我需要在Adobe Air建立XML记录。 我首先想使用某种自动化序列化。 我发现BlexXB图书馆。 I ve生成了简单的记录,并以以下方式标明了这一类别:

package loggingTools
{

    [XmlClass]
    [ConstructorArg(reference="timeStamp")]
    [ConstructorArg(reference="item")]
    [ConstructorArg(reference="action")]
    [ConstructorArg(reference="arguments")]
    [ConstructorArg(reference="success")]
    [Bindable]
    public class MessageAction
    {
    [XmlAttribute()]
    public var timeStamp:Date;

            [XmlAttribute()]
            public var item:String;

            [XmlAttribute()]
            public var action:String;

            [XmlAttribute()]
            public var arguments:String;

            [XmlAttribute()]
            public var success:Boolean;

            public function MessageAction(timeStamp:Date, item:String, action:String, arguments:String, success:Boolean) {
                    this.timeStamp = timeStamp;
                    this.item = item;
                    this.action = action;
                    this.arguments = arguments;
                    this.success = success;

            }

}

I m 试图将单一物体序列化:

public class PlainXMLLogger
{
    //private static var isStarted:Boolean;

    private var logFile:XML;

            [XmlArray(alias = "Log", type="loggingTools.MessageAction")]
            [ArrayElementType("loggingTools.MessageAction")]
    public var messages:Array;

    public function addMessageAction(item:String, action:String, arguments:String, success:Boolean):void {
        var newMessageAction:MessageAction;
        newMessageAction = new MessageAction(new Date(), item, action, arguments, success);
        messages.push(newMessageAction);

    }

public function close():void {

        var logXML:XML = FlexXBEngine.instance.serialize(messages);

        trace(">> XML LOG ");
        trace(logXML.toString() );

    }
}

Now, serialization produces an error: TypeError: Error #1009: Cannot access a property or method of a null object reference. at com.googlecode.flexxb.core::SerializationCore/serialize()

当然,我可以逐个收集所有物体,但我认为这是一个坏的想法。