SimpleXml框架 - 嵌入式集合 [英] SimpleXml framework - embedded collections

问题描述

我尝试使用简单序列化嵌入式集合。
例如：

I try to serialize embedded collection using simple. For example :

Map<String, List<MyClass>>

我已经在MyClass中添加了必要的注释，我尝试使用@ElementMap，但它不工作：
线程main中的异常org.simpleframework.xml.transform.TransformException：不支持类java.util.ArrayList的转换

I already added necessary annotations in MyClass, i tried with @ElementMap but it doesn't work: Exception in thread "main" org.simpleframework.xml.transform.TransformException: Transform of class java.util.ArrayList not supported

如果只是

@ElementMap Map<String, MyClass>

它工作正常。我不知道要处理嵌入式收藏。我知道 @ElementList 注释，但不知道如何使用它在这种情况下。任何提示？

it works fine. I don't know ho to deal with embedded collection. I know about @ElementList annotation but don't know how to use it in this case. Any hints?

推荐答案

我遇到同样的问题。

public class MyWrapper {

    @ElementList(name="data")
    private List<MyClass> data = new ArrayList<MyClass>();

    public MyWrapper(List<MyClass> data) {
        this.data = data;
    }

    public List<MyClass> getData() {
        return this.data;
    }

    public void setData(List<MyClass> data) {
        this.data = data;
    }

}

p>

And then, instead of

@ElementMap Map<String,List<MyClass>>

...您将有：

@ElementMap Map<String,MyWrapper>

在我的例子中，Map对我的类是完全私有的到地图），所以事实上，我有这个额外的层在这里没有太大的区别。生成的XML当然是粗略的，但在我的例子中，它是可以承受的，因为在我的类之外没有什么是消耗它。希望我有一个比这更好的解决方案，但在这一刻，我被困住了。

In my case, the Map is entirely private to my class (i.e. other classes never get to talk directly to the Map), so the fact that I have this extra layer in here doesn't make much of a difference. The XML that is produced of course, is gross, but again, in my case, it's bearable because there is nothing outside of my class that is consuming it. Wish I had a better solution than this, but at the moment, I'm stumped.

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