JSP页面导出PDF格式文件

JSP页面导出PDF格式文件基本在前端页面可以全部完成

<script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/0.4.1/html2canvas.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.0.272/jspdf.debug.js"></script>

添加下载链接的点击事件

<script type="text/javascript">    var downPdf = document.getElementById("downLoad");    downPdf.onclick = function() {        downPdf.parentNode.removeChild(downPdf);        html2canvas(document.body, {            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;                //pdf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‘);            }        })    }</script>

<a id="downLoad" href="javascript:void(0)">打印档案</a>最终生成文件

原文地址：https://www.cnblogs.com/xiao1993/p/10259159.html