这个新问题与这个issue有关 . 基本上我能够将具有图像和CSS样式的html文件转换为PDF . 但是，我只是注意到 Headers 标记（h1 - h6）无法正确呈现 . 我意识到在iText网页上有一个这样的例子，但代码与我目前的代码不兼容 . 有人可以帮我解决这个问题 . 谢谢 .
public class HtmlToPdfConverter {
public static final String HTML = "C:\\Users\\APPS\\Desktop\\helppages_COPY\\Help_SiteMap.htm";
public static final String DEST = "C:\\Users\\APPS\\Desktop\\output.pdf";
//public static final String HTML = "C:\\Users\\APPS\\Desktop\\helppages_COPY\\general\\Training1.htm";
//public static final String DEST = "C:\\Users\\APPS\\Desktop\\Training1.pdf";
public static final String IMG_PATH = "C:\\Users\\APPS\\Desktop\\helppages_COPY\\images\\";
public static final String RELATIVE_PATH = "C:\\Users\\APPS\\Desktop\\helppages_COPY\\images\\";
public static final String CSS_DIR = "C:\\Users\\APPS\\Desktop\\helppages_COPY\\css\\";
public void createPdf(String file) throws IOException, DocumentException {
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(file));
document.open();
// CSS
CSSResolver cssResolver = XMLWorkerHelper.getInstance().getDefaultCssResolver(false);
FileRetrieve fileRetrieve = new FileRetrieveImpl(CSS_DIR);
cssResolver.setFileRetrieve(fileRetrieve);
// HTML
HtmlPipelineContext htmlPipelineContext = new HtmlPipelineContext(null);
htmlPipelineContext.setTagFactory(Tags.getHtmlTagProcessorFactory());
htmlPipelineContext.setImageProvider(new AbstractImageProvider() {
@Override
public String getImageRootPath() {
return IMG_PATH;
}
});
htmlPipelineContext.setLinkProvider(new LinkProvider() {
@Override
public String getLinkRoot() {
return RELATIVE_PATH;
}
});
// Pipelines
ElementList elements = new ElementList();
ElementHandlerPipeline end = new ElementHandlerPipeline(elements, null);
//PdfWriterPipeline pdfWriterPipeline = new PdfWriterPipeline(document, pdfWriter);
//HtmlPipeline hhHtmlPipeline = new HtmlPipeline(htmlPipelineContext, pdfWriterPipeline);
HtmlPipeline hhHtmlPipeline = new HtmlPipeline(htmlPipelineContext, end);
CssResolverPipeline cssResolverPipeline = new CssResolverPipeline(cssResolver, hhHtmlPipeline);
// XML Worker
XMLWorker xmlWorker = new XMLWorker(cssResolverPipeline, true);
XMLParser xmlParser = new XMLParser(xmlWorker);
xmlParser.parse(new FileInputStream(HTML));
document.open();
for (Element e : elements) {
document.add(e);
}
document.add(Chunk.NEWLINE);
document.close();
System.out.println("**** Conversion Complete ****");
}
public static void main(String[] args) throws IOException, DocumentException {
new HtmlToPdfConverter().createPdf(DEST);
}
}
这是我的一个html页面的示例 . 请注意，这些页面只是静态html页面 . 它们与在用户桌面上运行的基于Java FX的帮助页面应用程序一起使用 . 它允许他们查看页面，然后如果他们选择将其打印为pdf . 页面由Tomcat服务器提供 . 页面使用外部CSS样式表和图像 . html文件是用HTML5编写的 . 除了 Headers 标记之外，html文件中的所有内容都在pdf文件中正确呈现 . 例如，在页面中我已经包含了“Tutorial”一词，但是你可以看到它不是 . 我已经在浏览器中包含了我的页面以及我的pdf的样子，因此您可以看到我的问题 . 我希望这个解释得很好 . 我不知道如何让这更清楚 .
HTML文件：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Alert Notification</title>
<link rel="stylesheet" type="text/css" href="../css/helppages.css" />
</head>
<body>
<div class="page-padding">
<table class="header">
<tr class="header-footer-tr">
<td class="header-td-left">
<a href="#LINKS">Topic References</a>
</td>
<td class="header-td-center">
<a id="TOP">Create Alert</a>
</td>
<td class="header-td-right">
<a href="../Help_SiteMap.htm">Topics Map</a>
</td>
</tr>
</table>
<p>The Create Alert function provides an Administrator a means to send a “System” Alert that immediately displays
a message window to all users who are currently logged on and to the rest when they do log on until a specified time.
A system Alert might be used to notify users of changes that effect system access or availability such as scheduled maintenance.
</p>
<p>This function is executed as an Admin menu option.</p>
<div class="image-padding center-content">
<!-- <img src="../images/Create_Alert.png" alt="Create Alert" /> -->
<img src="http://via.placeholder.com/300x100" alt="dummy image" />
</div>
<p>This window has two text fields, two selection lists, and two buttons.</p>
<ul>
<li>Subject - text input to accept a title of the message to all users</li>
<li>Expire time hour - selection list to specify the hour of the day until which users will see this message at login</li>
<li>Expire time minute - selection list to specify the minute of the hour until which users will see this message at login
</li>
<li>Multi-line text input field to accept message body</li>
<li>OK - button to accept and broadcast the Alert then close the window</li>
<li>Close - button to close the window discarding the message</li>
</ul>
<div class="thin-horizontal-line"></div>
<h2 id="TUTORIAL">Tutorial</h2>
<p>
<b>Send an Alert</b>
</p>
<ul>
<li>Enter an Alert title in the Subject text input field and information for the Alert body (both required fields)</li>
<li>Optionally, change the expiration time (must be at least 5 minutes in future, 10 is safer)</li>
<li>Click the OK button</li>
</ul>
<table class="footer">
<tr class="header-footer-tr">
<td style="width: 50%; text-align: center">
<a id="LINKS"></a>Local Topics</td>
<td style="width: 50%; text-align: center">Related Topics</td>
</tr>
<tr class="verticle-align-top">
<td class="local-topics-padding">
<p>
<a href="#TOP">Top of this Page</a>
</p>
<p>
<a href="#TUTORIAL">Tutorial</a>
</p>
</td>
<td class="text-align-right related-topics-padding">
<p>
<a href="../admin/Admin_Main.htm">Admin Functions</a>
</p>
</td>
</tr>
</table>
</div>
</body>
</html>
页面应该是什么样的：
这是我转换后的pdf的样子：
谢谢，我感谢到目前为止给予的所有帮助 .