actionscript中读取本地文件操作有两种代码如下
1.使用File和FileStream两个类,FileStream负责读取数据的所以操作:(同步操作)
var stream:FileStream = new FileStream(); var file:File = new File('E:/test.txt');//绑定一个文件 stream.open(file,FileMode.READ);//读取文件 trace(stream.readMultiByte(stream.bytesAvailable,'utf-8')); stream.close();
稍微需要注意的一点是我们的File()函数里传的路径字符串,里面全都使用的是正斜杠,如果使用了反斜杠,你就会收到来自程序的错误。
2.仅File类(异步操作)
private var file:File; public function Tracer() { file =new File('E:/daili.txt');//绑定一个文件 file.addEventListener(Event.COMPLETE,onComplete); file.load();//执行读取操作 } private function onComplete(event:Event):void { vardata:ByteArray = file.data; trace(data.readMultiByte(data.bytesAvailable,'utf-8')); }
3.使用File和FileStream(异步操作)
var sourceFile:File = File.documentsDirectory.resolvePath("Apollo Test/test.txt"); var stream:FileStream = new FileStream(); stream.addEventListener(Event.COMPLETE, readBytes); stream.openAsync(sourceFile, FileMode.READ); function readBytes(e:Event):void { varbytes:ByteArray = newByteArray(); trace("position 0:", stream.position);// 0 bytes[0] = stream.readByte(); trace("position 1:", stream.position);// 1 fileStream.readBytes(bytes, stream.position,4); trace("position 2:", stream.position);// 5 stream.close(); }