如何使对象的网络连载到一个文件，而不是一个共享对象？ [英] How to make an object network serialize to a file, not a SharedObject?

问题描述

目前，我做我的模型对象序列化到 SharedObject实例

Currently, I do serialize my model object to the SharedObject instance:

 try {

     var mySo:SharedObject = SharedObject.getLocal("sig");

     mySo.clear();
     mySo.data.model = _model;
     mySo.flush();

  } catch ( e:Error ) {

    Alert.show( 'Leider konnte kein Modell geladen werden.' );

  }

同样，我加载使用SharedObject实例保存的模型。伟大工程。

Likewise, I load the saved model using the SharedObject instance. Works great.

最后，我想为它序列化到一个文件 - 这将失败。方法如下：

Ultimately, I'd like to serialize it to a file - which fails. Here is how:

 var fp: File = File.applicationStorageDirectory;

 fp = fp.resolvePath( PREFS_FILENAME );

 var    _prefsStream:FileStream;
 _prefsStream = new FileStream();
 _prefsStream.open( fp, FileMode.WRITE );
 _prefsStream.endian = Endian.BIG_ENDIAN;

_model.writeExternal( _prefsStream );
_prefsStream.close();

在求补读操作突然崩裂和报告失踪字节。

The complementing read operation suddenly breaks and reports missing bytes.

其实，我无法想象的FileStream / _model.writeExternal（）如何能够序列化，因为它需要以某种方式知道，一个新的序列化操作即将开始。如果它不知道，也无法确定，哪一个对象实例的离开序列化

In fact, I can't image how FileStream / _model.writeExternal() is able to serialize, since it needs to somehow know, that a new serialization operation is about to start. If it doesn't know, it won't be able to determine, which object instances are left to serialize.

因此​​，我的形象，我的观念是完全错误的，或我错过了如何初始化序列化操作。

Thus, I image that my concept is completely wrong or I missed how to initialize the serialization operation.

请解释，我所缺少的。

我很乐意从共享对象读取原始ByteArray并将其写入文件。不幸的是，我没有找到一个方法来从一个共享对象某个属性的ByteArray检索，在我的情况 mySo.data.model 。 我的问题是松散与此相关的一项：为什么删除（DictionaryInstance [关键]）;失败了呢？

I'd be happy to read the raw ByteArray from the shared object and write it to a file. Unfortunately, I didn't find a method to retrieve from a SharedObject a ByteArray of a certain property, in my case mySo.data.model. My question is loosely related to this one: Why does delete( DictionaryInstance[ key ] ); fail?

推荐答案

我曾经不得不在一个外化框架，我建立了执行单元测试，这是我做的：

I once had to perform unit tests on an externalization framework I built and this is how I did it:

byteArray.writeObject(myObject);
byteArray.position = 0;
readValue = byteArray.readObject();

另外，我不认为你应该担心字节序，我觉得默认是Big Endian反正。

Also, I don't think you should have to worry about byte order, I think the default is big endian anyways.

因此​​，对于你的情况，我认为你需要的是这样的：

So, for your case, I think you need something like:

fileStream.writeObject(myObject)

，而不是

myObject.writeExternal(_prefsStream);

运行时应该叫的writeExternal 在模型自动的。

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