React js pdftron not displayed

Question

我按照指南查看了一个pdf文件，但它无法正常工作。

有人能帮我吗？

链接：https://codesandbox.io/s/tender-hill-27ugg?file=/src/styles.css

代码：

import React, { useRef, useEffect } from "react";
import WebViewer from "@pdftron/webviewer";
import "./styles.css";
const App = () => {
const viewer = useRef(null);
// if using a class, equivalent of componentDidMount
useEffect(() => {
WebViewer(
{
path: "lib",
initialDoc:
"https://pdftron.s3.amazonaws.com/downloads/pl/webviewer-demo.pdf"
},
viewer.current
).then((instance) => {
/*const { docViewer, Annotations } = instance;
const annotManager = docViewer.getAnnotationManager();
docViewer.on("documentLoaded", () => {
const rectangleAnnot = new Annotations.RectangleAnnotation();
rectangleAnnot.PageNumber = 1;
// values are in page coordinates with (0, 0) in the top left
rectangleAnnot.X = 100;
rectangleAnnot.Y = 150;
rectangleAnnot.Width = 200;
rectangleAnnot.Height = 50;
rectangleAnnot.Author = annotManager.getCurrentUser();
annotManager.addAnnotation(rectangleAnnot);
// need to draw the annotation otherwise it won't show up until the page is refreshed
annotManager.redrawAnnotation(rectangleAnnot);
});*/
});
}, []);
return (
<div className="App">
<div className="header">React sample</div>
<div className="webviewer" ref={viewer}></div>
</div>
);
};
export default App;

Answer 1

这是一个完整的PDFTron WebViewer React示例，您可以参考：

https://github.com/PDFTron/webviewer-react-sample

您可以按照Readme.md进行安装和设置