使用ColdFusion从HTML生成图像 [英] Generating an image from HTML with ColdFusion
问题描述
我有一个ColdFusion页面，其中有一个样式化的HTML表。我想要做的是设置一个功能，允许我们的客户将表格保存为图像文件，供他们的幻灯片放映使用。我已经阅读了cfcontent的一些文档，但是，我开始得到的感觉，我会需要一个第三方库。我希望有人能够阐明这一点。
您可以将html表格转换成静态网页，然后呼叫包含topdf和wkhtmltoimage
I have a ColdFusion page with a styled HTML table in it. What I would like to be able to do is set up a feature that allows our customers to save the table as an image file, for use in their slide shows. I have read some of the documentation for cfcontent however, I am beginning to get the feeling that I will need a third party library. I was hoping someone could shed some light on this.
You could render your html table to a static page, then call http://code.google.com/p/wkhtmltopdf/ using cfexecute to render to pdf, or wkhtmltoimage can convert to .png .gif etc
Here's a static page with a test table and some css table.cfm
<html>
<head>
<title>Table test</title>
</head>
<style>
*{
margin:0;
padding:0;
}
body{
font-family: Georgia, serif;
font-size: 20px;
font-style: italic;
font-weight: normal;
letter-spacing: normal;
}
#content{
padding:40px;
margin:0 auto;
-moz-box-shadow:0px 0px 16px #aaa;
}
/* Table 1 Style */
table.table1{
font-family: "Trebuchet MS", sans-serif;
font-size: 16px;
font-weight: bold;
line-height: 1.4em;
font-style: normal;
border-collapse:separate;
}
.table1 thead th{
padding:15px;
color:#fff;
text-shadow:1px 1px 1px #568F23;
border:1px solid #93CE37;
border-bottom:3px solid #9ED929;
background-color:#9DD929;
background:-webkit-gradient(
linear,
left bottom,
left top,
color-stop(0.02, rgb(123,192,67)),
color-stop(0.51, rgb(139,198,66)),
color-stop(0.87, rgb(158,217,41))
);
background: -moz-linear-gradient(
center bottom,
rgb(123,192,67) 2%,
rgb(139,198,66) 51%,
rgb(158,217,41) 87%
);
-webkit-border-top-left-radius:5px;
-webkit-border-top-right-radius:5px;
-moz-border-radius:5px 5px 0px 0px;
border-top-left-radius:5px;
border-top-right-radius:5px;
}
.table1 thead th:empty{
background:transparent;
border:none;
}
.table1 tbody th{
color:#fff;
text-shadow:1px 1px 1px #568F23;
background-color:#9DD929;
border:1px solid #93CE37;
border-right:3px solid #9ED929;
padding:0px 10px;
background:-webkit-gradient(
linear,
left bottom,
right top,
color-stop(0.02, rgb(158,217,41)),
color-stop(0.51, rgb(139,198,66)),
color-stop(0.87, rgb(123,192,67))
);
background: -moz-linear-gradient(
left bottom,
rgb(158,217,41) 2%,
rgb(139,198,66) 51%,
rgb(123,192,67) 87%
);
-moz-border-radius:5px 0px 0px 5px;
-webkit-border-top-left-radius:5px;
-webkit-border-bottom-left-radius:5px;
border-top-left-radius:5px;
border-bottom-left-radius:5px;
}
.table1 tfoot td{
color: #9CD009;
font-size:32px;
text-align:center;
padding:10px 0px;
text-shadow:1px 1px 1px #444;
}
.table1 tfoot th{
color:#666;
}
.table1 tbody td{
padding:10px;
text-align:center;
background-color:#DEF3CA;
border: 2px solid #E7EFE0;
-moz-border-radius:2px;
-webkit-border-radius:2px;
border-radius:2px;
color:#666;
text-shadow:1px 1px 1px #fff;
}
</style>
<body>
<div id="content">
<table class="table1">
<thead>
<tr>
<th>column 1</th>
<th>column 2</th>
<th>column 3</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>oranges</td>
<td>lemons</td>
<td>apples</td>
</tr>
</tbody>
<tfoot>
<tr>
<td>red</td>
<td>blue</td>
<td>green</td>
</tr>
</tfoot>
</table>
</div>
</body>
</html>
Make a simple batch file wkhtmltoimage.bat
f:\temp\wkhtmltoimage --crop-h 250 --crop-w 200 http://localhost:8500/table.cfm f:\temp\outputfile.png
More command line options here
Use cfexecute to run the batch file
<cfexecute name="F:\temp\wkhtmltoimage.bat" timeout="20" variable="result">
</cfexecute>
Output is pretty nice
The windows installer libwkhtmltox-0.10.0_rc2.zip contains topdf and wkhtmltoimage
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