前端和java后台将HTML转换成pdf

private final static String DEST = "C:\\80afa41a3bfc474cbf1ac8b5bc1d.pdf";	//生成pdf的路径
	private final static String SRC = "D:\\3b33a68bbf52417aac48687937352464.html";	//html文件路径
	public static final String FONT = "/font/NotoSansCJKsc-Regular.otf";	//本地字体路径（百度下载）

	public static void main(String[] args) {
		try {
			HtmlToPdf html = new HtmlToPdf();
			html.tomPdf(SRC, DEST);
		} catch (Exception e) {
			e.printStackTrace();
		}
    }

	/**
	 * HTML转换成pdf
	 * @param html html文件路径
	 * @param DEST 生成pdf的路径
	 * @throws Exception
	 */
	public static void tomPdf(String html, String DEST) throws Exception {
		ConverterProperties props = new ConverterProperties();
		DefaultFontProvider defaultFontProvider = new DefaultFontProvider(false, false, false);
		defaultFontProvider.addFont(FONT);
		props.setFontProvider(defaultFontProvider);
		PdfWriter writer = new PdfWriter(DEST);
		PdfDocument pdf = new PdfDocument(writer);
		pdf.setDefaultPageSize(new PageSize(595.0F, 842.0F));
		Document document = HtmlConverter.convertToDocument(new FileInputStream(html), pdf, props);
		document.close();
		pdf.close();
		
	}

<!--将html转换成pdf-->
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>html2pdf</artifactId>
            <version>2.0.2</version>
        </dependency>
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>font-asian</artifactId>
            <version>7.1.2</version>
        </dependency>
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>barcodes</artifactId>
            <version>7.1.2</version>
        </dependency>

前端方式：（不推荐）
理由：分辨率并不高，且默认不支持分页

<script src="http://code.jquery.com/jquery-1.4.1.min.js"></script>
<script src="https://cdn.bootcss.com/html2canvas/0.5.0-beta4/html2canvas.js"></script>
<script src="https://cdn.bootcss.com/jspdf/1.3.4/jspdf.debug.js"></script>

$(function () {
	  //唯一需要修改的地方，将需要转换的部分添加id属性export_content
	  var target = document.getElementById("export_content");
	  
	  target.style.background = "#FFFFFF";
	  html2canvas(target, {
		onrendered:function(canvas) {
			var contentWidth = canvas.width;
			var contentHeight = canvas.height;

			//一页pdf显示html页面生成的canvas高度;
			var pageHeight = contentWidth / 592.28 * 841.89;
			//未生成pdf的html页面高度
			var leftHeight = contentHeight;
			//页面偏移
			var position = 0;
			//a4纸的尺寸[595.28,841.89]，html页面生成的canvas在pdf中图片的宽高
			var imgWidth = 595.28;
			var imgHeight = 592.28/contentWidth * contentHeight;

			var pageData = canvas.toDataURL('image/jpeg', 1.0);

			var pdf = new jsPDF('', 'pt', 'a4');

			//有两个高度需要区分，一个是html页面的实际高度，和生成pdf的页面高度(841.89)
			//当内容未超过pdf一页显示的范围，无需分页
			if (leftHeight < pageHeight) {
			pdf.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight );
			} else {
				while(leftHeight > 0) {
					pdf.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
					leftHeight -= pageHeight;
					position -= 841.89;
					//避免添加空白页
					if(leftHeight > 0) {
					  pdf.addPage();
					}
				}
			}

			pdf.save("content.pdf");
		}
	  })
	})