Loads a document from existing data stored in a remote URL.
static loadFromUri(
uri: string,
options: LoadDocumentOptions
): JQueryPromise<LEADDocument>;
uri
The uri to get the data from. It can be the DocumentId string of a LEADDocument that is already in the cache.
options
The LoadDocumentOptions object to create the LEADDocument with.
A Promise object that can resolve successfully to a LEADDocument object, or fail if the LEADDocument cannot be created from the uri.
Note that the uri parameter can point to a document stored in HTTP, HTTPS, FTP, or Disk file (using file protocol).
If the uri parameter to this method points to a LEADDocument that was uploaded to the cache via UploadDocument/uploaddocumentblob or UploadFile/uploadfiledocument (verified via IsUploadDocumentUri), then this method performs just like LoadFromCache but with a uri instead of a document ID.
LoadFromUri creates a LEADDocument object from any supported image or document file format stored in a disk file or remote URL. The returned object can then be used to retrieve any page as image or SVG, to obtain the text using SVG or OCR, or to use the annotations or the document structure such as links and bookmarks.
Refer to Loading Using LEADTOOLS Document Library for detailed information on how to use this method and the various options available.
This example will load a PDF document stored in a remote URL.
import { DocumentHelper } from "../../utilities/DocumentHelper";
export class DocumentFactory_LoadFromUriExample {
private imgEle: HTMLElement;
public constructor() {
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/v200/LEADTOOLSEVAL.txt", "EVAL", null);
DocumentHelper.initFactory();
}
public run = (buttonID: string, imgID: string) => {
document.getElementById(buttonID).onclick = this.loadFromUri;
this.imgEle = document.getElementById(imgID);
}
/**
* Load a new document from URI
*/
loadFromUri = () => {
const url = "https://demo.leadtools.com/images/pdf/leadtools.pdf";
const loadDocumentOptions = new lt.Document.LoadDocumentOptions();
lt.Document.DocumentFactory.loadFromUri(url, loadDocumentOptions)
.done((document: lt.Document.LEADDocument) => {
DocumentHelper.log("Document loaded with " + document.pages.count + " pages", document);
// Show the PDF image of the first page
const page = document.pages.item(0);
(this.imgEle as HTMLImageElement).src = page.getSvgUrl(lt.Document.DocumentGetSvgOptions.none);
})
.fail(DocumentHelper.showServiceError);
}
}
export class DocumentHelper {
static showServiceError = (jqXHR, statusText, errorThrown) => {
alert("Error returned from service. See the console for details.");
const serviceError = lt.Document.ServiceError.parseError(jqXHR, statusText, errorThrown);
console.error(serviceError);
}
static log = (message: string, data?: any) => {
const outputElement = document.getElementById("output");
if (outputElement) {
const time = (new Date()).toLocaleTimeString();
const textElement = document.createElement("p");
textElement.innerHTML = (outputElement.childElementCount + 1) + " [" + time + "]: " + message;
outputElement.insertBefore(textElement, outputElement.firstChild);
}
if (!data)
console.log(message);
else
console.log(message, data);
}
static initFactory = () => {
// To communicate with the DocumentsService, it must be running!
// Change these parameters to match the path to the service.
lt.Document.DocumentFactory.serviceHost = "http://localhost:40000";
lt.Document.DocumentFactory.servicePath = "";
lt.Document.DocumentFactory.serviceApiPath = "api";
}
}
import { DocumentHelper } from "../../utilities/DocumentHelper";
export class DocumentFactory_LoadFromUriExample {
imgEle;
constructor() {
lt.RasterSupport.setLicenseUri("https://demo.leadtools.com/licenses/v200/LEADTOOLSEVAL.txt", "EVAL", null);
DocumentHelper.initFactory();
}
run = (buttonID, imgID) => {
document.getElementById(buttonID).onclick = this.loadFromUri;
this.imgEle = document.getElementById(imgID);
}
/**
* Load a new document from URI
*/
loadFromUri = () => {
const url = "https://demo.leadtools.com/images/pdf/leadtools.pdf";
const loadDocumentOptions = new lt.Document.LoadDocumentOptions();
lt.Document.DocumentFactory.loadFromUri(url, loadDocumentOptions)
.done((document) => {
DocumentHelper.log("Document loaded with " + document.pages.count + " pages", document);
// Show the PDF image of the first page
const page = document.pages.item(0);
this.imgEle.src = page.getSvgUrl(lt.Document.DocumentGetSvgOptions.none);
})
.fail(DocumentHelper.showServiceError);
}
}
export class DocumentHelper {
static showServiceError = (jqXHR, statusText, errorThrown) => {
alert("Error returned from service. See the console for details.");
const serviceError = lt.Document.ServiceError.parseError(jqXHR, statusText, errorThrown);
console.error(serviceError);
}
static log = (message, data) => {
const outputElement = document.getElementById("output");
if (outputElement) {
const time = (new Date()).toLocaleTimeString();
const textElement = document.createElement("p");
textElement.innerHTML = (outputElement.childElementCount + 1) + " [" + time + "]: " + message;
outputElement.insertBefore(textElement, outputElement.firstChild);
}
if (!data)
console.log(message);
else
console.log(message, data);
}
static initFactory = () => {
// To communicate with the DocumentsService, it must be running!
// Change these parameters to match the path to the service.
lt.Document.DocumentFactory.serviceHost = "http://localhost:40000";
lt.Document.DocumentFactory.servicePath = "";
lt.Document.DocumentFactory.serviceApiPath = "api";
}
}
<!doctype html>
<html lang="en">
<title>Document Example | LoadFromUri</title>
<head>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"
integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" crossorigin="anonymous"></script>
<script src="../../LT/Leadtools.js"></script>
<script src="../../LT/Leadtools.Controls.js"></script>
<script src="../../LT/Leadtools.Annotations.Engine.js"></script>
<script src="../../LT/Leadtools.Annotations.Designers.js"></script>
<script src="../../LT/Leadtools.Annotations.Rendering.Javascript.js"></script>
<script src="../../LT/Leadtools.Annotations.Automation.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Main.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Color.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Core.js"></script>
<script src="../../LT/Leadtools.ImageProcessing.Effects.js"></script>
<script src="../../LT/Leadtools.Document.js"></script>
<script src="../../LT/Leadtools.Document.Viewer.js"></script>
<link rel="stylesheet" type="text/css" href="../../css/examples.css">
<!-- All demo files are bundled and appended to the window -->
<script src="../../bundle.js" type="text/javascript"></script>
</head>
<body>
<div>
<button type="button" id="exampleButton">Run Example</button>
</div>
<div id="output"></div>
<div>
<img id="img" />
</div>
</body>
<script>
window.onload = () => {
const example = new window.examples.DocumentFactory.LoadFromUri();
example.run("exampleButton");
};
</script>
</html>
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document