In an XPages application I would like to use the javaxt library to extract EXIF information from uploaded images.
My upload function runs in SSJS so my routine to check metadata looks as follwed (just a test)
try {
importPackage(javaxt.io);
var image = new javaxt.io.Image(tempFile);
if (image != null) {
print("image not null")
var height = image.getHeight();
if (height != null) {
print(height);
} else {
print("no height")
}
}
} catch (e) {
print("Upload.readMetaData: " + e.toString());
}
In the server console I get to see the following:
HTTP JVM: image not null
Upload.readMetaData: java.lang.NullPointerException
I wonder what statement I should make instead of image.getHeight() ?
Related
Project setup:
<java.version>1.8</java.version>
<spring.version>4.3.9.RELEASE</spring.version>
<spring.boot.version>1.4.3.RELEASE</spring.boot.version>
We have a REST controller that has a method to upload file like this:
#PostMapping("/spreadsheet/upload")
public ResponseEntity<?> uploadSpreadsheet(#RequestBody MultipartFile file) {
if (null == file || file.isEmpty()) {
return new ResponseEntity<>("please select a file!", HttpStatus.NO_CONTENT);
} else if (blueCostService.isDuplicateSpreadsheetUploaded(file.getOriginalFilename())) {
return new ResponseEntity<>("Duplicate Spreadsheet. Please select a different file to upload",
HttpStatus.CONFLICT);
} else {
try {
saveUploadedFiles(Arrays.asList(file));
} catch (IOException e) {
e.printStackTrace();
return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
}
return new ResponseEntity("Successfully uploaded - " + file.getOriginalFilename(), new HttpHeaders(),
HttpStatus.OK);
}
}
UPDATE:
I've tried this approach from an old example I found, but it doesn't compile cleanly, the MockMvcRequestBuilders.multipart method is not defined....
#Test
public void testUploadSpreadsheet_Empty() throws Exception {
String fileName = "EmptySpreadsheet.xls";
String content = "";
MockMultipartFile mockMultipartFile = new MockMultipartFile(
"emptyFile",
fileName,
"text/plain",
content.getBytes());
System.out.println("emptyFile content is '" + mockMultipartFile.toString() + "'.");
mockMvc.perform(MockMvcRequestBuilders.multipart("/bluecost/spreadsheet/upload")
.file("file", mockMultipartFile.getBytes())
.characterEncoding("UTF-8"))
.andExpect(status().isOk());
}
I believe MockMvcRequestBuilders.multipart() is only available since Spring 5. What you want is MockMvcRequestBuilders.fileUpload() that is available in Spring 4.
I used the C# sample of PDFViewSimpleTest
When opening a pdf, it automatically jumps to the second page.
Foxit does it too (so i guess they also use pdfTron), Adobe starts from page 1
I haven't got a clue why. The pdf can be found here: http://docdro.id/EDsbCcH
The code is really simple:
public bool OpenPDF(String filename)
{
try
{
PDFDoc oldDoc = _pdfview.GetDoc();
_pdfdoc = new PDFDoc(filename);
if (!_pdfdoc.InitSecurityHandler())
{
AuthorizeDlg dlg = new AuthorizeDlg();
if (dlg.ShowDialog() == DialogResult.OK)
{
if(!_pdfdoc.InitStdSecurityHandler(dlg.pass.Text))
{
MessageBox.Show("Incorrect password");
return false;
}
}
else
{
return false;
}
}
_pdfview.SetDoc(_pdfdoc);
_pdfview.SetPagePresentationMode(PDFViewCtrl.PagePresentationMode.e_single_page);
filePath = filename;
if (oldDoc != null)
{
oldDoc.Dispose();
}
}
catch(PDFNetException ex)
{
MessageBox.Show(ex.Message);
return false;
}
catch(Exception ex)
{
MessageBox.Show(ex.ToString());
return false;
}
this.Text = filename; // Set the title
return true;
}
Technically you can achieve by an OpenAction inside the Catalog directory of the PDF, that a PDF opens at a page, which is not the first page. But that isn't the case in your PDF. The PDF itself seems to be very trivial, without anything special.
My Foxit Reader version 8.2.1 does open this PDF normally at the first page.
Please try the latest version.
Official: https://www.pdftron.com/pdfnet/downloads.html
Nightly Stable/Production: http://www.pdftron.com/nightly/?p=stable/
I have a modal Navigation page with an image which acts like a button;
<Image Source ="share.png" HeightRequest="32" WidthRequest="32">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="On_Share" />
</Image.GestureRecognizers>
</Image>
And the method behind;
async void On_Share(object sender, EventArgs e)
{
if (CrossConnectivity.Current.IsConnected)
{
var message = "Share this";
var title = "Share";
await CrossShare.Current.Share(new ShareMessage { Text = message, Title = title}, new ShareOptions { ExcludedUIActivityTypes = new[] { ShareUIActivityType.PostToFacebook } });
}
else
{
NoInternetLabel.IsVisible = true;
}
}
I'm getting the error when I try to click on the share image/button. I've put breakpoints into the first line of the On_Share method & they're not being hit.
Warning: Attempt to present <UIActivityViewController: 0x141b60f70> on <Xamarin_Forms_Platform_iOS_ModalWrapper: 0x1419a0920> whose view is not in the window hierarchy!
Please note this works fine in Android, I'm only seeing issues in iOS. I'm not sure what is going on - I'm not trying to present any other windows or anything when I click the image. Regardless, the error appears before the process reaches the beginning of the On_Share method. What am I missing here?
EDIT: The method does get hit now, and I'm still getting the error. It must be trying to send up the share sheet and failing...
There was a problem with the Share plugin in the end - we resolved it by making part of the code recursive.
the GetVisibleViewController used to look like this;
UIViewController GetVisibleViewController()
{
var rootController = UIApplication.SharedApplication.KeyWindow.RootViewController;
if (rootController.PresentedViewController == null)
return rootController;
if (rootController.PresentedViewController is UINavigationController)
{
return ((UINavigationController)rootController.PresentedViewController).VisibleViewController;
}
if (rootController.PresentedViewController is UITabBarController)
{
return ((UITabBarController)rootController.PresentedViewController).SelectedViewController;
}
return rootController.PresentedViewController;
}
whereas it needed to cycle through to find the top UIViewController;
UIViewController GetVisibleViewController(UIViewController controller = null)
{
controller = controller ?? UIApplication.SharedApplication.KeyWindow.RootViewController;
if (controller.PresentedViewController == null)
return controller;
if (controller.PresentedViewController is UINavigationController)
{
return ((UINavigationController)controller.PresentedViewController).VisibleViewController;
}
if (controller.PresentedViewController is UITabBarController)
{
return ((UITabBarController)controller.PresentedViewController).SelectedViewController;
}
return GetVisibleViewController(controller.PresentedViewController);
}
I've raised the issue and submitted a pull request on the github
Please see the update question below (not the top one).
I tried to open any document type (especially PDF) on Liferay using this function. But I always get message Awt Desktop is not supported! as stated on the function. How can I enable the Awt Desktop? I tried searching over the internet and found nothing. Anyone help, pls? Thanks.
public void viewFileByAwt(String file) {
try {
File File = new File(getPath(file));
if (File.exists()) {
if (Desktop.isDesktopSupported()) {
Desktop.getDesktop().open(File);
} else {
System.out.println("Awt Desktop is not supported!");
}
} else {
//File is not exists
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
Source: http://www.mkyong.com/java/how-to-open-a-pdf-file-in-java/
UPDATE
As you see the code below, both mode (1 for download and 2 for preview) is working pretty well, but unfortunately the second mode (preview mode) is works only for PDF.
Now what I want to do is, while user clicking the preview button, files another than PDF (limited only for extension: DOC, DOCX, XLS, XLSX, ODT, ODS) must be converted to PDF first, and then display it on the browser with the same way as below code explained. Is it possible to do that? If it's too hard to have all of the converter on a function, then on a separated function each extension would be fine.
public StreamedContent getFileSelected(final StreamedContent doc, int mode) throws Exception {
//Mode: 1-download, 2-preview
try {
File localfile = new File(getPath(doc.getName()));
FileInputStream fis = new FileInputStream(localfile);
if (mode == 2 && !(doc.getName().substring(doc.getName().lastIndexOf(".") + 1)).matches("pdf")) {
localfile = DocumentConversionUtil.convert(doc.getName(), fis, doc.getName().substring(doc.getName().lastIndexOf(".") + 1), "pdf");
fis = new FileInputStream(localfile.getPath());
}
if (localfile.exists()) {
try {
PortletResponse portletResponse = (PortletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse();
HttpServletResponse res = PortalUtil.getHttpServletResponse(portletResponse);
if (mode == 1) res.setHeader("Content-Disposition", "attachment; filename=\"" + doc.getName() + "\"");
else if (mode == 2) res.setHeader("Content-Disposition", "inline; filename=\"" + doc.getName() + "\"");
res.setHeader("Content-Transfer-Encoding", "binary");
res.setContentType(getMimeType(localfile.getName().substring(localfile.getName().lastIndexOf(".") + 1)));
res.flushBuffer();
OutputStream out = res.getOutputStream();
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = fis.read(buffer)) != -1) {
out.write(buffer, 0, bytesRead);
buffer = new byte[4096];
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (fis != null)
fis.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
Liferay is a portal server; its user interface runs in a browser. AWT is the Java 1.0 basis for desktop UIs.
I don't think AWT is the way to display it.
Why can't you open the file and stream the bytes to the portlet using the application/pdf MIME type?
You have to first install openoffice on your machine
http://www.liferay.com/documentation/liferay-portal/6.1/user-guide/-/ai/openoffice
After configuring openoffice with liferay, you can use DocumentConversionUtil class from liferay to convert documents.
DocumentConversionUtil.convert(String id, InputStream is, String sourceExtension,String targetExtension)
Above code will return inputstream. After this conversion you can show pdf in your browser
Hope this helps you!!
I have another question about a "JDWP Error: 21" logged: Unexpected JDWP Error 21
I am trying to parse some XML I gather from a servlet into a J2ME MIDlet with the code below. So far unsuccessfully, I think due to the JDWP error on my HttpConnection how ever the InputStream is filled with XML and once parsed everything inside the Document is null.
Has anyone got and ideas about the JDWP error, and also does that code look like it should work?
In MIDlet I am using JSR-172 API javax.xml.parsers.*.
if(d==form1 && c==okCommand)
{
// Display Webpage
webPage = new TextBox(txtField.getString(),
"",
100000,
TextField.ANY
);
Display.getDisplay(this).setCurrent(webPage);
try
{
HttpConnection conn = (HttpConnection)Connector.open("http://localhost:8080/Blogging_Home/Interface?Page=Bloggers&Action=VIEW&Type=XML");
conn.setRequestMethod(HttpConnection.GET);
int rc = conn.getResponseCode();
getConnectionInformation(conn, webPage);
webPage.setString(webPage.getString() + "Starting....");
String methodString = getStringFromURL("");
if (rc == HttpConnection.HTTP_OK)
{
InputStream is = null;
is = createInputStream(methodString);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder;
Document document;
try
{
builder = factory.newDocumentBuilder();
document = builder.parse(is);
} catch (Exception e) {
e.printStackTrace();
}
}
else
{
webPage.setString(webPage.getString() + "ERROR:" + rc);
}
}
catch(Exception ex)
{
// Handle here
webPage.setString("Error" + ex.toString());
}