Flex 加载pdf

如果想要在flex加载pdf，虽然pdf格式是开源的，但是自己去解析太麻烦了，pdf还要分页之类的，现在网上各种文档上传可以在线看很多都是pdf，当然也有word，excel之类，其实很多都是转了swf，flex加载swf，这次只说加载pdf，首先先下载一个swftools，这个工具有命令行可以转pdf 到dwg 简单命令是 pdf2swf -o 1.swf -s flashversion=9 1.pdf，其中flashversion最好选9以上 ，低版本有时候导出swf flex加载不出来。github上有flexpaper这个组件，flexpaper这个组件就不不细说了，还要结合flex-iframe.swc这个组件来用，flexpapaer和flex-iframe.swc地址http://files.cnblogs.com/files/haibalai/FlexPaper.rar。

这里做成一个组件，熟悉flexview开发的都知道widget模式，这里xml格式

 <?xml version="1.0" encoding="utf-8" ?>
 <data>
   <pdf name="aaa" url="http://locahost/FlexPaper/index.html?fileSrc=aaa.pdf"></pdf>
   <pdf name="bbb" url="http://locahost/FlexPaper/index.html?fileSrc=bbb.pdf"></pdf>
 </data>

组件：

 <?xml version="1.0" encoding="utf-8"?>
 <viewer:BaseWidget xmlns:esri="http://www.esri.com/2008/ags"
                    xmlns:fx="http://ns.adobe.com/mxml/2009"
                    xmlns:s="library://ns.adobe.com/flex/spark"
                    xmlns:mx="library://ns.adobe.com/flex/mx"
                    xmlns:viewer="com.esri.viewer.*"
                    xmlns:components="com.esri.viewer.components.*"
                    x="600" y="300"
                    xmlns:code="http://code.google.com/p/flex-iframe/"
                    widgetConfigLoaded="basewidget_widgetConfigLoaded()">

     <fx:Script>
         <![CDATA[
                 import com.esri.ags.layers.ArcGISDynamicMapServiceLayer;
                 import com.esri.viewer.managers.EventBus;
                 import com.szpl.extension.base.impl.AccessPoint;
                 import com.szpl.extension.tools.config.ILayerConfig;
                 import com.szpl.extension.tools.layer.ILayer;
                 import com.szpl.extension.tools.layer.LayerVisibleChangeEvent;
                 import flash.events.MouseEvent;
                 import flash.utils.ByteArray;
                 import mx.collections.ArrayCollection;
                 import mx.core.FlexGlobals;
                 import mx.rpc.events.FaultEvent;
                 import mx.rpc.events.ResultEvent;
                 import mx.utils.UIDUtil;
                 import spark.events.IndexChangeEvent;

         var arr:ArrayCollection = new ArrayCollection();
         protected  function basewidget_widgetConfigLoaded():void
         {
             if (configXML)
             {

                 var pdfxmls:XMLList = configXML.pdf;
                 for each(var pdfxml:XML in pdfxmls)
                 {
                     var obj:Object = new Object();
                     obj.name = String(pdfxml.@name);
                     obj.url = String(pdfxml.@url);
                     arr.addItem(obj);
                 }
                 list.dataProvider = arr;
             }
             if (arr.length > 0)
             {
                 list.selectedIndex = 0;
                 OfficeProject.source = (list.selectedItem as Object).url;
             }
         }

     private function listChangeHandle(event:IndexChangeEvent):void
     {
         OfficeProject.source = (list.selectedItem as Object).url;
     }

          ]]>
 </fx:Script>

 <viewer:WidgetTemplate id="LocateWT" width="980" height="100%"
            enableMinimizeButton="false" >

 <s:HGroup height="100%" width = "100%">
 <s:List id="list" height="100%" width="150"  change="listChangeHandle(event)" labelField="name">

 </s:List>

 <code:IFrame  id="OfficeProject" width="790" height="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off"/>    

 </s:HGroup>
 </viewer:WidgetTemplate>

 </viewer:BaseWidget>