使用html-pdf节点模块在标头中添加图像

Question

我使用这个转换的HTML到PDF.The转换是真的好.不过问题是添加页眉和页脚的PDF pages.In的选项,如果我添加标题文本我得到的结果是什么我的预期.

//Options

    var options = {
    "header": {
        "height": "45mm",
        "contents": "<div style='text-align: center;'>Author: Marc Bachmann</div>" // If i add image in content it wont work
    // sample i tried 
      },
      "footer": {
        "height": "28mm",
        "contents": "<span style='color: #444;'>{{page}}</span>/<span>{{pages}}</span>"
      }
    }
// Tried this in contents <img src="image path" />
    var result = <div class="container"> HTML CONTENT</div>';

        pdf.create(result, options).toFile(fileName + ".pdf", function(err, res) {
        if (err) {
        console.error(err);
        callback();
        }

然后,如果我在标题(内容)选项中添加图像标记,我没有在生成的PDF中获取图像.能否请你帮我解决这个问题.

Answer 1

可以在选项标题中添加图像.1.使用"display:none"样式在html正文中加载图像.2.然后在选项标题中添加图像通过执行此操作,图像被缓存并可以将图像附加到标题中.

    var options = {
    "format": 'Letter',
    "orientation": "portrait",
    "header": {
    "contents": "<img src='image path' />",
        "height": "30mm"
  },
  "footer": {
    "contents": footer
  }
}
pdf.create("<div style='display:none'><img src='image path' /></div>", options).toFile("sample.pdf", function(err, res) {
        if (err) {
                console.error(err);
                callback();
        } 
});

Answer 2

在github上引用此问题，您不能将图像直接放入options.header，而必须将其放入体内的主体中<div id="pageHeader"></div>：

var pdf = require('html-pdf');
var path = require('path');

// this is very important, you have to put file:// before your path
// and normalize the resulting path
var imgSrc = 'file://' + __dirname + '/350x120.png';
imgSrc = path.normalize(imgSrc);
// or var imgSrc = path.join('file://', __dirname, '/350x120.png');

// Options
var options = {
    "header": {
      "height": "45mm",
      "contents": ""
    },
    "footer": {
      "height": "28mm",
      "contents": "<span style='color: #444;'>{{page}}</span>/<span>{{pages}}</span>"
    }
  }
// put your entire header here and the content of the page outside the <div id="pageHeader"></div>
var result = "<div id='pageHeader'><img src='" + imgSrc + "' /><div style='text-align: center;'>Author: Marc Bachmann</div></div>";
result += "<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit.</p>";
var fileName = __dirname + '/test.pdf';
pdf.create(result, options).toFile(fileName, function(err, res) {
  if (err) {
    console.error(err);
  }
});

有了这段代码，我得到了这个pdf：