[英]JAXB XML unmarshalling only sees the root element
I have a problem unmarshalling a rather simple XML-document to plain Java objects. 我有一个问题是将一个相当简单的XML文档解组为纯Java对象。
This is what my XML looks like: 这就是我的XML的样子:
<?xml version="1.0" encoding="UTF-8"?>
<codeSystem xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:hl7-org:v3 vocab.xsd" xmlns="urn:hl7-org:v3">
<name>RoleCode</name>
<desc>Codes voor rollen</desc>
<code code="SON" codeSystem="2.16.840.1.113883.5.111" displayName="natural sonSon ">
<originalText>The player of the role is a male offspring of the scoping entity (parent).</originalText>
</code>
<code code="DAUC" codeSystem="2.16.840.1.113883.5.111" displayName="Daughter">
<originalText> The player of the role is a female child (of any type) of scoping entity (parent) </originalText>
</code>
</codeSystem>
It's part of a much bigger file, a specification of the Hl7v3 code system for representing relationships between persons. 它是更大文件的一部分,是用于表示人与人之间关系的Hl7v3代码系统的规范。
I created two Java classes for the CodeSystem and Code elements: 我为CodeSystem和Code元素创建了两个Java类:
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class CodeSystem
{
private String name;
private String desc;
@XmlElement(name = "code")
private List<Code> codes;
}
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType
public class Code
{
@XmlAttribute
private String code;
@XmlAttribute
private String codeSystem;
@XmlAttribute
private String displayName;
private String originalText;
}
I added a package-info.java containing: 我添加了一个package-info.java,其中包含:
@XmlSchema(
namespace = "urn:hl7-org:v3",
elementFormDefault = XmlNsForm.UNQUALIFIED,
attributeFormDefault = XmlNsForm.UNQUALIFIED,
xmlns = {
@javax.xml.bind.annotation.XmlNs(prefix = "", namespaceURI = "urn:hl7-org:v3")
}
)
package nl.topicuszorg.hl7v3.vocab2enum.model;
import javax.xml.bind.annotation.XmlNsForm;
import javax.xml.bind.annotation.XmlSchema;
Unmarshalling is pretty straightforward: 解组是非常简单的:
JAXBContext context = JAXBContext.newInstance(CodeSystem.class);
Unmarshaller unmarshaller = context.createUnmarshaller();
CodeSystem codeSystem = (CodeSystem) unmarshaller.unmarshal(new File(args[0]));
This however results in an empty CodeSystem object. 但是这会导致一个空的CodeSystem对象。 Nothing except the root element is parsed from the XML.
除了根元素之外,没有任何内容从XML中解析出来。
I can't figure out why the name, desc and code elements aren't recognized. 我无法弄清楚为什么名称,desc和代码元素无法识别。 Do they reside in a different namespace then the root element?
它们是否位于与根元素不同的命名空间中? They shouldn't be, because the namespace declaration in the root element is unprefixed.
它们不应该是,因为根元素中的名称空间声明没有前缀。
What am I missing? 我错过了什么?
In your XML document you have specified a default namespace. 在XML文档中,您指定了一个默认命名空间。 This means that any non-prefixed element is going to be in that namespace.
这意味着任何非前缀元素都将位于该命名空间中。 In the fragment below both the
codeSystem
and name
elements are qualified with the urn:hl7-org:v3
namespace. 在下面的片段中,
codeSystem
和name
元素都使用urn:hl7-org:v3
命名空间进行限定。
<codeSystem xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:hl7-org:v3 vocab.xsd" xmlns="urn:hl7-org:v3">
<name>RoleCode</name>
...
</codeSystem>
You just need to change the elementFormDefault
property on the @XmlSchema
annotation to XmlNsForm.QUALIFIED
. 您只需
@XmlSchema
注释上的elementFormDefault
属性更改为XmlNsForm.QUALIFIED
。 You currently have it as XmlNsForm.UNQUALIFIED
which means that only global elements will be namespace qualified (the one corresponding to @XmlRootElement
in your use case. 您目前将它作为
XmlNsForm.UNQUALIFIED
表示,这意味着只有全局元素将是命名空间限定的(在您的用例中对应于@XmlRootElement
元素)。
@XmlSchema(
namespace = "urn:hl7-org:v3",
elementFormDefault = XmlNsForm.QUALIFIED,
attributeFormDefault = XmlNsForm.UNQUALIFIED,
xmlns = {
@javax.xml.bind.annotation.XmlNs(prefix = "", namespaceURI = "urn:hl7-org:v3")
}
)
package nl.topicuszorg.hl7v3.vocab2enum.model;
import javax.xml.bind.annotation.XmlNsForm;
import javax.xml.bind.annotation.XmlSchema;
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