如何在JAXB XmlAdapter中使用通用对象List [英] How to use generic object List in JAXB XmlAdapter

问题描述

我有两个类似的类，只有一个字符串名称。我想在列表中添加一个XML适配器，以便我可以从每个列表中获取一个CSV字符串。

I have two similar classes, that simply have a string name. I wanted to add an XML adapter to the Lists so that I could get a CSV string from each of them.

我试图像这样声明我的适配器：

I tried to declare my adapter like so:

 public class ListXmlAdapter extends XmlAdapter<String, ArrayList<Object>> {

但是当我尝试使用它时，我得到非法的注释异常，说ListXmlAdapter不适用于任何类型我尝试传入注释 - 例如下面的测试

But when I try to use this I get illegal annotation exceptions saying ListXmlAdapter is not applicable for whatever type I try to pass in at the annotation - such as Test below

@XmlElement
@XmlJavaTypeAdapter(ListXmlAdapter.class)
List<Test> tests = new ArrayList<Test>()

我如何创建我想要用于的适配器我有几个不同对象类型的不同ArrayLists？

How would I create this adapter that I want to use for a few different ArrayLists of different object types I have?

推荐答案

如果将属性类型更改为ArrayList，它将起作用：

If you change the property type to ArrayList it will work:

@XmlElement
@XmlJavaTypeAdapter(ListXmlAdapter.class)
ArrayList<Test> tests = new ArrayList<Test>();

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