jQuery-Word-Export 使用记录及完整修正文件下载 jquery.wordexport.js

参考资料： jQuery-Word-Export导出word_jquery.wordexport.js下载-CSDN博客

近期又需要自己做个 Html2Doc 的解决方案，因为客户又不想要 Html2pdf 的下载了，当初还给我费尽心思解决Html转pdf时中文输出的问题（html转pdf文件下载之最合理的方法支持中文_jspdf.umd.min.js-CSDN博客）以及手机端下载pdf的问题（手机端 Android WebView 获取 blob 链接文件名并下载网页动态生成的 pdf 文件且调用外部程序打开_blob链接怎么打开-CSDN博客）

查了下，基于 IIS 的解决方案，感觉还是参考资料中的相对靠谱，测试了一下，页面上的例子正确工作，输出文件正确，之后逐步添加不同元素测试也正常，但是到加了 img 时就报错了：

问 AI 说是叫检查 jquery.word.export.js 的第 33行：

$('<canvas>').attr("id", "test_word_img_" + i).width(w).height(h).insertAfter(img_id);

看了前后代码，发现是 img 元素没有 id 造成的，这样的话，就需要修复 jquery.word.export.js，以下是修复后的代码，不管 img 有没有 id 都能正确输出了，当然，是交给通义千问去修复的：

if (typeof jQuery !== "undefined" && typeof saveAs !== "undefined") {(function ($) {$.fn.wordExport = function (fileName) {fileName = typeof fileName !== 'undefined' ? fileName : "jQuery-Word-Export";var static = {mhtml: {top: "Mime-Version: 1.0\nContent-Base: " + location.href + "\nContent-Type: Multipart/related; boundary=\"NEXT.ITEM-BOUNDARY\";type=\"text/html\"\n\n--NEXT.ITEM-BOUNDARY\nContent-Type: text/html; charset=\"utf-8\"\nContent-Location: " + location.href + "\n\n<!DOCTYPE html>\n<html>\n_html_</html>",head: "<head>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\n<style>\n_styles_\n</style>\n</head>\n",body: "<body>_body_</body>"}};var options = {maxWidth: 624};// Clone selected element before manipulating it  var markup = $(this).clone();// Remove hidden elements from the output  markup.each(function () {var self = $(this);if (self.is(':hidden'))self.remove();});// Embed all images using Data URLs  var images = Array();var img = markup.find('img');for (var i = 0; i < img.length; i++) {// Calculate dimensions of output image  var w = Math.min(img[i].width, options.maxWidth);var h = img[i].height * (w / img[i].width);// Ensure each image has a unique idvar img_id = img[i].id || "dynamic_img_" + i;if (!img[i].id) {$(img[i]).attr("id", img_id);}$('<canvas>').attr("id", "test_word_img_" + i).width(w).height(h).insertAfter("#" + img_id);// Create canvas for converting image to data URL  var canvas = document.createElement("CANVAS");canvas.width = w;canvas.height = h;// Draw image to canvas  var context = canvas.getContext('2d');context.drawImage(img[i], 0, 0, w, h);// Get data URL encoding of image  var uri = canvas.toDataURL("image/png");// Save encoded image to array  images[i] = {type: uri.substring(uri.indexOf(":") + 1, uri.indexOf(";")),encoding: uri.substring(uri.indexOf(";") + 1, uri.indexOf(",")),location: "#" + img_id,data: uri.substring(uri.indexOf(",") + 1)};// Replace original image with canvas in markup$("#" + img_id).replaceWith(canvas);}// Prepare bottom of mhtml file with image data  var mhtmlBottom = "\n";for (var i = 0; i < images.length; i++) {mhtmlBottom += "--NEXT.ITEM-BOUNDARY\n";mhtmlBottom += "Content-Location: " + images[i].location + "\n";mhtmlBottom += "Content-Type: " + images[i].type + "\n";mhtmlBottom += "Content-Transfer-Encoding: " + images[i].encoding + "\n\n";mhtmlBottom += images[i].data + "\n\n";}mhtmlBottom += "--NEXT.ITEM-BOUNDARY--";//TODO: load css from included stylesheet  var styles = "";// Aggregate parts of the file together  var fileContent = static.mhtml.top.replace("_html_", static.mhtml.head.replace("_styles_", styles) + static.mhtml.body.replace("_body_", markup.html())) + mhtmlBottom;// Create a Blob with the file contents  var blob = new Blob([fileContent], {type: "application/msword;charset=utf-8"});saveAs(blob, fileName + ".doc");};})(jQuery);
} else {if (typeof jQuery === "undefined") {console.error("jQuery Word Export: missing dependency (jQuery)");}if (typeof saveAs === "undefined") {console.error("jQuery Word Export: missing dependency (FileSaver.js)");}
}

中间还遇到 img 标签中 src 使用其他网站的链接也会报错：

但是这是由于跨域问题，因此将图片放置到网站本地即可：

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Export to DOCX</title><script src="./js/jquery-3.3.1.min.js"></script><script src="./js/FileSaver.js"></script><script src="./js/jquery.wordexport.js"></script>
</head>
<body>
<div id="contentAA"><h1>这是一个标题</h1><h1> Your content here...</h1><p>这是段落内容。</p><img src="./img/01.png" alt="示例图片">	<table border="1"><tr><th>表头1</th><th>表头2</th></tr><tr><td>数据1</td><td>数据2</td></tr></table><img src="./img/02.png" alt="示例图片">	
</div>
<hr/>
<button id="export">导出</button><script>$("#export").click(function(){$("#contentAA").wordExport();});</script>
</body>
</html>

图片也正常导出了，打开导出的文件看了一下，发现是个加了壳的 Html 文件，仔细看了下格式，发现这是 Mhtml 格式的，也即 .MHT 单个网页文件格式：

Mime-Version: 1.0
Content-Base: http://127.0.0.1/html2doc02.html
Content-Type: Multipart/related; boundary="NEXT.ITEM-BOUNDARY";type="text/html"--NEXT.ITEM-BOUNDARY
Content-Type: text/html; charset="utf-8"
Content-Location: http://127.0.0.1/html2doc02.html<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style></style>
</head>
<body><h1>这是一个标题</h1><h1> Your content here...</h1><p>这是段落内容。</p><img src="./img/01.png" alt="示例图片" id="dynamic_img_0">	<table border="1"><tbody><tr><th>表头1</th><th>表头2</th></tr><tr><td>数据1</td><td>数据2</td></tr></tbody></table><img src="./img/02.png" alt="示例图片" id="dynamic_img_1">	
</body></html>
--NEXT.ITEM-BOUNDARY
Content-Location: #dynamic_img_0
Content-Type: image/png
Content-Transfer-Encoding: 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--NEXT.ITEM-BOUNDARY
Content-Location: #dynamic_img_1
Content-Type: image/png
Content-Transfer-Encoding: base64iVBORw0KGgoAAAANSUhEUgAAABMAAAALCAYAAACd1bY6AAAAAXNSR0IArs4c6QAAAHRJREFUOE9j/P///38GKgFGUgxT3uSLYu1dv80ofBTD0BXDVMI0geSxsWHqMAxDtw2XAcjiGIbBXIXPMGQ/ETQM3SCQZmyacFkM9yYxLkMOU2wWY40AZIUwl+GyDNnrGEkDW4yCDMcV08gxTlI6I5S2qWoYAMYcbeBk+Zz2AAAAAElFTkSuQmCC--NEXT.ITEM-BOUNDARY--

既然如此，那么就有很多方法可以输出这种格式的文件了。不一定非得用 jQuery-Word-Export 了，而且从代码看 jquery.wordexport.js ，还可以做很多优化和自定义，现在这个只能勉强算是验证，还不能投入实用。

刚刚测试了 <img src="data:image/png;base64, 格式的图片，发现无法输出后无法在 word 2003 中显示，是因为没有处理 Src 和图片资源区 Content-Location: #dynamic_img_0 这样的设置不对造成的，按照 MHTML 格式规范，手工修改了一下下载的文件，在 Word 2003 里面就能正确显示图片了：

Mime-Version: 1.0
Content-Type: Multipart/related; boundary="NEXT.ITEM-BOUNDARY";type="text/html"--NEXT.ITEM-BOUNDARY
Content-Type: text/html; charset="utf-8"<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style></style>
</head>
<body><h1>这是一个标题</h1><p>这是段落内容。</p><img src="02.png" alt="示例图片">	<table border="1"><tbody><tr><th>表头1</th><th>表头2</th></tr><tr><td>数据1</td><td>数据2</td></tr></tbody></table><img src="01.png" alt="示例图片">	
</body></html>
--NEXT.ITEM-BOUNDARY
Content-Type: image/png
Content-Transfer-Encoding: base64
Content-Location: 01.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--NEXT.ITEM-BOUNDARY
Content-Type: image/png
Content-Transfer-Encoding: base64
Content-Location: 02.pngiVBORw0KGgoAAAANSUhEUgAAABMAAAALCAYAAACd1bY6AAAAAXNSR0IArs4c6QAAAHRJREFUOE9j/P///38GKgFGUgxT3uSLYu1dv80ofBTD0BXDVMI0geSxsWHqMAxDtw2XAcjiGIbBXIXPMGQ/ETQM3SCQZmyacFkM9yYxLkMOU2wWY40AZIUwl+GyDNnrGEkDW4yCDMcV08gxTlI6I5S2qWoYAMYcbeBk+Zz2AAAAAElFTkSuQmCC--NEXT.ITEM-BOUNDARY--

下一步就是继续修正 jquery.word.export.js 让它能正确按照这个格式输出文件，并且正确处理 <img 的 Src 属性。

下面补充一下 FileSaver.js ，省得还要去 github下载，好麻烦：

/* FileSaver.js * A saveAs() FileSaver implementation. * 1.3.2 * 2016-06-16 18:25:19 * * By Eli Grey, http://eligrey.com * License: MIT *   See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md */  /*global self */  
/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */  /*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */  var saveAs = saveAs || (function(view) {  "use strict";  // IE <10 is explicitly unsupported  if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {  return;  }  var  doc = view.document  // only get URL when necessary in case Blob.js hasn't overridden it yet  , get_URL = function() {  return view.URL || view.webkitURL || view;  }  , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")  , can_use_save_link = "download" in save_link  , click = function(node) {  var event = new MouseEvent("click");  node.dispatchEvent(event);  }  , is_safari = /constructor/i.test(view.HTMLElement)  , is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)  , throw_outside = function(ex) {  (view.setImmediate || view.setTimeout)(function() {  throw ex;  }, 0);  }  , force_saveable_type = "application/octet-stream"  // the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to  , arbitrary_revoke_timeout = 1000 * 40 // in ms  , revoke = function(file) {  var revoker = function() {  if (typeof file === "string") { // file is an object URL  get_URL().revokeObjectURL(file);  } else { // file is a File  file.remove();  }  };  setTimeout(revoker, arbitrary_revoke_timeout);  }  , dispatch = function(filesaver, event_types, event) {  event_types = [].concat(event_types);  var i = event_types.length;  while (i--) {  var listener = filesaver["on" + event_types[i]];  if (typeof listener === "function") {  try {  listener.call(filesaver, event || filesaver);  } catch (ex) {  throw_outside(ex);  }  }  }  }  , auto_bom = function(blob) {  // prepend BOM for UTF-8 XML and text/* types (including HTML)  // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF  if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {  return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});  }  return blob;  }  , FileSaver = function(blob, name, no_auto_bom) {  if (!no_auto_bom) {  blob = auto_bom(blob);  }  // First try a.download, then web filesystem, then object URLs  var  filesaver = this  , type = blob.type  , force = type === force_saveable_type  , object_url  , dispatch_all = function() {  dispatch(filesaver, "writestart progress write writeend".split(" "));  }  // on any filesys errors revert to saving with object URLs  , fs_error = function() {  if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {  // Safari doesn't allow downloading of blob urls  var reader = new FileReader();  reader.onloadend = function() {  var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');  var popup = view.open(url, '_blank');  if(!popup) view.location.href = url;  url=undefined; // release reference before dispatching  filesaver.readyState = filesaver.DONE;  dispatch_all();  };  reader.readAsDataURL(blob);  filesaver.readyState = filesaver.INIT;  return;  }  // don't create more object URLs than needed  if (!object_url) {  object_url = get_URL().createObjectURL(blob);  }  if (force) {  view.location.href = object_url;  } else {  var opened = view.open(object_url, "_blank");  if (!opened) {  // Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html  view.location.href = object_url;  }  }  filesaver.readyState = filesaver.DONE;  dispatch_all();  revoke(object_url);  }  ;  filesaver.readyState = filesaver.INIT;  if (can_use_save_link) {  object_url = get_URL().createObjectURL(blob);  setTimeout(function() {  save_link.href = object_url;  save_link.download = name;  click(save_link);  dispatch_all();  revoke(object_url);  filesaver.readyState = filesaver.DONE;  });  return;  }  fs_error();  }  , FS_proto = FileSaver.prototype  , saveAs = function(blob, name, no_auto_bom) {  return new FileSaver(blob, name || blob.name || "download", no_auto_bom);  }  ;  // IE 10+ (native saveAs)  if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {  return function(blob, name, no_auto_bom) {  name = name || blob.name || "download";  if (!no_auto_bom) {  blob = auto_bom(blob);  }  return navigator.msSaveOrOpenBlob(blob, name);  };  }  FS_proto.abort = function(){};  FS_proto.readyState = FS_proto.INIT = 0;  FS_proto.WRITING = 1;  FS_proto.DONE = 2;  FS_proto.error =  FS_proto.onwritestart =  FS_proto.onprogress =  FS_proto.onwrite =  FS_proto.onabort =  FS_proto.onerror =  FS_proto.onwriteend =  null;  return saveAs;  
}(  typeof self !== "undefined" && self  || typeof window !== "undefined" && window  || this.content  
));  
// `self` is undefined in Firefox for Android content script context  
// while `this` is nsIContentFrameMessageManager  
// with an attribute `content` that corresponds to the window  if (typeof module !== "undefined" && module.exports) {  module.exports.saveAs = saveAs;  
} else if ((typeof define !== "undefined" && define !== null) && (define.amd !== null)) {  define([], function() {  return saveAs;  });  
}

jQuery-Word-Export 使用记录及完整修正文件下载 jquery.wordexport.js

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