java - 使用命名空间的 jaxb 解码

Question

这是我的xml，需要将它转换成java。我用过jaxb

<?xml version="1.0"?>
<lm:order Id="PLG24M240U" JD="" aCount="2" SUCount="1" xmlns:lm="http://www.ae.com/Event/Load">
  <lm:master>
   <lm:ID>3</lm:ID>
    <lm:Number>313</lm:Number>
    <lm:ANumber>323</lm:ANumber>     
  </lm:master>
  <lm:detail>
    <lm:ID>3</lm:ID>
    <lm:Number>3131</lm:Number>
    <lm:ANumber>3232</lm:ANumber>      
  </lm:detail>
 <lm:detail>
    <lm:ID>3</lm:ID>
    <lm:Number>3131</lm:Number>
    <lm:ANumber>3232</lm:ANumber>    
  </lm:detail>
  <lm:detail>
    <lm:ID>3</lm:ID>
    <lm:Number>313</lm:Number>
    <lm:ANumber>323</lm:ANumber>    
  </lm:detail>
</lm:order>

并抛出以下异常javax.xml.bind.UnmarshalException:意外元素(uri:“http://www.ae.com/Event/Load”，本地:“Order”)。预期的元素是 <{}lm:Order>

这是我的解码代码

jaxbContext = JAXBContext.newInstance(Order.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Order order = (Order) jaxbUnmarshaller.unmarshal(file);
System.out.println(order );

订购 Pojo 类

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name = "lm:Order")
public class OrderPay {
    @XmlAttribute
    private String Id;
    @XmlAttribute
    private String JD;
    @XmlAttribute
    private String aCount;
    @XmlAttribute
    private String pCount;
    /*@XmlElement
    private Master master;
    @XmlElement
    private List<Detail> details = new ArrayList<Detail>();*/

}

能否请你也帮我阅读，目前正在阅读文件，需要以 XML 字符串的形式阅读。

Answer 1

namespace 属性 xmlns:lm="http://www.ae.com/Event/Load" 可能是这里的罪魁祸首。为了指定命名空间前缀，您可以添加 @XmlSchema对 package-info.java 文件的注释如下:

@XmlSchema(
    namespace="http://www.ae.com/Event/Load",
    elementFormDefault=XmlNsForm.QUALIFIED),
    xmlns={@XmlNs(prefix="lm", namespaceURI="http://www.ae.com/Event/Load")})  

package your.package;
import javax.xml.bind.annotation.*;