JAXB：如何將元素與名稱空間綁定

Question

他是我的XML托管在遠程計算機上：

<?xml version="1.0" encoding="UTF-8"?>
<store xmlns="http://mydomain.com/store/schemas">
    <!-- My Book store-->
    <book location="vk 1">
        <title>Learning JAXB</title>
        <author>Joe Blogg</author>
    </book>
    <book location="vk 1">
        <title>Learning JAXB SE</title>
        <author>Joe Blogg</author>
    </book>
</store>

我的裝訂書如下：

書籍裝訂：

@XmlRootElement(name = "book")
@XmlType(propOrder = { "title", "author"})
public class Book
{
 private String title;
 private String author;
 private String location;

 @XmlElement(name = "title")
 public String getTitle()
 {
  return title;
 }

 public void setTitle(String title)
 {
  this.title=title;
 }

 @XmlAttribute(name = "location")
 public String getLocation()
 {
  return location;
 }

 public void setLocation(String location)
 {
  this.location = location;
 }

 @XmlElement(name = "author")
 public String getAuthor()
 {
  return author;
 }

 public void setAuthor(String author)
 {
  this.author = author;
 }
}

商店綁定：

@XmlRootElement(name = "store", namespace = "http://mydomain.com/store/schemas")
public class Store
{
 private List<Book> books;

  @XmlElement(name="book")
  public List<Book> getBooks()
  {
    return books;
  }

  public void setBooks(List<Book> books)
  {
    this.books= books;
  }
}

我將按照以下說明解組XML文件：

  JAXBContext context = JAXBContext.newInstance(Store.class);
  Unmarshaller unmarshaller = context.createUnmarshaller();
  URL url = new URL("http://mydomain/files/store.xml");
  Store s= (Store) unmarshaller.unmarshal(url);
  System.out.println(s.getBooks());// Prints null

當我調用getBooks()我們得到空值。 有人可以在這里發現我在做什么錯嗎？

Answer 1

skaffman提供的答案不正確。 您可以通過@XmlSchema在包級別指定名稱空間，或者使用@XmlType在類級別指定名稱空間，並將其用於限定字段/屬性：

欲獲得更多信息

• http://blog.bdoughan.com/2010/08/jaxb-namespaces.html

Answer 2

我不確定100％，但是我認為可以通過在包級別（package-info.java）使用@XmlSchema批注來省略此重復項。