将远程url页面转换到本地的pdf文件
maven引入包：
<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-pdf</artifactId>
<version>9.1.6</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.7</version>
</dependency>
图片先转换成base64编码： 直接写到img的src中标签要封闭，<img src="data:image..." />
html页面头部：
<html xmlns="http://www.w3.org/1999/html" xmlns="http://www.w3.org/1999/html" xmlns="http://www.w3.org/1999/html"
xmlns="http://www.w3.org/1999/html">
public boolean convertHtmlToPdf(String url, String outputFile)
throws Exception {
OutputStream os = new FileOutputStream(outputFile);
ITextRenderer renderer = new ITextRenderer();
InputStream inputStream = new ByteArrayInputStream(Jsoup.connect(url).get().html().getBytes());
String urlStr = IOUtils.toString(inputStream);
renderer.setDocumentFromString(urlStr);
// // 解决中文支持问题
ITextFontResolver fontResolver = renderer.getFontResolver();
fontResolver.addFont(SystemConstant.local_dir + "/simsun.ttc", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
//解决图片的相对路径问题，绝对路径不需要写
// renderer.getSharedContext().setBaseURL("file:/D:/");
renderer.layout();
renderer.createPDF(os);
os.flush();
os.close();
return true;
}