本文介绍了如何(un)使用JAXB2将列表或数组编组为根元素?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我想使用JAXB2注释对文档进行编组和解组,其结构如下:

I would like to marshall and unmarshall documents with JAXB2 annotations that are structured as follows:

<mylist>
  <element />
  <element />
  <element />
</mylist>

这是一个格式良好的XML文档,它代表了一系列元素。

It's a well-formed XML document, which represents a sequence of elements.

显而易见的事情导致包含列表的某种根元素:

The obvious thing to do results in a root element of some kind containing the list:

@XmlRootElement(name="container")
public class Container {
    @XmlElement
    @XmlElementWrapper(name="mylist")
    public List<Element> getElements() {...}
}

但是我得到一份关于马歇尔的文件使用多余的根元素:

But then I get a document on marshall with a superfluous root element:

<container>
  <mylist>
    <element />
    <element />
    <element />
  </mylist>
</container>

我正在努力解决如何使用JAXB2 - 我如何(联合国)编组一个未包含在另一个对象中的列表或数组?

I'm strugging to work out how to do this with JAXB2 - how do I (un)marshall a list or array that is not contained by another object?

推荐答案

您可以创建一个包含集合的通用列表包装类任何用 @XmlRootElement 注释的类的。编组时,可以将其包装在 JAXBElement 的实例中,以获得所需的根元素。

You could create a generic list wrapper class that could contain a collection of any class annotated with @XmlRootElement. When marshalling you can wrap it in an instance of JAXBElement to get the desired root element.

import java.util.*;
import javax.xml.bind.annotation.XmlAnyElement;

public class Wrapper<T> {

    private List<T> items = new ArrayList<T>();

    @XmlAnyElement(lax=true)
    public List<T> getItems() {
        return items;
    }

}

完整示例




  • Is it possible to programmatically configure JAXB?
  • http://blog.bdoughan.com/2012/11/creating-generic-list-wrapper-in-jaxb.html

这篇关于如何(un)使用JAXB2将列表或数组编组为根元素?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

09-26 06:05