为了在开发过程中，测试正则表达式更方便，用Flex编写了下面的正则表达 式测试工具，也大家分享，欢迎提出改进意见
在独立的窗口中查看：http://my.jhost.cn/iihe602_2/flex/sdk3/RegexTester.html
现在样例 比较少，今后将逐渐增加
1 <?xml version="1.0" encoding="utf-8"?>
2 <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" horizontalAlign="left"
3 backgroundColor="white" fontSize="12" creationComplete="requestExamplesHandler()">
4
5 <mx:Array id="options">
6 <mx:Object label="全部匹配" data="g"/>
7 <mx:Object label="忽略大小写" data="i"/>
8 <mx:Object label="匹配多行" data="m"/>
9 <mx:Object label="匹配换 行符" data="x"/>
10 <mx:Object label=" 是否允许扩展点表达式" data="e"/>
11 </mx:Array>
12
13 <mx:ApplicationControlBar dock="true">
14 <mx:Label text="选项："/>
15 <mx:Repeater id="repeaterOptions" dataProvider="{options}">
16 <mx:CheckBox id="checkboxOption" label="{repeaterOptions.currentItem.label}"
17 selected="true" click="optionClick(event)"/>
18 </mx:Repeater>
19 </mx:ApplicationControlBar>
20
21 <mx:HDividedBox width="100%" height="100%">
22 <mx:DividedBox width="70%" height="100%">
23
24 <mx:VBox width="100%" height="15%" minHeight="75">
25 <mx:HBox>
26 <mx:Label text="Pattern:"/>
27 <mx:Spacer width="100%"/>
28 <mx:Button label="match" click="matchHandler(event)"/>
29 <mx:Button label="execute" click="executeHandler (event)"/>
30 </mx:HBox>
31
32 <mx:TextArea id="textPattern" width="100%" height="100%"/>
33 </mx:VBox>
34
35 <mx:VBox width="100%" height="15%" minHeight="75">
36 <mx:HBox>
37 <mx:Label text="Replace with:"/>
38 <mx:Button label="replace" click="replaceHandler(event)"/>
39 </mx:HBox>
40 <mx:TextArea id="textReplaceWith" width="100%" height="100%"/>
41 </mx:VBox>
42
43 <mx:VBox width="100%" height="20%" minHeight="75">
44 <mx:Label text="Search Text:"/>
45 <mx:TextArea id="textSearch" width="100%" height="100%"/>
46 </mx:VBox>
47
48 <mx:VBox width="100%" height="50%" minHeight="75">
49 <mx:Label text="Result:"/>
50 <mx:TextArea id="textResult" width="100%" height="100%"/>
51 </mx:VBox>
52
53 </mx:DividedBox>
54
55 <mx:VBox width="30%" height="100%">
56 <mx:Label text="Examples:"/>
57 <mx:List id="dataExamples" dataProvider="[1,2,3]" width="100%" height="100%"
58 labelField="title" itemClick="itemClickHandler(event)"/>
59 </mx:VBox>
60
61 </mx:HDividedBox>
62
63 <mx:HTTPService id="hsExamples" url="assets/examples.xml" resultFormat="e4x"
64 result="resultHandler (event)"/>
65
66 <mx:Script>
67 <![CDATA[
68 import mx.controls.Alert;
69 import mx.rpc.events.ResultEvent;
70
71 private var patterOptions:String = "gimex";
72
73 private function optionClick(event:MouseEvent):void
74 {
75 patterOptions = "";
76 for (var i:uint = 0; i < checkboxOption.length; i++)
77 {
78 if (checkboxOption[i].selected)
79 patterOptions += options[i].data;
80 }
81 trace(patterOptions);
82 }
83
84 private function matchHandler(event: MouseEvent):void
85 {
86 var pattern:RegExp = new RegExp(textPattern.text, patterOptions);
87 var search:String = textSearch.text;
88 var results:Array = search.match(pattern);
89
90 textResult.text = results.join("\n");
91 }
92
93 private function executeHandler(event:MouseEvent):void
94 {
95 var pattern:RegExp = new RegExp(textPattern.text, patterOptions);
96 var search:String = textSearch.text;
97
98 var result: Array = pattern.exec(search);
99 textResult.text = "";
100 var i:uint = 1;
101 var lastIndex:uint = pattern.lastIndex;
102 while (result != null)
103 {
104 textResult.text += "匹配:" + i++.toString();
105 for (var prop:String in result)
106 {
107 textResult.text += "\n\t" + prop + ": \t" + result[prop];
108 }
109 textResult.text += "\n------------------------------------------- --------------\n";
110 //如果在不是global的情况下，lastIndex始终是0，将导致无限循环，因此， 只能执行1次
111 if (pattern.lastIndex == 0)
112 break;
113
114 result = pattern.exec(search);
115 //两次匹配后lastIndex相等，说明出现了死循环 ，应该退出
116 if (pattern.lastIndex == lastIndex)
117 break;
118
119 lastIndex = pattern.lastIndex;
120 }
121
122 }
123
124 private function replaceHandler(event: MouseEvent):void
125 {
126 var pattern:RegExp = new RegExp(textPattern.text, patterOptions);
127 var replaceWith: String = textReplaceWith.text;
128 var search:String = textSearch.text;
129 textResult.text = search.replace(pattern, replaceWith);
130 }
131
132 private function requestExamplesHandler():void
133 {
134 hsExamples.send();
135 }
136
137 private function resultHandler (event:ResultEvent):void
138 {
139 dataExamples.dataProvider = event.result.item;
140 }
141
142 private function itemClickHandler (event: Event):void
143 {
144 var item:Object = event.target.selectedItem;
145 textPattern.text = item.pattern;
146 textReplaceWith.text = item.replace;
147 textSearch.text = item.search;
148 }
149 ]]>
150 </mx:Script>
151
152 </mx:Application>
153
154