错误,现在flexSDK是免费的,开发工具Flex Builder 2 (Eclipse Based IDE) 为 $499,Flex Charting Components - $299,单CPU的Flex Data Services Express 免费,Flex Data Services Departmental (J2EE Server)为 $6K per CPU( limit 100 concurrent users. 100 concurrent is plenty for many apps) ,Flex Data Services Enterprise (J2EE Server) 为$20K per CPU(No limits, Lasers included)。
#4 - Flex 应用只能与特定的server交互数据
错误,Flex 应用程序swf文件可以和任何基于http/https或者socket的服务器通讯: - Exchange any format of ASCII text (POST,GET,REST Headers Supported) - Exchange any format of XML (POST,GET,REST Headers Supported) - Talk to any server side language (.NET, RUBY, PYTHON, JAVA, PHP, PERL, XML) - Exchange data using SOAP direct to the server (many soap encodings supported) - Exchange binary AMF (Optimized data serialization format for remoting, paging). This is supported in ColdFusion and JRun by default and there are many free AMF libraries for .NET, JAVA, Ruby, PHP - Exchange data in real-time using 2 way push over XMLSocket and BinarySocket. These features are unique to Flash Player
错误,学习flex最难的部分是理解组件开发模型和MXML语法,如果有PowerBuilder, VB, Delphi, Visual Studio, Java的开发经验,学习Flex开发,就是小菜一碟(like a duck to water)。
#8 - 很少有实际项目使用flex
错误,The first market for Flex is intranet applications ,所以能公开见到的看起来比较少,There are a few leading companies using Flex 2 for public facing applications,很少有公司开发的flex2应用是面向公众的。What is interesting is that the Pikeo photo service launched on Flex 2 last week.
错误,Flash Player 9 and ActionScript 3 的产生就是为了速度的大幅提升而设计的。Flash Player 9 包含一个JIT compiler ,速度超过上一个版本20倍以上。这个性能的获得要归功于播放器在运行时生成 PPC and X86 本地机器码 ,这不仅仅是更快,而是惊人的快了。