问题描述
有人有这样的例子吗？ Google今晚不是我的朋友。我有最新版本的FusionCharts。我试图弄清楚如何将图形另存为图像文件以通过电子邮件发送。
Does anyone have an example of this? Google is not my friend tonight. I have the newest version of FusionCharts. I'm trying to figure out how to save a graph as an image file to email it.
我知道如何保存图像，然后将图像插入HTML电子邮件中，在使用其他图形产品之前就已经做到了。我只是无法通过一个很好的例子来说明如何使用Fusioncharts。
I know how to save and then insert images into HTML emails, and I've done this before with other graph products. I just cannot fine 1 good example of how to do this with Fusioncharts.
谢谢！
推荐答案
在模板中使用以下代码，并将imageSaveURL属性指向该模板。
Use the following code in a template and point the imageSaveURL property at that template.
您的图表会提交所有必要的数据，以便重构图表。在我的示例中，我将其提供给浏览器，但您可以将其保存在本地，然后在必要时附加到 cfmail 。
Your chart submits all necessary data for the chart to be reconstructed. In my example I'm serving it to the browser but you could save it locally and then attach to a cfmail if necessary.
我很确定我最初是从Fusioncharts论坛上获得的。这已针对Fusioncharts 3.1更新。
I'm pretty sure I got this from the fusioncharts forums originally. This was updated for fusioncharts 3.1.
<cfif structKeyExists(Form, "width") >
<cfset width = int(Form.width) />
<cfelse>
<cfset width = int(Form.Meta_Width) />
</cfif>
<cfif structKeyExists(Form, "height") >
<cfset height = int(Form.height) />
<cfelse>
<cfset height = int(Form.Meta_Height) />
</cfif>
<cfif structKeyExists(Form, "data") >
<cfset Form.data = Form.data />
<cfelse>
<cfif structKeyExists(Form, "stream") >
<cfset Form.data = Form.stream />
</cfif>
</cfif>
<cfset user = viewState.getValue("user", structNew()) />
<!--- Impose some limits to mitigate DOS attacks --->
<cfif Not (0 lte width and width lte 5000)>
<cfthrow message="Width out of range." />
</cfif>
<cfif Not (0 lte height and height lte 5000)>
<cfthrow message="Height out of range." />
</cfif>
<!--- Check if we have the chart data --->
<cfif Not StructKeyExists(Form, "data") or Not Len(Trim( Form.data ))>
<cfthrow message="Image Data not supplied." />
</cfif>
<!--- Default background color is white --->
<cfif Not StructKeyExists(Form, "bgcolor") or Not Len(Trim( Form.bgcolor ))>
<cfset Form.bgcolor = "FFFFFF" />
</cfif>
<cfset gColor = CreateObject("java", "java.awt.Color") />
<cfset chart = CreateObject("java", "java.awt.image.BufferedImage") />
<cfset chart.init( JavaCast("int", width), JavaCast("int", height), chart.TYPE_3BYTE_BGR) />
<cfset gr = chart.createGraphics() />
<cfset gr.setColor( gColor.decode("##" & Form.bgcolor) ) />
<cfset gr.fillRect(0, 0, JavaCast("int", width), JavaCast("int", height)) />
<!--- Get rows with pixels --->
<cfset rows = ListToArray(Form.data, ";") />
<cfloop from="1" to="#ArrayLen(rows)#" index="i">
<cfset pixels = ListToArray(rows[i], ",") />
<!--- Horizontal index (x scale) --->
<cfset horizIndex = 0 />
<cfloop from="1" to="#ArrayLen(pixels)#" index="j">
<cfif ListLen(pixels[j], "_") eq 2>
<!--- We have the color and the number of times it must be repeated --->
<cfset color = ListGetAt(pixels[j], 1, "_") />
<cfset repeat = ListGetAt(pixels[j], 2, "_") />
<cfelse>
<!--- Background color; how many pixels to skip --->
<cfset color = "" />
<cfset repeat = ListGetAt(pixels[j], 1, "_") />
</cfif>
<cfif Len(Trim(color))>
<!--- If the hexadecimal code is less than 6 characters, prefix with 0 to get a 6 char color --->
<cfif Len(Trim(color)) lt 6>
<cfset color = RepeatString(0, 6 - Len(Trim(color))) & color />
</cfif>
<!--- Draw a horizontal line for the number of pixels we must repeat --->
<cfset gr.setColor(gColor.decode("##" & color)) />
<cfset gr.drawLine(JavaCast("int", horizIndex), JavaCast("int", i - 1), JavaCast("int", horizIndex + repeat -1), JavaCast("int", i - 1)) />
</cfif>
<cfset horizIndex = horizIndex + repeat />
</cfloop>
</cfloop>
<!--- Get writer for Jpeg --->
<cfset writer = "" />
<cfset iter = CreateObject("java", "javax.imageio.ImageIO").getImageWritersByFormatName("jpg") />
<cfloop condition="iter.hasNext()">
<cfset writer = iter.next() />
</cfloop>
<!--- Set Jpeg quality to maximum --->
<cfset jpgParams = CreateObject("java", "javax.imageio.plugins.jpeg.JPEGImageWriteParam").init( CreateObject("java", "java.util.Locale").init("en") ) />
<cfset jpgParams.setCompressionMode( jpgParams.MODE_EXPLICIT ) />
<cfset jpgParams.setCompressionQuality( 1 ) />
<!--- Write image to a memory stream --->
<cfset imageOutput = CreateObject("java", "java.io.ByteArrayOutputStream").init() />
<cfset writer.setOutput( CreateObject("java", "javax.imageio.stream.MemoryCacheImageOutputStream").init( imageOutput ) ) />
<cfset writer.write(JavaCast("null", 0), CreateObject("java", "javax.imageio.IIOImage").init(chart, JavaCast("null", 0), JavaCast("null", 0)), jpgParams) />
<!--- Stream the image to the browser (hint browser to display the Save dialog) --->
<cfset filename="whatever.jpg" />
<cfheader name="Content-Disposition" value="attachment; filename=""#filename#""">
<cfcontent type="image/jpeg" variable="#imageOutput.toByteArray()#">
这篇关于CF：将Fusioncharts图另存为图像以通过电子邮件发送的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！