要求
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必备知识
本文要求基本了解 Adobe Flex编程知识和JAVA基础知识。
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开发环境
MyEclipse10/Flash Builder4.6/Flash Player11及以上
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演示地址
传统网络程序的开发是基于页面的、服务器端数据传递的模式，把网络程序的表现层建立于HTML页面之上，而HTML是适合于文本的，传统的基于页面的系统已经渐渐不能满足网络浏览者的更高的、全方位的体验要求了。而富互联网应用（Rich Internet Applications，缩写为RIA）的出现就是为了解决这个问题。在HTML5发布以前，RIA领域的技术解决方案一直相都是各展所长，并无争议。Adobe体系中，Flash做不了的事情，Flex可以做到；.Net系决策者在选用RIA解决方案时，Silverlight是不二之选。随着HTML 5横空出世，Flex“易主”(这里说的是Adobe将Flex捐给Apache)，Silverlight被“雪藏”(这里指微软停止对Silverlight的更新)，RIA领域的技术解决方案开始变得扑朔迷离。 HTML 5无疑是“明日之星”，苹果公司前CEO乔布斯对它赞赏有加，绝大多数智能手机浏览器均支持HTML 5，基于HTML 5的网站也如雨后春笋般出现。这些似乎预示着HTML 5时代来临，人们试图让决策者相信，Flash/Flex时代已经过去了，HTML 5才是RIA领域的最佳解决方案。那到底真相会是什么呢? HTML 5其实也存在许多劣势，并不完美。HTML 5的浏览器兼容性问题(由于国内传统IE浏览器占了相当大的比重)；要实现html5应用，还要写CSS与JavaScript，增加了人员构成和开发成本，其编写难度也要远大于Flex。在较长一段时间内，HTML5是无法”替代”Flex技术的，也许最终HTML 5与Flex将成为是两种截然不同的技术解决方案，所以，它们是互补的，而非替代。如对Flash/Flex/Html5还不了解，我到互联网上找了一篇相关的文章和大家分享一下: 浅谈 Flash/Flex/HTML5 技术选型
一，Flex4&BlazeDS&JAVA整合:
Myeclipse10.6+Flash Builder 4.6安装配置
二，用户界面设计:
- 播放器界面的设计:
- 专辑制作界面的设计:
三，数据库设计:
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album(专辑表)创建语句:
CREATE TABLE `album` ( `a_id` int(11) NOT NULL AUTO_INCREMENT, `a_name` varchar(20) NOT NULL DEFAULT ‘‘, `a_singer` varchar(20) NOT NULL DEFAULT ‘‘, `a_image` varchar(120) NOT NULL DEFAULT ‘‘, PRIMARY KEY (`a_id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 ;
- song(歌曲表)创建语句:
CREATE TABLE `song` ( `s_id` int(11) NOT NULL AUTO_INCREMENT, `a_id` int(11) NOT NULL, `s_name` varchar(120) NOT NULL DEFAULT ‘‘, `s_source` varchar(150) NOT NULL DEFAULT ‘‘, PRIMARY KEY (`s_id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 ;
四，前端代码物理实现(Flex4部分代码实现):
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播放器界面物理实现，通过在主程序中定义三个不同的自定义组件，”专辑””列表”“播放器控制面板”来构成整个播放器界面。
1，程序入口文件:myMusicPlayer.mxml
<?xml version="1.0" encoding="utf-8"?> <s:Application xmlns: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" skinClass="skinks.ApplicationSkin" xmlns:components="components.*" creationComplete="initApp()"> <fx:Declarations> <!-- 将非可视元素（例如服务、值对象）放在此处 --> <s:RemoteObject id="albumListDist" destination="AlbumServerTaget" result="albumListDist_resultHandler(event)" fault="albumListDist_faultHandler(event)"/> <s:RemoteObject id="songListDist" destination="SongServerTaget" result="songListDist_resultHandler(event)" fault="songListDist_faultHandler(event)"/> </fx:Declarations> <fx:Metadata> [Event(name="changeitem",type="events.MyEvent")] //通过 Event元数据 定义自定义监听事件 </fx:Metadata> <fx:Script> <![CDATA[ import events.MyEvent; import events.MyEvent2; import events.MyEvent3; import mx.collections.ArrayCollection; import mx.collections.ArrayList; import mx.controls.Alert; import mx.events.FlexEvent; import mx.rpc.events.FaultEvent; import mx.rpc.events.ResultEvent; import valueObjects.Song; [Bindable] public var albums:ArrayCollection; public var listData:ArrayCollection=new ArrayCollection(); private var musicSource:Object; private var albumSinger:String; //专辑歌手 /** * 初始化函数 */ private function initApp():void{ albumListDist.getList(); //调用服务端方法 album.addEventListener(MyEvent3.CHANGEITEM,albumList_change_Handler3); //监听自定义事件; /* //将数据放入到值对象中 for each(var temp:Object in data[0]){ var song:Song=new Song(); song.singer=temp.singer; song.song=temp.song; song.musicSource=temp.musicSource; listData.addItem(song); } //列表自动初始化第一个专辑数据绑定 list.data=listData; //专辑绑定数据 album.data=Album; player.musicItem=Object(listData[0]); player.musicNum=listData.length; //Alert.show(data[0].length); */ } /** * 重新选择专辑后调用 */ private function albumList_change_Handler3(event:MyEvent3):void{ albumSinger=event.albumItem.a_singer; songListDist.getSongsById(event.albumItem.a_id); //通过专辑ID请求专辑的数据 } /** *结果函数 albumListDist.getList() 获取专辑列表 */ protected function albumListDist_resultHandler(event:ResultEvent):void { albums=event.result as ArrayCollection; album.data=albums; //绑定专辑数据 albumSinger=albums[0].a_singer; //获取第一个专辑里歌手信息 songListDist.getSongsById(albums[0].a_id); //请求第一个专辑的数据 } protected function albumListDist_faultHandler(event:FaultEvent):void{ //Alert.show(event.message.toString()); } /** * 结果函数 songListDist.getSongsById(albums[0].a_id); 请求第一个专辑的数据 */ protected function songListDist_resultHandler(event:ResultEvent):void { list.data=event.result as ArrayCollection; player.musicItem=event.result[0] as Object; //歌曲实例 player.musicNum=ArrayCollection(event.result).length; //专辑含歌曲数量 专辑长度 player.albumSinger=albumSinger; } protected function songListDist_faultHandler(event:FaultEvent):void{} ]]> </fx:Script> <!--程序主题--> <s:Group horizontalCenter="0" verticalCenter="0"> <!--背景图片--> <s:BitmapImage width="1078" smooth="true" source="@Embed(‘/assets/images/contentBg.png‘)"/> <!--专辑--> <components:Album id="album" x="220" y="70" width="100%" height="100%"/> <!--列表--> <components:List id="list" width="220" height="605" /> <!--播放器控制面板--> <components:Player id="player" /> </s:Group> </s:Application>
2，自定义“专辑”组件:Album.mxml
<?xml version="1.0" encoding="utf-8"?> <s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="group1_creationCompleteHandler(event)"> <fx:Declarations> <!-- 将非可视元素（例如服务、值对象）放在此处 --> </fx:Declarations> <fx:Metadata> [Event(name="changeitem3",type="events.MyEvent3")] </fx:Metadata> <fx:Script> <![CDATA[ import events.MyEvent2; import events.MyEvent3; import mx.collections.ArrayCollection; import mx.controls.Alert; import mx.events.FlexEvent; [Bindable] public var data:ArrayCollection; /** * 初始化函数 */ protected function group1_creationCompleteHandler(event:FlexEvent):void { list.addEventListener(MouseEvent.DOUBLE_CLICK,albumDoubleClick); } /** * 双击事件 */ private function albumDoubleClick(event:MouseEvent):void{ dispatchEvent(new MyEvent3("changeitem3",list.selectedItem)); //分配事件 此事打List组件中调用 } ]]> </fx:Script> <s:BitmapImage left="-20" top="15" source="@Embed(‘/assets/images/RasterizedItems3.png‘)" /> <s:List id="list" left="0" top="43" dataProvider="{data}" itemRenderer="components.AlbumItem" skinClass="skinks.MyAlbums" doubleClickEnabled="true" requireSelection="true" selectedIndex="0"> <s:layout> <s:TileLayout paddingTop="50" paddingLeft="70" verticalGap="40" horizontalGap="40" orientation="rows" requestedColumnCount="4" /> </s:layout> </s:List> </s:Group>
3，自定义“列表”组件:List.mxml
<?xml version="1.0" encoding="utf-8"?> <s:SkinnableContainer xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="init(event)"> <fx:Declarations> <!-- 将非可视元素（例如服务、值对象）放在此处 --> </fx:Declarations> <fx:Metadata> [Event(name="changeitem",type="events.MyEvent")] </fx:Metadata> <fx:Script> <![CDATA[ import events.MyEvent; import events.MyEvent2; import mx.collections.ArrayCollection; import mx.collections.ArrayList; import mx.controls.Alert; import mx.events.FlexEvent; [Bindable] public var data:ArrayCollection; protected function init(event:FlexEvent):void { list.addEventListener(MouseEvent.DOUBLE_CLICK,itemDoubleClick); } private function itemDoubleClick(event:MouseEvent):void{ var temp:Object=list.selectedItem; dispatchEvent(new MyEvent("changeitem",temp)); } ]]> </fx:Script> <s:BitmapImage height="100%" source="@Embed(‘/assets/images/RasterizedItems2.png‘)"/> <s:VGroup top="110" left="0" right="0" bottom="0"> <s:Label color="#FFFFFF" fontFamily="微软雅黑" fontSize="13" paddingLeft="30" text="歌单"/> <s:List id="list" dataProvider="{data}" itemRenderer="components.ListItem" skinClass="skinks.list.SongsList" doubleClickEnabled="true" requireSelection="true" selectedIndex="0" height="100%" width="100%" > <s:layout> <s:VerticalLayout gap="0" paddingLeft="0" /> </s:layout> </s:List> </s:VGroup> </s:SkinnableContainer>
4，自定义“播放器控制面板”组件:Player.mxml
<?xml version="1.0" encoding="utf-8"?> <s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" creationComplete="init()"> <fx:Declarations> <!-- 将非可视元素（例如服务、值对象）放在此处 --> </fx:Declarations> <fx:Metadata> </fx:Metadata> <fx:Script> <![CDATA[ import events.MyEvent; import mx.controls.Alert; import mx.events.FlexEvent; import utils.Tool4DateTime; /** * 服务器IP地址 */ private var serverIP:String="http://localhost:8080"; /** * List对象 */ public var MusicList:List; /** * musicItem Object 音乐信息对象 */ [Bindable] public var musicItem:Object; /** * 列表歌曲数量 */ public var musicNum:int; /** * 歌手名称 */ [Bindable] public var albumSinger:String; /** * 播放器音量 */ private var currentVolum:Number =0.5; /** * 正在播放的音乐的URL字符串 * 从主程序中获得 player.currentMusicUrlString=musicSource; */ public var currentMusicUrlString:String; /** * 正在播放的音乐的URLRequest */ private var currentMusicUrlRequest:URLRequest; /** * 正在播放的音乐的Sound */ private var currentMusicSound:Sound; /** * 正在播放的音乐的SoungChannel * SoundChannel 类控制应用程序中的声音。每个声音均分配给一个声道，而且应用程序可以具有混合在一起的多个声道。SoundChannel 类包含 stop() 方法、用于监控声道幅度（音量）的属性以及用于对声道指定 SoundTransform 对象的属性。 */ private var currentMusicChannel:SoundChannel; /** * 正在播放的音乐的 SoundTransform * SoundTransform 类包含音量和平移的属性。 */ private var currentMusicTransform:SoundTransform; /** * 正在播放的音乐的播放进度参数 */ private var currentMusicPosition:int =0; /** * 正在播放的音乐的总时间 */ private var currentMusicTotleTime:Number =0; /** * 音乐是否正在播放 */ private var isplaying:Boolean = false; private function init():void{ playAndPause.addEventListener(MouseEvent.CLICK,musicPlay); //播放按钮 previous.addEventListener(MouseEvent.CLICK,playPrevious); //上一首 next.addEventListener(MouseEvent.CLICK,playNext); //上一首 playingProcess.addEventListener(Event.CHANGE,playingProcess_changeHandler); //进度条滚动事件 volumeSlider.addEventListener(Event.CHANGE,volumeSlider_changeHandler); //音量条滚动事件 //监听自定义事件 MusicList=parentApplication.list; //设置List对象 MusicList.addEventListener(MyEvent.CHANGEITEM,playerList_change_Handler); //监听自定义事件 } private function musicPlay(event:MouseEvent):void{ if(!isplaying){ //播放 false //此状态为 启动播放器 然后点击播放按钮 状态(空状态) if(currentMusicSound==null&¤tMusicChannel ==null){ currentMusicUrlString=serverIP+musicItem.s_source; currentMusicUrlRequest =new URLRequest(currentMusicUrlString); currentMusicSound = new Sound(); currentMusicSound.load(currentMusicUrlRequest); currentMusicSound.addEventListener(Event.COMPLETE,load_CompleteHandler); currentMusicChannel = currentMusicSound.play();//开始播放 timer_GetCurrentPositionHandler();//同步更新已经播放的时间的计时器 //currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首 }else{//此状态为 暂停后点击播放按钮 状态 currentMusicChannel = currentMusicSound.play(currentMusicPosition); } isplaying=true; }else{ //暂停 //此状态为 播放过程中点击 暂停按钮 状态 currentMusicPosition = currentMusicChannel.position;//记录暂停位置 currentMusicChannel.stop();//暂停 isplaying=false; } currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首 } /** * 自动播放下一首 * @param event * */ protected function autoPlayNext(event:Event):void{//过滤参数问题 if(parentApplication.list.list.selectedIndex>=musicNum-1 ){ parentApplication.list.list.selectedIndex = 0; }else{ parentApplication.list.list.selectedIndex += 1; } if(currentMusicSound!=null&¤tMusicChannel!=null){ currentMusicChannel.stop();//暂停 } clearPar(); musicItem=parentApplication.list.list.selectedItem; currentMusicUrlString=serverIP+musicItem.s_source; currentMusicUrlRequest =new URLRequest(currentMusicUrlString); currentMusicSound = new Sound(); currentMusicSound.load(currentMusicUrlRequest); currentMusicSound.addEventListener(Event.COMPLETE,load_CompleteHandler); playAndPause.selected=true; isplaying =true; currentMusicChannel = currentMusicSound.play();//开始播放 timer_GetCurrentPositionHandler();//同步更新已经播放的时间的计时器 currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首 } /** * 播放上一首 */ protected function playPrevious(event:MouseEvent):void { parentApplication.list.list.selectedIndex--; if(parentApplication.list.list.selectedIndex<0 ){ parentApplication.list.list.selectedIndex = musicNum-1; } if(currentMusicSound!=null&¤tMusicChannel!=null){ currentMusicChannel.stop();//暂停 } clearPar(); musicItem=parentApplication.list.list.selectedItem; currentMusicUrlString=serverIP+musicItem.s_source; currentMusicUrlRequest =new URLRequest(currentMusicUrlString); currentMusicSound = new Sound(); currentMusicSound.load(currentMusicUrlRequest); currentMusicSound.addEventListener(Event.COMPLETE,load_CompleteHandler); playAndPause.selected=true; isplaying =true; currentMusicChannel = currentMusicSound.play();//开始播放 timer_GetCurrentPositionHandler();//同步更新已经播放的时间的计时器 currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首 } /** * 播放下一首 */ protected function playNext(event:MouseEvent):void { parentApplication.list.list.selectedIndex++; if(parentApplication.list.list.selectedIndex>musicNum-1 ){ parentApplication.list.list.selectedIndex = 0; } if(currentMusicSound!=null&¤tMusicChannel!=null){ currentMusicChannel.stop();//暂停 } clearPar(); musicItem=parentApplication.list.list.selectedItem; currentMusicUrlString=serverIP+musicItem.s_source; currentMusicUrlRequest =new URLRequest(currentMusicUrlString); currentMusicSound = new Sound(); currentMusicSound.load(currentMusicUrlRequest); currentMusicSound.addEventListener(Event.COMPLETE,load_CompleteHandler); playAndPause.selected=true; isplaying =true; currentMusicChannel = currentMusicSound.play();//开始播放 timer_GetCurrentPositionHandler();//同步更新已经播放的时间的计时器 currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首 } private function playerList_change_Handler(event:MyEvent):void{ if(currentMusicSound!=null&¤tMusicChannel!=null){ currentMusicChannel.stop();//暂停 } clearPar(); musicItem=event.musicItem; currentMusicUrlString=serverIP+musicItem.s_source; currentMusicUrlRequest =new URLRequest(currentMusicUrlString); currentMusicSound = new Sound(); currentMusicSound.load(currentMusicUrlRequest); currentMusicSound.addEventListener(Event.COMPLETE,load_CompleteHandler); playAndPause.selected=true; isplaying =true; currentMusicChannel = currentMusicSound.play();//开始播放 timer_GetCurrentPositionHandler();//同步更新已经播放的时间的计时器 currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首 } /** * 清除参数 * currentMusicSound = null; * currentMusicChannel = null; * currentMusicPosition = 0; * */ private function clearPar():void{ currentMusicSound = null; currentMusicChannel = null; currentMusicPosition = 0; } /** * 正在播放的歌曲的总时长 */ private var len:int; /** * 文件加载完成 能读取到音乐的总时长 * @param event * */ protected function load_CompleteHandler(event:Event):void{ len = currentMusicSound.length; totalTime.text = Tool4DateTime.millionSecond2MinuteSecond(len); } /** * 同步更新已经播放的时间的计时器 * */ protected function timer_GetCurrentPositionHandler():void{ var clock:Timer = new Timer(100,int(len/1000/60*10));//每0.1秒更新一次 clock.start(); clock.addEventListener(TimerEvent.TIMER,showTime); } /** * 显示已经播放的总时间 * @param event * */ protected function showTime(event:Event):void{ playingProcess.maximum = int(len/1000)*10;//最大值 playingProcess.value = int(currentMusicPosition/1000*10); //当前值 currentMusicPosition = currentMusicChannel.position; playedTime.text = Tool4DateTime.millionSecond2MinuteSecond(currentMusicPosition); } /** * 播放进度条 可以拖动 * @param event * */ protected function playingProcess_changeHandler(event:Event):void{ if(currentMusicChannel!=null){ currentMusicPosition = playingProcess.value*1000/10;//当前音乐播放进度 currentMusicChannel.stop(); currentMusicChannel = currentMusicSound.play(currentMusicPosition); isplaying=true; playAndPause.selected=true; currentMusicChannel.addEventListener(Event.SOUND_COMPLETE,autoPlayNext);//自动播放下一首 }else{ playingProcess.value=0; } } /** * 音量调节 * @param event * */ protected function volumeSlider_changeHandler(event:Event):void{ if(currentMusicChannel != null){//正在播放时调节音量 currentMusicTransform = currentMusicChannel.soundTransform; currentMusicTransform.volume = volumeSlider.value/10; currentMusicChannel.soundTransform = currentMusicTransform; currentVolum = currentMusicTransform.volume; } currentVolum = volumeSlider.value/10; } ]]> </fx:Script> <s:states> <s:State name="normal" /> <s:State name="disabled" /> </s:states> <!--背景图片--> <s:BitmapImage smooth="true" source="@Embed(‘/assets/images/headBg.png‘)"/> <s:Group id="contentGroup" left="0" right="0" top="0" bottom="0" > <!--播放按钮--> <s:HGroup left="35" bottom="15" verticalAlign="middle" > <s:Button skinClass="skinks.playercontrol.PreviousButton" id="previous" /> <s:ToggleButton id="playAndPause" skinClass="skinks.playercontrol.PlayAndPause" /> <s:Button skinClass="skinks.playercontrol.NextButton" id="next"/> </s:HGroup> <!--音量条--> <s:HGroup left="200" bottom="15" height="50" gap="10" verticalAlign="middle"> <s:BitmapImage source="@Embed(‘/assets/images/MuteButton.png‘)"/> <s:HSlider id="volumeSlider" skinClass="skinks.playercontrol.volume.HSliderSkin" maximum="10" stepSize="1" value="5" /> <s:BitmapImage smooth="true" source="@Embed(‘/assets/images/RasterizedItems10.png‘)"/> </s:HGroup> <s:BitmapImage smooth="true" source="@Embed(‘/assets/images/Shape 14.png‘)" x="365" y="2"/> <!--进度条和歌曲信息--> <s:VGroup left="372" bottom="25" horizontalAlign="center" > <s:Label text="{musicItem.s_name}" color.normal="#D6D3D3" fontFamily.normal="微软雅黑" fontSize.normal="13" fontWeight.normal="bold"/> <s:Label text="{albumSinger}" color.normal="#D6D3D3" fontFamily.normal="微软雅黑" fontSize.normal="11"/> <s:HGroup> <s:Label id="playedTime" text="00:00" color.normal="#D6D3D3" fontFamily.normal="微软雅黑"/> <s:ScrubBar id="playingProcess" skinClass="skinks.playercontrol.scrubbar.ScrubBar"/> <s:Label id="totalTime" text="00:00" color.normal="#D6D3D3" fontFamily.normal="微软雅黑"/> </s:HGroup> </s:VGroup> </s:Group> </s:Group>
关于flex操作音频文件，可以参考我之前做的一个简单音乐播放器实例:
博客中 Flex4/Flash mp3音乐播放器实例 含演示地址
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专辑制作插件物理实现、
MyUpload3.mxml
<?xml version="1.0" encoding="utf-8"?> <s:Application xmlns: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" skinClass="skinks.ApplicationSkink" creationComplete="init()"> <fx:Style source="assets/styles/main.css"/> <fx:Declarations> <!-- 将非可视元素（例如服务、值对象）放在此处 --> </fx:Declarations> <fx:Script> <![CDATA[ import components.Album; import components.GridHeaderRenderer; import components.MultiFileUpload; import events.MyEvent; import mx.collections.ArrayCollection; import mx.collections.ArrayList; import mx.controls.Alert; import mx.utils.StringUtil; import spark.components.gridClasses.GridColumn; [Bindable] private var data=new ArrayCollection([ {id:"1",song:"心愿",sf:".mp3"}, {id:"2",song:"心愿",sf:".mp3"}, {id:"3",song:"心愿",sf:".mp3"}, {id:"4",song:"心愿",sf:".mp3"}, {id:"4",song:"心愿",sf:".mp3"} ]); public var album:Album; //专辑信息上传对象 public var multiFileUpload:MultiFileUpload; //音乐文件上传对象 public var imageTypes:FileFilter = new FileFilter("Images (*.jpg; *.jpeg; *.gif; *.png)" ,"*.jpg; *.jpeg; *.gif; *.png"); public var imagefilesToFilter:Array = new Array(imageTypes); //图片过滤数组 public var ImageUploadDestination:String = "http://localhost:8080/MyUpload4/AlbumAdd"; //专辑信息上传地址 public var musicTypes:FileFilter = new FileFilter("Music Files (*.mp3)","*.mp3"); public var filesToFilter:Array = new Array(musicTypes); //音乐过滤数组 public var uploadDestination:String = "http://localhost:8080/MyUpload4/FileUploadServlet"; //专辑信息上传地址 private function init():void{ album=new Album(albumName,singer,ImageUploadDestination,imagefilesToFilter,img,create); album.addEventListener(MyEvent.COMPLETE,albumUpload); //初始化数据列表头 var _nameColumn = new GridColumn; var _typeColumn = new GridColumn; var _sizeColumn = new GridColumn; _nameColumn.headerText= "File"; _nameColumn.headerRenderer=new ClassFactory(GridHeaderRenderer); _typeColumn.headerText = "File Type"; _typeColumn.width = 80; _typeColumn.headerRenderer=new ClassFactory(GridHeaderRenderer); _sizeColumn.headerText = "File Size"; _sizeColumn.width = 150; _sizeColumn.headerRenderer=new ClassFactory(GridHeaderRenderer); var _columns = new ArrayList([_nameColumn,_typeColumn,_sizeColumn]); filesDG.columns=_columns; } private function albumUpload(e:MyEvent):void{ var postVariables:URLVariables = new URLVariables; postVariables.id = e.data; multiFileUpload = new MultiFileUpload( filesDG, browseBTN, clearButton, delButton, upload_btn, progressbar, uploadDestination, postVariables, 10240000, filesToFilter ); // var test=filesDG.columns.getItemAt(0); } ]]> </fx:Script> <s:Group width="460" verticalCenter="0" horizontalCenter="0"> <s:layout> <s:VerticalLayout verticalAlign="middle" horizontalAlign="center"/> </s:layout> <!--专辑信息--> <s:Group width="100%"> <s:Button id="create" right="0" width="60" height="150" label="创建专辑" enabled="true" skinClass="skinks.ButtonSkin1"/> <s:SkinnableContainer width="400" height="150" skinClass="skinks.SkinnableContainer"> <s:Image id="img" left="10" top="10" width="130" height="130" scaleMode="zoom" smooth="true" source="assets/images/album.png"/> <s:VGroup width="100%" height="100%" top="10" left="140" bottom="10" right="10" gap="0"> <s:HGroup width="100%" height="100%" verticalAlign="middle" paddingLeft="10"> <s:Label width="50" color="#FFFFFF" fontFamily="微软雅黑" fontSize="14" text="专辑名" textAlign="right"/> <s:TextInput id="albumName" width="180" height="30" borderVisible="false" fontFamily="微软雅黑" fontSize="14"/> </s:HGroup> <s:HGroup width="100%" height="100%" verticalAlign="middle" paddingLeft="10"> <s:Label width="50" color="#FFFFFF" fontFamily="微软雅黑" fontSize="14" text="歌手" textAlign="right"/> <s:TextInput id="singer" width="180" height="35" borderVisible="false" fontFamily="微软雅黑" fontSize="14"/> </s:HGroup> </s:VGroup> </s:SkinnableContainer> </s:Group> <!--数据列表--> <s:DataGrid id="filesDG" width="460" color="#FFFFFF" fontFamily="微软雅黑" fontSize="13" requestedRowCount="4" rowHeight="70" skinClass="skinks.DG"> <!--<s:columns> <s:ArrayList> <s:GridColumn dataField="id" headerText="#" headerRenderer="components.GridHeaderRenderer" itemRenderer="components.GridItemRenderer"></s:GridColumn> <s:GridColumn dataField="song" headerText="歌曲" headerRenderer="components.GridHeaderRenderer" itemRenderer="components.GridItemRenderer"></s:GridColumn> <s:GridColumn dataField="sf" headerText="后缀" headerRenderer="components.GridHeaderRenderer" itemRenderer="components.GridItemRenderer"></s:GridColumn> </s:ArrayList> </s:columns>--> </s:DataGrid> <mx:ProgressBar id="progressbar" width="100%" height="15" labelPlacement="center" barSkin="skinks.ProgressBar.CustomProgressSkin" trackSkin="skinks.ProgressBar.CustomProgressBarTrackSkin" color="0xFFFFFF" minimum="0" visible="true" maximum="100" label="CurrentProgress 0%" direction="right" mode="manual" /> <s:HGroup gap="0"> <s:Button id="browseBTN" label="浏览" fontFamily="微软雅黑"/> <s:Button id="upload_btn" label="上传" fontFamily="微软雅黑"/> <s:Button id="delButton" label="移除" fontFamily="微软雅黑"/> <s:Button id="clearButton" label="移除全部" fontFamily="微软雅黑"/> </s:HGroup> </s:Group> </s:Application>
关于文件上传部分，是根据MultiFile Upload插件，通过自定义UI组件皮肤完成，可以参考我之前的一个修改实例:
五，后端代码物理实现(JAVA部分代码物理实现):
AlbumDao.java
package com.dao; import java.awt.List; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import com.bean.Album; import com.resource.JDBCUtilSingle; public class AlbumDao { /** * 插入专辑信息 返回ID号 * @param a_name * @param a_singer * @param a_image * @return */ public int addAlbum(String a_name,String a_singer,String a_image){ Connection connection=null; PreparedStatement statement=null; ResultSet rs=null; connection=JDBCUtilSingle.getInitJDBCUtil().getConnection(); int id=0; try { //专辑信息插入 String sql="insert into album(a_name,a_singer,a_image) values(?,?,?)"; statement=connection.prepareStatement(sql); statement.setString(1,a_name); statement.setString(2,a_singer); statement.setString(3,a_image); //System.out.println(sql); statement.executeUpdate(); //获取插入ID rs = statement.getGeneratedKeys(); rs.next(); id = rs.getInt(1); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } JDBCUtilSingle.getInitJDBCUtil().closeConnection(rs, statement, connection); return id; } /** * 获取所有专辑信息 * @return 返回专辑列表 */ public ArrayList selectAlbum(){ Connection connection=null; PreparedStatement statement=null; ResultSet rs=null; connection=JDBCUtilSingle.getInitJDBCUtil().getConnection(); ArrayList albums=new ArrayList(); try { //专辑信息插入 String sql="select * from album"; statement=connection.prepareStatement(sql); rs=statement.executeQuery(); while(rs.next()){ albums.add(new Album(rs.getInt("a_id"), rs.getString("a_name"), rs.getString("a_singer"), rs.getString("a_image"))); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally{ JDBCUtilSingle.getInitJDBCUtil().closeConnection(rs, statement, connection); } return albums; } }
SongDao.java
package com.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import com.bean.Album; import com.bean.Song; import com.resource.JDBCUtilSingle; public class SongDao { public int addSongs(int a_id,String s_name,String s_source){ Connection connection=null; PreparedStatement statement=null; ResultSet rs=null; connection=JDBCUtilSingle.getInitJDBCUtil().getConnection(); int tag=0; try { String sql="insert into song(a_id,s_name,s_source) values(?,?,?)"; statement=connection.prepareStatement(sql); statement.setInt(1,a_id); statement.setString(2,s_name); statement.setString(3,s_source); tag=statement.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } JDBCUtilSingle.getInitJDBCUtil().closeConnection(rs, statement, connection); return tag; } public ArrayList getSongs(int a_id){ ArrayList songs=new ArrayList(); Connection connection=null; PreparedStatement statement=null; ResultSet rs=null; connection=JDBCUtilSingle.getInitJDBCUtil().getConnection(); try { String sql="select * from song where a_id="+a_id; statement=connection.prepareStatement(sql); rs=statement.executeQuery(); while(rs.next()){ songs.add(new Song(rs.getInt("s_id"), rs.getInt("a_id"), rs.getString("s_name"), rs.getString("s_source"))); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally{ JDBCUtilSingle.getInitJDBCUtil().closeConnection(rs, statement, connection); } return songs; } }
好吧，就写到这里了，因为代码是较早之前写的了，由于学校放假，闲来没事，就那之前的代码翻看了一遍，由于时间久远，也没写什么注释，在代码的语法和程序逻辑上，自己也硬是看了半天才回过神来。现在在代码中加了一些注释，添加了一些歌曲内容，已上传到测试空间中，欢迎大家来测试。由于本人水平有限，如文章在表述或代码方面有何不妥之处，欢迎批评指正。
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作者:Li-Cheng
由于本人水平有限，文章在表述和代码方面如有不妥之处，欢迎批评指正。留下你的脚印，欢迎评论哦。你也可以关注我，一起学习哦！