测试String和ByteArr的分析效率

 1 package {
 2         import flash.utils.ByteArray;
 3         import flash.errors.EOFError;
 4         import flash.display.Sprite;
 5         import flash.net.LocalConnection;
 6         import flash.utils.getTimer;
 7 
 8         import flash.events.*;
 9         import flash.display.*
10 
11         import flash.text.TextField;
12         public class ByteArrayTest extends Sprite {
13                 private var Test_AMOUNT:int=1000000;//执行次数       
14                 private var testStr:String;//测试字符串
15                 private var testByteArr:ByteArray;//测试二进制字符串
16                 private var strByteArr:ByteArray;
17 
18                 public var btn_1:DisplayObject;
19                 public var btn_2:DisplayObject;
20                 public var times_txt:TextField;
21                 public var totalTime_txt:TextField;
22 
23                 private var testArr:Array;
24 
25 
26 
27                 public function ByteArrayTest() {
28                         testStr="00012,13,5,7";
29                         testByteArr = new ByteArray();
30                         testByteArr.writeMultiByte("00012", "gb2312");
31                         testByteArr.writeMultiByte("13", "gb2312");
32                         testByteArr.writeInt(5);
33                         testByteArr.writeInt(7);
34                         //teatByteArr.writeByte(0)
35                         strByteArr = new ByteArray();
36                         strByteArr.writeMultiByte(testStr, "gb2312");
37 
38                         btn_1.addEventListener(MouseEvent.CLICK,click1);
39                         btn_2.addEventListener(MouseEvent.CLICK,click2);
40 
41                 }
42                 private function click1(Event:MouseEvent):void {
43                         initStr();
44                         Test_AMOUNT = int(times_txt.text);
45                 }
46                 private function click2(Event:MouseEvent):void {
47                         initByteArr();
48                         Test_AMOUNT = int(times_txt.text);
49                 }
50                 //初始化 通过通常手段 显示
51                 private function initStr():void {
52 
53                         var t:Number = getTimer();
54                         for (var i:int=0; i < Test_AMOUNT; i++) {
55                                 strByteArr.position=0;
56                                 var temp:String = strByteArr.readMultiByte(12,"gb2312");
57                                 testArr = temp.split(",");
58                                 testArr[0] = String(testArr[0]);
59                                 testArr[1] = String(testArr[1]);
60                                 testArr[2] = uint(testArr[2]);
61                                 testArr[3] = uint(testArr[3]);
62                         }
63                         trace(testArr);
64                         trace("使用String总共耗时："+Number(getTimer()-t)+"毫秒");
65                         totalTime_txt.text =String(Number(getTimer()-t))
66                 }
67                 //初始化 通过BitmapData快照 显示
68                 private function initByteArr():void {
69                         var t:Number = getTimer();
70                         testArr = new Array;
71                         for (var i:int=0; i < Test_AMOUNT; i++) {
72                                 //if (testByteArr.position != 0) {
73                                 testByteArr.position= 0;
74                                 //}
75                                 testArr[0] = testByteArr.readMultiByte(5, "gb2312");
76                                 testArr[1] = testByteArr.readMultiByte(2, "gb2312");
77                                 testArr[2] = testByteArr.readInt();
78                                 testArr[3] = testByteArr.readInt();
79                         }
80                         trace(testArr);
81                         trace("使用ByteArr总共耗时："+Number(getTimer()-t)+"毫秒");
82                         totalTime_txt.text = String(Number(getTimer()-t))
83                                         }
84 
85                 
86         }
87 }
88 //结果如下：100000次
89 
90 //00012,13,5,7
91 //使用String总共耗时：10736毫秒
92 
93 //00012,13,5,7
94 //使用ByteArr总共耗时：6312毫秒