I have a problem with my project, I wanna to download a .txt file and save to any directory with Flutter WEB, I think I put the setup but It does not work. Now de .txt file display the content in the same tab of browser, but I want to download this file, here is my code:
void downloadFile(String url) {
html.AnchorElement anchorElement = new html.AnchorElement(href: url);
anchorElement.download = "plantilla_simulador.txt";
anchorElement.dispatchEvent(html.Event.eventType('MouseEvent', 'click'));
anchorElement.style.display = 'none';
anchorElement.click();
}
Perhaps you are trying to download file from another site.
Keep in mind that download attribute only works for same-origin URLs, or the blob: and data: schemes.
This code should download file:
html.AnchorElement(href: 'index.html')
..download = 'some_name.txt'
..style.display = 'none'
..click();
but this one should open file in browser:
html.AnchorElement(href: 'https://raw.githubusercontent.com/flutter/flutter/master/flutter_console.bat')
..download = 'some_name.txt'
..style.display = 'none'
..click();
Related
I want to create a button on a purchase order form to download in one file all the different item lines in a csv file.
I created a suitlet file and a user event script.
The user event script create a button that redirect on the url of my suitlet script to execute a function.
For now a create a file csv in a folder, but I don't know how redirect on the file url or to directly download the file
Load the file, get the url property (it's not a link to the NS record/file it's a download link), open the url.
In SuiteScript 1.0
var file = nlapiLoadFile('file_id');
var url = "https://system.netsuite.com" + file.getURL();
window.open(url, '_blank');
In SuiteScript 2.0
var filePath = file.load({
id: 'Images/Desert.jpg'
});
var url = file.url;
window.open(url, '_blank');
Is there any option to Open a PDF file that is available in local state folder (inside app installation directory) with the page number. There is one method (launchFileAsync) to open such files but I don't find any option to pass page number/index to open specific page.
Thank you! Any help is appreciated.
UWP provides the PdfDocument class for parsing PDF files, and this class provides the GetPage method for obtaining the object of the corresponding page (PdfPage) through the index.
This is simple code:
PdfDocument pdfDocument;
StorageFile file = await ApplicationData.Current.LocalFolder.GetFileAsync("xxx.pdf");
pdfDocument = await PdfDocument.LoadFromFileAsync(file);
using (var firstPage = pdfDocument.GetPage(0))
{
var stream = new InMemoryRandomAccessStream();
await firstPage.RenderToStreamAsync(stream);
// do something...
}
Here is the complete code example:
PDF document sample
I am trying to download an Excel file from MVC Ajax call, but everytime it downloads, I cannot open the file, because it says it is corrupted.
Following is my Ajax call:
function Download() {
$.ajax({
url: '/Home/ExcelDownload',
type: "POST",
success: function (result) {
if (result !== null || result !== "") {
$('<iframe src=' + result + ' frameborder="0" scrolling="no" id="myFrame"></iframe>')
.appendTo('body');
}
//var iframe = document.getElementById('invisible');
//iframe.src = result;
},
error: function (data) {
}
});}
From my controller I call the action method like this:
string host = Request.Url.Authority;
return Json("http://" + host + "/ExcelTemplates/EInvoiceTemplateNew.xlsm");
I am having macros enabled in Excel as well.
The file downloads properly but when I try to open it, it gives me a warning about being from a trusted source, and on clicking yes, I get another dialog saying "The workbook cannot be opened or repaired By Microsoft excel because it is corrupt".
Any help or suggestions or workarounds to make my code working.
Thanks In Advance!!!..
I'm not able to do a project and try the excel library right now as I'm at work, so I'm just doing this much quickly.
To start, I think you can get away from using ajax completely. Which is always nice because it's less code to maintain, you can use a normal anchor tag:
Download
This won't redirect the page, because the browser should interpret the content-disposition/Mime type, and just download the file.
Then you can try returning the file like this, where you first read the file (in this case into a stream, but you could do it as a byte[] as well as File has a overload for it), and then return it through your controller by using File and FileResult.
E.g:
public FileResult GetExcelDocument(int id)
{
string filePath = GetPathToDocumentWithId(id); //However you get the excel file path
return File(System.IO.File.OpenRead(filePath),
System.Web.MimeMapping.GetMimeMapping(filePath),
"filename.xlsm");
}
This website says that the content type/MIME of .xlsm is "application/vnd.ms-excel.sheet.macroEnabled.12", but I think GetMimeMapping should work.
Optionally, if you want the file to download in a new tab, you can set the target of the anchor tag to "_blank" and it should open a new tab and download the file there.
Let me know what the result is.
If you're set on using JQuery and ajax, I found this example which follows along your previous attempt:
From Here
var $idown; // Keep it outside of the function, so it's initialized once.
downloadURL : function(url) {
if ($idown) {
$idown.attr('src',url);
} else {
$idown = $('<iframe>', { id:'idown', src:url }).hide().appendTo('body');
}
},
Currently I am creating an application where I display an uploaded file from CollectionFS and display it using the CollectionFS url return. Locally the image loads and is displayed. However once I deploy the application to meteor.com the image url does not work. With the console indicating that the image path cannot be found.
CollectionFS returns this url for my image:
/cfs/contacts/75erhMtuwjn66fQH3_default1.png
Locally when I deploy the app I can see the image using in my .html:
img src="/cfs/contacts/75erhMtuwjn66fQH3_default1.png"
The specific code returned by CollectionFS is in the .html file and is being called client side:
{{cfsFileUrl "defaultHandler" fileId=fileId collection="Collection"}}
Locally I use this address as the source for the uploaded image in my html:
localhost:port/cfs/contacts/75erhMtuwjn66fQH3_default1.png
But when I attempt to view the image of the deployed app using the same procedure, it returns with an error of url not found:
http://host.meteor/cfs/contacts/75erhMtuwjn66fQH3_default1.png.com
A file is added on a click event client side .js:
'change .fileUploader': function (e) {
var files = e.target.files;
var fileName = files[0].name;
for (var i = 0, f; f = files[i]; i++) {
var k = ContactsFS.storeFile(f);
Session.set('fileID', k);
}}
Server side:
ContactsFS.fileHandlers({
default1: function(options) {
return {
blob: options.blob,
fileRecord: options.fileRecord // if no blob then save result in fileHandle (added createdAt)
};
}});
Then I can call the url in html with the given function from collectionFS documentation:
{{cfsFileUrl "default1" fileId=fileId collection="ContactsFS"}}
Once again the problem isn't generating the url. Both locally and once deployed the app displays a url. It is using the image url as the source for the image tag that is giving me the problem.
CollectionFS had a bug. I contacted the creator with the issue and it is now resolved in the collectionFS package. The report and closed issue can be found at:
https://github.com/raix/Meteor-CollectionFS/issues/85
I'm trying to upload data captured in a local html file on an iPad and save it to server.
I found this: Sending data to an external file via Ajax
So as far as I can understand, there is no way to send the info doing something like this:
ajax.open("POST",'http://www.misite.com/canvas/testSave.php',true);
from a html on the iPad, I'm right?
So I just want to know if anyone knows a trick to do this. Thanks!
After a couple of weeks this is what I could achieved.
1.- The function that sends the data (an image generated from a canvas):
function sendImageData()
{
var filename = $("#filename").val().trim();
if(filename == ''){
alert("File name is needed");
return;
}
var uploadCanvas = $("#uploadCanvas");
var canvasData = uploadCanvas[0].toDataURL("image/png");
var debugConsole= $("#debugConsole");
debugConsole.val(canvasData);
$.ajax({
type: 'POST',
url: "http://yourremoteserver.com/canvas/save.php",
data: {
canvasData:canvasData,
filename:filename
}
}).done(function() {
alert("saved: " + filename + ".png");// THIS IS NOT WORKING YET.
}
);
}
2.- The PHP that receives and saves the data:
<?php
$imagen = $_POST['canvasData'];
$filename = $_POST['filename'];
if (isset($imagen)){
$imageData=$imagen;
$filteredData=substr($imageData, strpos($imageData, ",")+1);
$unencodedData=base64_decode($filteredData);
$fp = fopen( $filename.'.png', 'wb' );
fwrite( $fp, $unencodedData);
fclose( $fp );
}
?>
If anyone can help me with the .done function to work (remember, the html file is in an ipad and the php on a server) let me know. Cheers.
I have used Plupload for this purpose. It automagically switches between flash, silverlight, and html5 so it should work on just about any browser (including the safari on the iPad). Basically, it uploads a file to a processing script with some generated id (it generates it for you). Then, you can poll another page to get the uploaded data once it is finished uploading.
EDIT: Re-reading your post I am not sure how pertinent this is since it requires the user to select a file and I'm not sure that's what you are getting at exactly.