jaxb unmarshalling with namespace

Question

這是我的xml，需要將它轉換爲java。我用了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> 

和投擲以下異常 javax.xml.bind.UnmarshalException：意外的元素（URI： 「http://www.ae.com/Event/Load」，地方： 「訂單」）。預計元素< {} LM：訂單>

這是我的解組代碼

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

訂購POJO類

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>();*/ 

} 

能否請你幫我在讀也，目前通過文件讀取，需要閱讀爲XML字符串。

Answer 1

命名空間屬性xmlns:lm="http://www.ae.com/Event/Load"可能是這裏的罪魁禍首。爲了指定命名空間前綴，你可以在@XmlSchema註釋添加到package-info.java文件是這樣的：

@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.*;