我如何用JAXB编组java.util.List，如JAX-RS（CXF和Jersey） [英] How do I marshal java.util.List with JAXB like JAX-RS (CXF, and Jersey) do

问题描述

似乎最新的JAX-RS可以处理将java.util.List作为XMLRootElement返回的方法，但普通的JAXB不能。
我想模仿CXF和泽西岛正在做的事情。

换句话说，我想列出一个名单，就像CXF和泽西一样。
通常，如果您尝试使用JAXB封送列表，则会获得根元素异常。
如何在不必制作包装物的情况下解决这个问题？

编辑：谢谢你的答案，但我很熟悉使用@XmlElementWrapper但是它甚至没有接近模拟JAX-RS正在做什么。

JAX-RS执行此操作：

  @XmlRootElement（name =dog）
 public class Dog {
 private String name; 
 public String getName（）{return this.name; } 
 // Setter也是
} 
  

现在如果我序列化一个列表狗：

 序列化（List< Dog> dogs）; 
  

XML应该是（JAX-RS的作用）：

 < dogs> 
< dog>< name> Rascal< / name>< / dog> 
< / dogs> 
  

所以你可以看到我不想为每个域对象创建一个包装器对象。

解决方案

Blaise Doughan我相信这里显示了一个很好的解决方案：是否可以通过编程方式配置JAXB？

和

http://blog.bdoughan.com/2012/11/creating-generic-list-wrapper-in-jaxb.html

<虽然在某种程度上稍有不同的用例：

http://blog.bdoughan.com/2012/02/xmlanyelement-and-xmladapter.html

It seems the latest JAX-RS can handle methods returning java.util.List as the XMLRootElement but normal JAXB cannot. I would like to mimic what CXF and Jersey are doing.

In other words I would like to Marshal a List and just like CXF and Jersey do. Normally if you try to marshal a list with JAXB you get the Root Element exception. How do I get around this with out having to make a wrapping object?

EDIT: Thanks for the many answers but I'm very familiar with the @XmlElementWrapper but that does not even come close to simulating what JAX-RS is doing.

JAX-RS does this:

@XmlRootElement(name="dog")
public class Dog {
    private String name;
    public String getName() { return this.name; }
    //Setter also
}

Now if I serialize a list of dogs:

serialize(List<Dog> dogs);

XML should be (what JAX-RS does):

<dogs>
    <dog><name>Rascal</name></dog>
</dogs>

So you can see I don't want to have to make a wrapper object for every single domain object.

解决方案

Blaise Doughan I believe shows a good solution for this problem here: Is it possible to programmatically configure JAXB?

and

http://blog.bdoughan.com/2012/11/creating-generic-list-wrapper-in-jaxb.html

and somewhat here albeit slightly different use case:

http://blog.bdoughan.com/2012/02/xmlanyelement-and-xmladapter.html

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