I have several pdf files saved in ...WebContent/Manuals/filename.pdf that I am trying to display on my page. I am getting "Failed to Load PDF document" message in Chrome.
My Jsf:
<p:media value="#{reviewBean.manual}" player="pdf" height="600px" width="1000px" />
My #SessionScoped Bean:
public StreamedContent getManual() throws IOException {
String type = "application/pdf";
String path = "";
FacesContext context = FacesContext.getCurrentInstance();
if (context.getCurrentPhaseId() == PhaseId.RENDER_RESPONSE) {
return new DefaultStreamedContent();
} else {
path = "C:\\.....\\WebContent\\Manuals\\filename.pdf";
InputStream is = new ByteArrayInputStream(path.getBytes());
return new DefaultStreamedContent(is, type);
}
}
There is additional logic that i have left out for clarity which decides which pdf is displayed.
I have also tried the file path of /Manuals/filename.pdf as path
I tried following the below example:
How to bind dynamic content using <p:media>?
In my case I do not need to retrieve a value using <f:param
Is my file path incorrect to display the image? Or am I building the Stream incorrectly? Any guidance is much appreciated.
I solved this by merely returning the url as a String.
public String getManual() {
return user.getManuals().get(user.getLData().getDepart());
}
Where the returned value is the file path of the pdf: Manuals/filename.pdf
Related
I have a Blazor Application which had files uploaded to a upload folder on the web server. I am in the process of trying to figure out the code to download an uploaded file in the browser for retrieval and viewing. Right now the code is as below (the download part from code examples on the internet)
public void FileDetailsToolbarClickHandler(Syncfusion.Blazor.Navigations.ClickEventArgs args)
{
string path = null;
string uploads = System.IO.Path.Combine(System.IO.Directory.GetCurrentDirectory(), "wwwroot\\uploads");
path = uploads + "\\" + SelectedFileName;
if (args.Item.Text == "Delete")
{
//Code for Deleting goes here
//UploadRef.Remove();
if (System.IO.File.Exists(path))
{
System.IO.File.Delete(path);
}
FileDetailsService.FileDetailsDelete(SelectedFileId); //NavigationManager.NavigateTo($"/ServiceRequestNotes/servicerequestnoteadd");
NavigationManager.NavigateTo($"/ServiceRequests/serviceRequestsaddedit2/{Id}", forceLoad: true);
}
else
{
// its a download
IFileProvider provider = new PhysicalFileProvider(uploads);
IFileInfo fileinfo = provider.GetFileInfo(path + SelectedFileName);
var readStream = fileinfo.CreateReadStream();
var mimeType = "application/pdf";
return File(readStream, mimeType, SelectedFileName);
}
}
On the last statement I am a getting the following error message
non-invocable member 'File' cannot be used like a method error message
What am I missing or do I need to change or add to have the output from the readstream render to the browser?
The blazor application is a blazor server app not WASM. It does not make use of API controllers.
Any advice?
This is a void method. You can't return anything at all. Also, if you're trying to instantiate a File object, you'd have to use the new keyword.
This question already has an answer here:
Internet Explorer 9 does not use file name for inline attachments
(1 answer)
Closed 3 years ago.
I have a form that once completed opens a new tab and calls my bean method annonceReturn().
This method sends back a pdf file. The problem is that as I open a new tab with _blank, the URL ends with .xhtml. Even the filename is displayed as being in my exemple "list.xhtml" (the last part of the URL). The problem is that I can't download this file because it's not considerated as a pdf file.
This is my xhtml file :
<h:form id="form">
<p:commandButton id="envoiRetour" onclick="this.form.target = '_blank';"
actionListener="#{returnCtrl.announceReturn()}"
value="Open PDF in new tab"
ajax="false" />
</h:form>
This is the returnCtrl.annonceReturn() method :
public void announceReturn() throws MalformedURLException, FileNotFoundException, DocumentException, BadElementException, IOException, InterruptedException {
String referenceAnnouncement = "C:/Users/path_to_my_pdf_file.pdf";
FacesContext facesContext = FacesContext.getCurrentInstance();
ExternalContext externalContext = facesContext.getExternalContext();
HttpServletResponse response = (HttpServletResponse) externalContext.getResponse();
BufferedInputStream input = null;
BufferedOutputStream output = null;
try {
input = new BufferedInputStream(new FileInputStream(referenceAnnouncement), 10240);
response.reset();
response.setHeader("Content-type", "application/pdf");
response.setContentLength((int)new File(referenceAnnouncement).length());
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
response.setHeader("Content-disposition", "inline; filename=" + "file.pdf");
response.setHeader("pragma", "public");
output = new BufferedOutputStream(response.getOutputStream(), 10240);
byte[] buffer = new byte[10240];
int length;
while ((length = input.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
output.flush();
} finally {
output.close();
input.close();
}
}
How can I do to open this PDF in a new tab and be able to download it ?
When I try to download it, it says there is a network error (and it tries to save it as xhtml file).
EDIT : this is the question that helped me : How to open a PDF file in a new tab
EDIT 2 : the problem is not that the PDF doesn't show. The problem is that it shows in the new tab but when I try to download it, the explorer wants to save it as an XHTML file.
EDIT 3 : as mentionned here -> Open PDF in new tab, saving file gives wrong file name
it seems the filename is ignored if the disposition is not "attachment"... So I think I need to think about another way to do it.
Thanks for your time.
Try 'attachment' instead of 'inline' to force the browser saving the file (instead of trying to open with the associated plugin - if installed)
response.setHeader("Content-disposition", "attachment; filename=" + "file.pdf");
Hope it helps.
Beppe
Here is my code, hope it helps.
FacesContext fc = FacesContext.getCurrentInstance();
ExternalContext ec = fc.getExternalContext();
File temp = File("./path/abc.pdf");
temp.deleteOnExit();
ec.responseReset();
ec.setResponseContentType("application/pdf");
ec.setResponseContentLength((int)temp.length());
ec.setResponseHeader("Content-Disposition", "attachment; filename=\"" + temp.getName() + "\""); //inline;
OutputStream output = ec.getResponseOutputStream();
Files.copy(temp.toPath(), output);
fc.responseComplete();
I have tested in my project, here is the solution:
1 - Create button
<h:commandButton
onclick="this.form.target='_blank'"
id="cmdOpenPDF"
action="#{bean.openPDF(bean.code)}"
value="New PDF">
</h:commandButton>
2 - The bean has a function with a redirect link to PDF. This sample the pdf in the root folder.
public void openPDF(String code) throws Exception {
String filePdfName ="";
try {
//Make sure that this file in root
File pdf = new File("sample.pdf");
filePdfName = pdf.getName();
} catch (Exception ex) {
ex.printStackTrace();
}
ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
ec.redirect(ec.getRequestContextPath() + "/" + filePdfName);
}
I am attempting to generate a PDF file that contains object information and then attach it to another object that is stored in the database. The attachmentable plugin I am using is working now for user end attachments, but I need my system to be able to do it automatically.
I am using:
Grails 1.3.9
Attachmentable 0.3.0 http://grails.org/plugin/attachmentable
Rendering 0.4.3 http://grails.org/plugin/rendering
I have been able to generate and display the pdf, but do not know how to attach it using the attachmentable plugin. I need some way to take the generated pdf byte array and convert it to a MultipartFile for the attachmentable plugin function I call. The error I get shows that my argument types are invalid.
I save object1 and object2, then generate the pdf of object1 and try to attach it to object2.
Thanks in advance for you help!
Thing1 Controller Snippets:
ByteArrayOutputStream bytes = pdfRenderingService.render(template: "/thing1/pdf", model: [thing1: thing1])
attachmentableService.addAttachment("unknown", thing2.id, bytes)
AttachmentableService function I am attempting to call:
def addAttachment(def poster, def reference, CommonsMultipartFile file) {
addAttachment(CH.config, poster, reference, file)
}
def addAttachment(def config,
def poster,
def reference,
CommonsMultipartFile file) {
if (reference.ident() == null) {
throw new AttachmentableException(
"You must save the entity [${delegate}] before calling addAttachment.")
}
if (!file?.size) {
throw new EmptyFileException(file.name, file.originalFilename)
}
String delegateClassName = AttachmentableUtil.fixClassName(reference.class)
String posterClass = (poster instanceof String) ? poster : AttachmentableUtil.fixClassName(poster.class.name)
Long posterId = (poster instanceof String) ? 0L : poster.id
String filename = file.originalFilename
// link
def link = AttachmentLink.findByReferenceClassAndReferenceId(
delegateClassName, reference.ident())
if (!link) {
link = new AttachmentLink(
referenceClass: delegateClassName,
referenceId: reference.ident())
}
// attachment
Attachment attachment = new Attachment(
// file
name: FilenameUtils.getBaseName(filename),
ext: FilenameUtils.getExtension(filename),
length: 0L,
contentType: file.contentType,
// poster
posterClass: posterClass,
posterId: posterId,
// input
inputName: file.name)
link.addToAttachments attachment
if (!link.save(flush: true)) {
throw new AttachmentableException(
"Cannot create Attachment for arguments [$user, $file], they are invalid.")
}
// save file to disk
File diskFile = AttachmentableUtil.getFile(config, attachment, true)
file.transferTo(diskFile)
attachment.length = diskFile.length()
// interceptors
if(reference.respondsTo('onAddAttachment')) {
reference.onAddAttachment(attachment)
}
attachment.save(flush:true) // Force update so searchable can try to index it again.
return reference
}
Grails runtime error:
groovy.lang.MissingMethodException: No signature of method: com.macrobit.grails.plugins.attachmentable.services.AttachmentableService.addAttachment() is applicable for argument types: (java.lang.String, java.lang.Long, java.io.ByteArrayOutputStream) values: [unknown, 80536, %PDF-1.4 and a long string of unreadable data...]
Possible solutions: addAttachment(java.lang.Object, java.lang.Object, org.springframework.web.multipart.commons.CommonsMultipartFile), addAttachment(java.lang.Object, java.lang.Object, java.lang.Object, org.springframework.web.multipart.commons.CommonsMultipartFile)
Service Method I Added:
def customAddMethod(def poster, def reference, def pdfBytes) {
customAddMethod(CH.config, poster, reference, pdfBytes)
}
def customAddMethod(def config,
def poster,
def reference,
def pdfBytes) {
if (reference.ident() == null) {
throw new AttachmentableException(
"You must save the entity [${delegate}] before calling customAddMethod.")
}
String delegateClassName = AttachmentableUtil.fixClassName(reference.class)
String posterClass = (poster instanceof String) ? poster : AttachmentableUtil.fixClassName(poster.class.name)
Long posterId = (poster instanceof String) ? 0L : poster.id
String filename = "File Name"
// link
def link = AttachmentLink.findByReferenceClassAndReferenceId(
delegateClassName, reference.ident())
if (!link) {
link = new AttachmentLink(
referenceClass: delegateClassName,
referenceId: reference.ident())
}
// attachment
Attachment attachment = new Attachment(
// file
name: "File Name",
ext: "pdf",
length: 0L,
contentType: "application/pdf",
// poster
posterClass: posterClass,
posterId: posterId,
// input
inputName: "File Name")
link.addToAttachments attachment
if (!link.save(flush: true)) {
throw new AttachmentableException(
"Cannot create Attachment for arguments [$user, $file], they are invalid.")
}
// save file to disk
byte[] bytes = pdfBytes.toByteArray(); //convert ByteArrayOutputStream to ByteArray
File diskFile = AttachmentableUtil.getFile(config, attachment, true) //file path
FileOutputStream fos = new FileOutputStream(diskFile); //open file output stream to write to
fos.write(bytes); //write rendered pdf bytes to file
fos.flush();
fos.close();
attachment.length = diskFile.length()
// interceptors
if(reference.respondsTo('onAddAttachment')) {
reference.onAddAttachment(attachment)
}
attachment.save(flush:true) // Force update so searchable can try to index it again.
return reference
}
It looks like the AttachmentableService you referenced (from the Attachmentable plugin) assumes it's dealing with a file-upload scenario, such that you could easily grab the MultipartFile instance via request.getFile(). That's not the case for you - you're creating the file via the Rendering plugin, and you want that file attached to a domain object, right?
You could try constructing a CommonsMultipartFile instance manually by first writing the pdf bytes to disk, and then create a DiskFileItem via DiskFileItemFactory.
See this post for an example of what I'm thinking:
How to make CommonsMultipartFile from absolute file path?
Another, better, option might be to checkout that plugin's source and add a method that doesn't require you to go through those gyrations - perhaps a version of the addAttachment method that accepts a File or an OutputStream instead - and submit a PR to the plugin author.
(Looks like they're adding an 'addAttachment' method to qualifying domain objects, which also expects a CommonsMultipartFile).
Otherwise, you might just have to create your own service to basically provide the same end result, which apparently is to create an AttachmentLink and associated Attachment instance.
How do I open an existing file on the server when a user clicks an actionlink? The following code works for downloading a file but I want to open a new browser window, or tab, and display the file contents.
public ActionResult Download()
{
return File(#"~\Files\output.txt", "application/text", "blahblahblah.txt");
}
You must add "inline" for a new tab.
byte[] fileBytes = System.IO.File.ReadAllBytes(contentDetailInfo.ContentFilePath);
Response.AppendHeader("Content-Disposition", "inline; filename=" + contentDetailInfo.ContentFileName);
return File(fileBytes, contentDetailInfo.ContentFileMimeType);
The way you're using the File() method is to specify a file name in the third argument, which results in a content-disposition header being sent to the client. This header is what tells a web browser that the response is a file to be saved (and suggests a name to save it). A browser can override this behavior, but that's not controllable from the server.
One thing you can try is to not specify a file name:
return File(#"~\Files\output.txt", "application/text");
The response is still a file, and ultimately it's still up to the browser what to do with it. (Again, not controllable from the server.) Technically there's no such thing as a "file" in HTTP, it's just headers and content in the response. By omitting a suggested file name, the framework in this case may omit the content-disposition header, which is your desired outcome. It's worth testing the result in your browser to see if the header is actually omitted.
Use a target of blank on your link to open it in a new window or tab:
Download File
However, forcing the browser to display the contents is out of your control, as it entirely depends on how the user has configured their browser to deal with files that are application/text.
If you are dealing with text, you can create a view and populate the text on that view, which is then returned to the user as a regular HTML page.
please try this and replace your controller name and action name in html action link
public ActionResult ShowFileInNewTab()
{
using (var client = new WebClient()) //this is to open new webclient with specifice file
{
var buffer = client.DownloadData("~\Files\output.txt");
return File(buffer, "application/text");
}
}
OR
public ActionResult ShowFileInNewTab()
{
var buffer = "~\Files\output.txt"; //bytes form this
return File(buffer, "application/text");
}
this is action link which show in new blank tab
<%=Html.ActionLink("Open File in New Tab", "ShowFileInNewTab","ControllerName", new { target = "_blank" })%>
I can´t vote your answered as is useful, follow dow. Thanks very much !
public FileResult Downloads(string file)
{
string diretorio = Server.MapPath("~/Docs");
var ext = ".pdf";
file = file + extensao;
var arquivo = Path.Combine(diretorio, file);
var contentType = "application/pdf";
using (var client = new WebClient())
{
var buffer = client.DownloadData(arquivo);
return File(buffer, contentType);
}
}
When I upload an image file to a blob, the image is uploaded apparently successfully (no errors). When I go to cloud storage studio, the file is there, but with a size of 0 (zero) bytes.
The following is the code that I am using:
// These two methods belong to the ContentService class used to upload
// files in the storage.
public void SetContent(HttpPostedFileBase file, string filename, bool overwrite)
{
CloudBlobContainer blobContainer = GetContainer();
var blob = blobContainer.GetBlobReference(filename);
if (file != null)
{
blob.Properties.ContentType = file.ContentType;
blob.UploadFromStream(file.InputStream);
}
else
{
blob.Properties.ContentType = "application/octet-stream";
blob.UploadByteArray(new byte[1]);
}
}
public string UploadFile(HttpPostedFileBase file, string uploadPath)
{
if (file.ContentLength == 0)
{
return null;
}
string filename;
int indexBar = file.FileName.LastIndexOf('\\');
if (indexBar > -1)
{
filename = DateTime.UtcNow.Ticks + file.FileName.Substring(indexBar + 1);
}
else
{
filename = DateTime.UtcNow.Ticks + file.FileName;
}
ContentService.Instance.SetContent(file, Helper.CombinePath(uploadPath, filename), true);
return filename;
}
// The above code is called by this code.
HttpPostedFileBase newFile = Request.Files["newFile"] as HttpPostedFileBase;
ContentService service = new ContentService();
blog.Image = service.UploadFile(newFile, string.Format("{0}{1}", Constants.Paths.BlogImages, blog.RowKey));
Before the image file is uploaded to the storage, the Property InputStream from the HttpPostedFileBase appears to be fine (the size of the of image corresponds to what is expected! And no exceptions are thrown).
And the really strange thing is that this works perfectly in other cases (uploading Power Points or even other images from the Worker role). The code that calls the SetContent method seems to be exactly the same and file seems to be correct since a new file with zero bytes is created at the correct location.
Does any one have any suggestion please? I debugged this code dozens of times and I cannot see the problem. Any suggestions are welcome!
Thanks
The Position property of the InputStream of the HttpPostedFileBase had the same value as the Length property (probably because I had another file previous to this one - stupid I think!).
All I had to do was to set the Position property back to 0 (zero)!
I hope this helps somebody in the future.
Thanks Fabio for bringing this up and solving your own question. I just want to add code to whatever you have said. Your suggestion worked perfectly for me.
var memoryStream = new MemoryStream();
// "upload" is the object returned by fine uploader
upload.InputStream.CopyTo(memoryStream);
memoryStream.ToArray();
// After copying the contents to stream, initialize it's position
// back to zeroth location
memoryStream.Seek(0, SeekOrigin.Begin);
And now you are ready to upload memoryStream using:
blockBlob.UploadFromStream(memoryStream);