来自cfdocument中二进制文件的cfimage

Question

I am writing a PDF dynamically, and am creating a QR code on the document for eTicketing purposes 我正在动态编写PDF，并且正在为电子票务目的在文档上创建QR码

i set my cfdocument localurl=yes to include a different image, which works fine, but since I am using an API call to get the binary for the qrCode, the using cfimage to display the image, it is only showing a red X 我将cfdocument localurl = yes设置为包括其他图像，这很好用，但是由于我使用API调用获取qrCode的二进制文件，因此使用cfimage显示图像，它只显示红色的X

<cfdocument format="PDF"  overwrite="Yes" localUrl="yes" pageType = "letter">
<body>
<cfoutput>
<section id="header">

<img src="file:///#ExpandPath('images/header.png')#"/>
<cfimage action="writeToBrowser" source="#rc.qrCode#" />
</cfoutput>
</body>
</html>
</cfdocument>

the source variable rc.qrCode is a binary response that works perfectly until i place inside cfdocument, it generates a url like this http://mysite/CFFileServlet/_cf_image/_cfimg-7945382145198648283.PNG as image source 源变量rc.qrCode是一个二进制响应，在我将其放置到cfdocument中之前，它可以正常工作，它生成的URL像这样http://mysite/CFFileServlet/_cf_image/_cfimg-7945382145198648283.PNG作为图像源

i am sure this has todo with localurl and file:///, i just an not knowledgable enough to know why 我敢肯定这与localurl和file：///有关，我只是一个不太了解的原因

Answer 1

Do not need to use physical path rather use relative path to your page. 不需要使用物理路径，而是使用页面的相对路径。 eg If you code in index.cfm of root folder and image inside images folder 例如，如果您在根文件夹的index.cfm中以及在图像文件夹中的图像中进行编码

try <img src="images/header.png"> , Note that it should not start with root path rather relative to your file. 请尝试<img src =“ images / header.png”>，请注意，它不应以根路径开头，而应相对于您的文件。

UPDATE 更新

writetoBrowser internally write file to hard drive to it's temporary location (topically, C:\\ColdFusion10\\cfusion\\tmpCache\\CFFileServlet) and while rendering it to browser it use relative path like "/CFFileServlet/_cf_image/_cfimg1592404668342998556.PNG", you can say that ColdFusion internally map CFFileServlet directory with all coldfusion site but notice leading forward slash and this makes issue with localurl=true. writetoBrowser内部将文件写入硬盘驱动器到其临时位置（局部为C：\\ ColdFusion10 \\ cfusion \\ tmpCache \\ CFFileServlet），并在将其呈现到浏览器时使用“ /CFFileServlet/_cf_image/_cfimg1592404668342998556.PNG”之类的相对路径。 ColdFusion在内部将CFFileServlet目录与所有Coldfusion站点进行内部映射，但注意前导斜杠，这会导致localurl = true出现问题。 Since localurl=true either need physical path or relative path to your document. 由于localurl = true，因此需要物理路径或文档的相对路径。

Good idea is instead of writetobrowser you can write same image to harddrive at your location and give physical path in img tag. 好主意是，您可以将同一张图片写入您所在位置的硬盘驱动器中，并在img标签中提供物理路径，而不是writetobrowser。 I do not this there will any performance issue since ColdFusion internally doing same thing when you are using writetobrowser attribute :) 我不认为这会有任何性能问题，因为当您使用writetobrowser属性时，ColdFusion在内部做同样的事情:)

来自cfdocument中二进制文件的cfimage

问题描述

1 个解决方案

解决方案1
0 2013-06-29 03:24:28

来自cfdocument中二进制文件的cfimage

问题描述

1 个解决方案

解决方案1 0 2013-06-29 03:24:28

解决方案1
0 2013-06-29 03:24:28