheet from the workbook
HSSFSheet sheet = workbook.getSheetAt(0);
// Iterate through each rows from first sheet
Iterator<Row> rowIterator = sheet.rowIterator();
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
// For each row, iterate through each columns
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
switch (cell.getCellType()) {
case Cell.CELL_TYPE_BOOLEAN:
cell.getBooleanCellValue();
break;
case Cell.CELL_TYPE_NUMERIC:
cell.getNumericCellValue();
break;
case Cell.CELL_TYPE_STRING:
cell.getStringCellValue();
break;
}
}
System.out.println("");
}
file.close();
FileOutputStream out = new FileOutputStream(new File(""));
workbook.write(out);
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
System.out.println("error");
}
}
Here's the Facelet:
<h:body>
<h:form enctype="multipart/form-data">
<p:fileUpload fileUploadListener="#{uploadBean.handleFileUpload}"
mode="advanced" update="display" auto="true" sizeLimit="10000000"
allowTypes="/(\.|\/)(xls|xlsx)$/" />
<p:growl id="display" showDetail="true" />
<h:commandButton action="#{uploadBean.convertjava}"
value="Excel Report" />
</h:form>
<br />
</h:body>
Here I am totally blank that how to call that convertJava() method through JSF tags and display the read excel values inside an text editor.
You should get hold of the uploaded file in the file upload listener method. You are currently nowhere doing that. You're basically completely ignoring the uploaded file. This makes indeed no sense.
Assign it as a property of the (view scoped) bean as follows:
private UploadedFile uploadedFile;
public void handleFileUpload(FileUploadEvent event) {
uploadedFile = event.getFile();
// ...
}
Then just feed its InputStream to HSSFWorkbook constructor. You're currently attempting to read a non-existing file. This makes indeed no sense. You should be reading the uploaded file. Replace the nonsensicial
FileInputStream file = new FileInputStream(new File(""));
HSSFWorkbook workbook = new HSSFWorkbook(file);
// ...
by
InputStream input = uploadedFile.getInputStream();
HSSFWorkbook workbook = new HSSFWorkbook(input);
// ...
By the way, inside the loop over the Excel cells, you're also nowhere assigning the found data to a property/variable. All with all, it seems that your root mistake is that you keep ignoring values provided to you instead of assigning them to variables for later reuse/redisplay. This problem is in turn not exactly related to JSF, but just to basic Java. Therefore I recommend to take a JSF pause and make an effort of learning basic Java.
This question already has answers here:
How to provide a file download from a JSF backing bean?
(5 answers)
Closed 5 years ago.
I want to download a .txt/.log file saved in hard disk in JSF, am not getting any error but the issue is am not able to download the file, need some help..
note : am trying to zip the file first and then download.
I have tried :
response.setContentType("text/html");
response.setContentType("text/plain");
Code in page.xhtml:
<h:form>
<a4j:outputPanel id="downloadPanel">
<table><tr>
<td>
<h:commandButton id="dldFiles" title="Download File" image="/images/download.png"
style="width:20px; height:20px;"/>
</td>
<td>
<h:outputText value="Download log file" style="font-size: 11px; color:#56ADF8; font-weight: bold; cursor:pointer;"/>
</td>
</tr></table>
<a4j:support event="onclick" action="#{sqlLoaderAction.downloadFile}" reRender="uploadForm"></a4j:support>
</a4j:outputPanel>
</rich:panel>
</h:form>
In Actin Bean Methods:
public String downloadFile(){
System.out.println("--inside exportGoogleFeed--");
FacesContext fc = FacesContext.getCurrentInstance();
try{
User user = getUserBean();
Object sp = getServiceProxy(user);
HttpServletResponse response = ((HttpServletResponse)fc.getExternalContext().getResponse());
fc.responseComplete();
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition","attachment;filename=downloadname.zip");
OutputStream respOs = response.getOutputStream();
String dldFileName = "SQLLDR_28.txt";
PrintWriter pw1 = new PrintWriter(new FileWriter(dldFileName , false));
BufferedReader readbuffer = new BufferedReader(new FileReader("D:/Sqlldr_Container/downloadFile.txt"));
String strRead;
while((strRead=readbuffer.readLine())!=null){
pw1.println(strRead);
}
pw1.close();
File fil = new File(dldFileName);
ZipUploadStatusFile(dldFileName, respOs);
boolean bool = fil.delete();
System.out.println("-------Temp file Created deleted - "+bool+" ------------");
readbuffer.close();
}
catch (UnAuthenticatedException e) {
e.printStackTrace();
} /*catch (UnAuthorizedAccessException e) {
e.printStackTrace();
}*/ catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
public static void ZipUploadStatusFile(String fileName, OutputStream respOs){
try{
ZipOutputStream out = new ZipOutputStream(respOs);
byte[] data = new byte[1000];
BufferedInputStream in = new BufferedInputStream
(new FileInputStream(fileName));
int count;
out.putNextEntry(new ZipEntry(fileName));
while((count = in.read(data,0,1000)) != -1){
out.write(data, 0, count);
}
in.close();
out.flush();
out.close();
System.out.println("Your file is zipped");
}catch(Exception e){
e.printStackTrace();
}
}
After executing the above method am getting below screen:
Thank you.....
You can't download files by ajax. JavaScript has due to security reasons no facilities to force a Save As dialogue. The best it could do in your particular case is to display the response inline.
Get rid of the <a4j:support> and make it a fullworthy synchronous request by putting the action method straight in the <h:commandButton>.
This is the code that will fulfill the needs of downloading text file in to client system.
public String downloadFileText() {
File file = new File(GlobalPath);
HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();
response.setHeader("Content-Disposition", "attachment;filename=file.txt");
response.setContentLength((int) file.length());
ServletOutputStream out = null;
try {
FileInputStream input = new FileInputStream(file);
byte[] buffer = new byte[1024];
out = response.getOutputStream();
int i = 0;
while ((i = input.read(buffer)) != -1) {
out.write(buffer);
out.flush();
}
FacesContext.getCurrentInstance().getResponseComplete();
} catch (IOException err) {
err.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
}
} catch (IOException err) {
err.printStackTrace();
}
}
return null;
}
I dont think that the code will run fine because the code is in JSF MAnaged beans and it is running at server side, so file will be downloaded at the system where application server is running, now what you need to do is to check , use two pcs,
In one pc deploy the web and try to download file from other pc, then check the behaviour of code, if the file could be downloaded in client pc then thats fine other wise you need to find alternatives