Flex +javascript +Activex FLex 通过Javascript 调用ActiveX 操作硬件问题
我现在遇到这样的问题，公司做一套miss产品也就是我们的收银，仓储管理之类的软件这个时候会和很多的硬件打交道，例如pos收银机，打票机，钱箱，扫描器等等。我们界面准备用flex来做，后台用java(Spring+hibernate)+Blazeds,现在就是遇到了flex和硬件打交道的问题。因为厂商提供的接口都是dll所以我是通过Activex封装厂商提供的Dll，然后javascript去调用ActiveX，然后flex调用javascript.但是在页面引用<objectid="test"codeBase="test.CAB#1,0,0,1"classid="CLSID:E1BAF4EF-D3AA-4526-9A75-3E52CCDE1D2A"></object>
,这个对象的时候，flex找不到任何信息.也不报错,这个activeX我用html代码测试是没有问题的。能正确得到dll返回的值。把代码写在flex的页面就不行了、下面我贴出我的代码
首先在flex里面，我在index.template.html里面加入的代码：
<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!--savedfromurl=(0014)about:internet-->
<htmlxmlns="http://www.w3.org/1999/xhtml"lang="en"xml:lang="en">
<!--
SmartdevelopersalwaysViewSource.
ThisapplicationwasbuiltusingAdobeFlex,anopensourceframework
forbuildingrichInternetapplicationsthatgetdeliveredviathe
FlashPlayerortodesktopsviaAdobeAIR.
LearnmoreaboutFlexathttp://flex.org
//-->
<head>
<title>${title}</title>
<metaname="google"value="notranslate"/>
<metahttp-equiv="Content-Type"content="text/html;charset=utf-8"/>
<!--IncludeCSStoeliminateanydefaultmargins/paddingandsettheheightofthehtmlelementand
thebodyelementto100%,becauseFirefox,oranyGeckobasedbrowser,interpretspercentageas
thepercentageoftheheightofitsparentcontainer,whichhastobesetexplicitly.Fixfor
Firefox3.6focusborderissues.Initially,don'tdisplayflashContentdivsoitwon'tshow
ifJavaScriptdisabled.
-->
<styletype="text/css"media="screen">
html,body{height:100%;}
body{margin:0;padding:0;overflow:auto;text-align:center;
background-color:${bgcolor};}
object:focus{outline:none;}
#flashContent{display:none;}
</style>
<!--EnableBrowserHistorybyreplacinguseBrowserHistorytokenswithtwohyphens-->
<!--BEGINBrowserHistoryrequiredsection${useBrowserHistory}>
<linkrel="stylesheet"type="text/css"href="history/history.css"/>
<scripttype="text/javascript"src="history/history.js"></script>
<!${useBrowserHistory}ENDBrowserHistoryrequiredsection-->
<scripttype="text/javascript"src="swfobject.js"></script>
<scripttype="text/javascript">
//Forversiondetection,settomin.requiredFlashPlayerversion,or0(or0.0.0),fornoversiondetection.
varswfVersionStr="${version_major}.${version_minor}.${version_revision}";
//Touseexpressinstall,settoplayerProductInstall.swf,otherwisetheemptystring.
varxiSwfUrlStr="${expressInstallSwf}";
varflashvars={};
varparams={};
params.quality="high";
params.bgcolor="${bgcolor}";
params.allowscriptaccess="sameDomain";
params.allowfullscreen="true";
varattributes={};
attributes.id="${application}";
attributes.name="${application}";
attributes.align="middle";
swfobject.embedSWF(
"${swf}.swf",
"flashContent",
"${width}",
"${height}",
swfVersionStr,
xiSwfUrlStr,
flashvars,
params,
attributes
);
//JavaScriptenabledsodisplaytheflashContentdivincaseitisnotreplacedwithaswfobject.
swfobject.createCSS("#flashContent","display:block;text-align:left;");
</script>
<script>
functionsayHello(){
alert("你好伙计！");
}
</script>
<scriptlanguage="javascript">
functiontestdll()
{
//alert("bbb");
//varbtn=document.getElementById("btn").value;
//alert(btn);
//vardid=document.getElementById("test").value;
//alert(did);
//这里导入了我的Activex打包的cab文件叫test.CAB里面的Dll有个叫GetContent的方法，有两个参数，是int类型的，返回的是这两个参之和；我在html代码里面测试了是没问题的。能正确返回值2；
varsun=test.GetContent(1,1);
alert(sun);
}
</script>
</head>
<body>
<objectid="test"codeBase="test.CAB#1,0,0,1"classid="CLSID:E1BAF4EF-D3AA-4526-9A75-3E52CCDE1D2A"></object>
<!--SWFObject'sdynamicembedmethodreplacesthisalternativeHTMLcontentwithFlashcontentwhenenough
JavaScriptandFlashplug-insupportisavailable.Thedivisinitiallyhiddensothatitdoesn'tshow
whenJavaScriptisdisabled.
-->
<!---->
<inputid="btn"value="点击我"type="button"style="display:none"/>
<divid="flashContent">
<p>
ToviewthispageensurethatAdobeFlashPlayerversion
${version_major}.${version_minor}.${version_revision}orgreaterisinstalled.
</p>
<scripttype="text/javascript">
varpageHost=((document.location.protocol=="https:")?"https://":"http://");
document.write("<ahref='http://www.adobe.com/go/getflashplayer'><imgsrc='"
+pageHost+"www.adobe.com/images/shared/download_buttons/get_flash_player.gif'alt='GetAdobeFlashplayer'/></a>");
</script>
</div>
<noscript>
<objectclassid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"width="${width}"height="${height}"id="${application}"><paramname="movie"value="${swf}.swf"/>
<paramname="quality"value="high"/>
<paramname="bgcolor"value="${bgcolor}"/>
<paramname="allowScriptAccess"value="sameDomain"/>
<paramname="allowFullScreen"value="true"/>
<!--[if!IE]>-->
<objecttype="application/x-shockwave-flash"data="${swf}.swf"width="${width}"height="${height}">
<paramname="quality"value="high"/>
<paramname="bgcolor"value="${bgcolor}"/>
<paramname="allowScriptAccess"value="sameDomain"/>
<paramname="allowFullScreen"value="true"/>
<!--<![endif]-->
<!--[ifgteIE6]>-->
<p>
EitherscriptsandactivecontentarenotpermittedtorunorAdobeFlashPlayerversion
${version_major}.${version_minor}.${version_revision}orgreaterisnotinstalled.
</p>
<!--<![endif]-->
<ahref="http://www.adobe.com/go/getflashplayer">
<imgsrc="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif"alt="GetAdobeFlashPlayer"/>
</a>
<!--[if!IE]>-->
</object>
<!--<![endif]-->
</object>
</noscript>
</body>
</html>
这里是我的flex的MXML代码：
<?xmlversion="1.0"encoding="utf-8"?>
<s:Applicationxmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"minwidth="955"minheight="600">
<fx:Declarations>
<!--将非可视元素（例如服务、值对象）放在此处-->
</fx:Declarations>
<fx:Script>
<![CDATA[
publicfunctioncallJs():void{
ExternalInterface.call("sayHello");
}
publicfunctioncallJs1():void{
//这里的testdll是index.template.html页面加入的js函数
ExternalInterface.call("testdll");
}]]>
</fx:Script>
<s:Buttonid="btn"x="12"y="10"label="FLex调用js"click="callJs()">
</s:Button>
<s:Buttonid="btn1"x="10"y="77"label="FLex调用jsanddll"click="callJs1()"/>
</s:Application>