我正在尝试使用PDF.js库在React的Web应用程序中呈现PDF文件。即使在正式的git中,也有很多不同的信息,所以我坚持尝试呈现整个pdf文档,并且还具有转到特定页面的功能。这就是我现在拥有的:
import * as pdfWorker from 'pdfjs-dist/build/pdf.worker'
import PdfJsLib from 'pdfjs-dist';
import 'pdfjs-dist/web/pdf_viewer.css';
import * as pdfjsViewer from 'pdfjs-dist/web/pdf_viewer';
...
componentDidMount() {
let container = this.viewerContainer.current;
let viewer = this.viewer.current;
PdfJsLib.GlobalWorkerOptions.workerSrc = pdfWorker;
PdfJsLib.getDocument(this.props.file).then((pdf) => {
this.setState({numPages: pdf.numPages});
this.pdfLinkService = new pdfjsViewer.PDFLinkService();
this.pdfFindController = new pdfjsViewer.PDFFindController({
linkService: this.pdfLinkService,
});
this.pdfViewer = new pdfjsViewer.PDFViewer({
container,
viewer,
linkService: this.pdfLinkService,
findController: this.pdfFindController
});
this.pdfLinkService.setViewer(this.pdfViewer);
this.pdfViewer.setDocument(pdf);
this.pdfLinkService.setDocument(pdf, null);
this.pdfViewer.onePageRendered.then(() => {
pdf.getOutline().then((outline) => {
this.outline = outline || null;
if (!outline) {
return;
}
this.setState({bookmarkItems: outline});
});
});
});
}
...
onNextPageClick = () => {
if(this.state.numPages > this.state.pageNumber) {
this.setState({pageNumber: this.state.pageNumber + 1});
this.setState({pageNumberInput: this.state.pageNumber + 1});
this.pdfViewer.currentPageNumber++;
}
}
onPreviousPageClick = () => {
if(this.state.pageNumber > 1) {
this.setState({pageNumber: this.state.pageNumber - 1});
this.setState({pageNumberInput: this.state.pageNumber - 1});
this.pdfViewer.currentPageNumber--;
}
}
...
render() {
return(
...
<div className="splitToolbarButton hiddenSmallView">
<button className="toolbarButton pageUp" title="Previous Page" id="previous" tabIndex="13" data-l10n-id="previous" onClick={this.onPreviousPageClick}>
<span data-l10n-id="previous_label">Previous</span>
</button>
<div className="splitToolbarButtonSeparator" />
<button className="toolbarButton pageDown" title="Next Page" id="next" tabIndex="14" data-l10n-id="next" onClick={this.onNextPageClick}>
<span data-l10n-id="next_label">Next</span>
</button>
</div>
...
<div id="viewerContainer" ref={this.viewerContainer}>
<div id="viewer" ref={this.viewer} className="pdfViewer" />
</div>
)
}
因此,使用所有这些代码,我都可以完整呈现pdf文档,但是在跳转到特定页面时遇到了问题。奇怪的是,仅当我使用new pdfjsViewer.PDFViewer
渲染整个文档时,我才能跳到页面,但是当我使用new pdfjsViewer.PDFSinglePageViewer
时,我只能正常渲染一页时,无法跳转到页面。跳到页面。那么有人知道我想念的东西吗,这让我头痛了好几个星期了?谢谢。
答案 0 :(得分:1)
我找到了我的问题所在。我不知道ID为div
的{{1}}元素必须具有viewerContainer
才能使position: absolute
实际执行某些操作。 scrollIntoView
元素div
也是如此。当然,这现在很有意义,但是我一直在寻找错误的地方,以为它必须与React或mainContainer
之类的服务有关。