前端和java後臺將HTML轉換成pdf

private final static String DEST = "C:\\80afa41a3bfc474cbf1ac8b5bc1d.pdf";	//生成pdf的路徑
	private final static String SRC = "D:\\3b33a68bbf52417aac48687937352464.html";	//html檔案路徑
	public static final String FONT = "/font/NotoSansCJKsc-Regular.otf";	//本地字型路徑（百度下載）
 


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

	/**
	 * HTML轉換成pdf
	 * @param html html檔案路徑
	 * @param DEST 生成pdf的路徑
	 * @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();
		
	}

<!--將html轉換成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：（不推薦）
理由：解析度並不高，且預設不支援分頁

<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，將需要轉換的部分新增id屬性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;

			//一頁pdf顯示html頁面生成的canvas高度;
			var pageHeight = contentWidth / 592.28 * 841.89;
			//未生成pdf的html頁面高度
			var leftHeight = contentHeight;
			//頁面偏移
			var position = 0;
			//a4紙的尺寸[595.28,841.89]，html頁面生成的canvas在pdf中圖片的寬高
			var imgWidth = 595.28;
			var imgHeight = 592.28/contentWidth * contentHeight;

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

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

			//有兩個高度需要區分，一個是html頁面的實際高度，和生成pdf的頁面高度(841.89)
			//當內容未超過pdf一頁顯示的範圍，無需分頁
			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;
					//避免新增空白頁
					if(leftHeight > 0) {
					  pdf.addPage();
					}
				}
			}

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