String to JSON , JSON to ArrayCollection
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import com.adobe.serialization.json.JSON
var rawData:String = String('[{"name":"zhanzhihu","age":22,"gender":"male"},{"name":"zhanzhihu2","age":22,"gender":"male"}]');
var ac:ArrayCollection = new ArrayCollection(JSON.decode(rawData) as Array );
注意:String中属性必须带上"",如"name"。