我尝试了Denis的答案，遇到了一些问题(在使用横向页面后，纵向页面无法正常打印)，所以这里是我的解决方案:

body { margin: 0; background: #CCCCCC; } div.page { margin: 10px auto; border: solid 1px black; display: block; page-break-after: always; width: 209mm; height: 296mm; overflow: hidden; background: white; } div.landscape-parent { width: 296mm; height: 209mm; } div.landscape { width: 296mm; height: 209mm; } div.content { padding: 10mm; } body, div, td { font-size: 13px; font-family: Verdana; } @media print { body { background: none; } div.page { width: 209mm; height: 296mm; } div.landscape { transform: rotate(270deg) translate(-296mm, 0); transform-origin: 0 0; } div.portrait, div.landscape, div.page { margin: 0; padding: 0; border: none; background: none; } } <div class="page"> <div class="content"> First page in Portrait mode </div> </div> <div class="page landscape-parent"> <div class="landscape"> <div class="content"> Second page in Landscape mode (correctly shows horizontally in browser and prints rotated in printer) </div> </div> </div> <div class="page"> <div class="content"> Third page in Portrait mode </div> </div>

我面临的问题可能和你一样。这里的每个人都使用CSS来静态地提供它，但我不得不寻找一个动态的解决方案，这样它就会根据活动元素而改变，而无需重新加载页面。

我创建了两个文件，肖像。css和风景。css。

Portrait.css是空的，但是landscape.css只有一行。

@media print{@page {size: landscape}}

在我的主文件中，我添加了这一行html来指定portrait.css为默认值。

 <link rel="stylesheet" id="PRINTLAYOUT" href="portrait.css" type="text/css" /></link>

现在，要切换，你只需要改变元素中的href来切换打印模式。

$("#PRINTLAYOUT").attr("href","landscape.css")
  // OR 
document.getElementById("PRINTLAYOUT").href = "landscape.css" // I think...

这对我来说很有效，我希望它能帮助其他人像我一样做艰难的事情。注意，$表示JQuery..如果你还没有使用它，我强烈建议你现在就开始使用。

如前所述，size属性是您所需要的。要在打印时设置页面的方向和大小，您可以使用以下命令:

/* ISO Paper Size */
@page {
  size: A4 landscape;
}

/* Size in mm */    
@page {
  size: 100mm 200mm landscape;
}

/* Size in inches */    
@page {
  size: 4in 6in landscape;
}

下面是@page文档的链接。

<style type="text/css" media="print">
.landscape { 
    width: 100%; 
    height: 100%; 
    margin: 0% 0% 0% 0%; filter: progid:DXImageTransform.Microsoft.BasicImage(Rotation=1); 
} 
</style>

如果你想把这个样式应用到一个表格上，那么就用这个样式类创建一个div标签，并在这个div标签中添加table标签，最后关闭div标签。

此表格将仅以横向模式打印，所有其他页面将仅以纵向模式打印。但问题是，如果表的大小大于页面宽度，那么我们可能会丢失一些行，有时也会丢失标题。小心些而已。

祝你有愉快的一天。

谢谢你,亲爱的 Naveen Mettapally。

引用自css - discussion Wiki

The @page rule has been cut down in scope from CSS2 to CSS2.1. The full CSS2 @page rule was reportedly implemented only in Opera (and buggily even then). My own testing shows that IE and Firefox don't support @page at all. According to the now-obsolescent CSS2 spec section 13.2.2 it is possible to override the user's setting of orientation and (for example) force printing in Landscape but the relevant "size" property has been dropped from CSS2.1, consistent with the fact that no current browser supports it. It has been reinstated in the CSS3 Paged Media module but note that this is only a Working Draft (as at July 2009). Conclusion: forget about @page for the present. If you feel your document needs to be printed in Landscape orientation, ask yourself if you can instead make your design more fluid. If you really can't (perhaps because the document contains data tables with many columns, for example), you will need to advise the user to set the orientation to Landscape and perhaps outline how to do it in the most common browsers. Of course, some browsers have a print fit-to-width (shrink-to-fit) feature (e.g. Opera, Firefox, IE7) but it's inadvisable to rely on users having this facility or having it switched on.

如果你正在使用React和MUI这样的库，在React应用中使用纯CSS并不是一个好的做法。更好的方法是使用一个名为GlobalStyles的样式组件，我们可以从Material UI导入它。 代码是这样的，

import { GlobalStyles } from '@mui/material';
const printStyle = {
  ['@media print']: {
    ['@page']: {
      size: 'landscape',
      margin: '2px',
     },
   },
 };

您可能不需要在@media打印中使用@page，因为@page仅用于打印。文档

页边距将消除浏览器在打印时生成的url。

我们可以在App容器中使用GlobalStyles。像这样

const App: React.FC = () => (
  <>
     <GlobalStyles styles={printStyle} />
     <AppView />
  </>
 );

当我们调用windows.print()时，它将应用上述CSS。 如果你在使用MUI之外的其他库，应该有一些组件或插件可以用于全局应用CSS。