如何在XSD中为基类型生成@XmlRootElement类?
我在使用XJC从XSD生成具有适当JAXB注释的Java类时遇到了一些问题。
我有一个相对简单的XSD文件来定义我的XML架构。XSD 中的复杂类型利用了使用标记的继承。我遇到的问题是,我需要所有复杂类型来生成带有.<xs:extension>
@XmlRootElement
不幸的是,XJC 生成类的方式意味着只有派生类才能获得(而不是基类)。我正在使用简单的全局绑定指令来确保它解决了我在 XJC 中遇到的许多其他问题。@XmlRootElement
下面是 XSD 的示例代码段:
<xs:schema version="1.0" targetNamespace="http://www.knowledgemill.com/kmcs"
xmlns:kmcs="http://www.knowledgemill.com/kmcs"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
jaxb:version="2.0"
xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
jaxb:extensionBindingPrefixes="xjc"
elementFormDefault="qualified">
<xs:annotation>
<xs:appinfo>
<jaxb:globalBindings>
<xjc:simple />
</jaxb:globalBindings>
</xs:appinfo>
</xs:annotation>
<xs:element name="Artifact" type="kmcs:Artifact"/>
<xs:element name="EmailArtifact" type="kmcs:EmailArtifact"/>
<xs:complexType name="Artifact">
<xs:sequence>
<xs:element name="artifactId" type="xs:string" minOccurs="0"/>
<xs:element name="artifactType" type="xs:string" minOccurs="0"/>
<xs:element name="contentHash" type="xs:string" minOccurs="0"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="EmailArtifact">
<xs:complexContent>
<xs:extension base="kmcs:Artifact">
<xs:sequence>
<xs:element name="subject" type="xs:string" minOccurs="0"/>
<xs:element name="threadSubject" type="xs:string" minOccurs="0"/>
<xs:element name="from" type="xs:string" minOccurs="0"/>
<xs:element name="to" type="xs:string" minOccurs="0"/>
<xs:element name="cc" type="xs:string" minOccurs="0"/>
<xs:element name="bcc" type="xs:string" minOccurs="0"/>
<xs:element name="messageId" type="xs:string" minOccurs="0"/>
<xs:element name="date" type="xs:date" minOccurs="0"/>
<xs:element name="size" type="xs:long" minOccurs="0"/>
<xs:element name="hasAttachment" type="xs:boolean" minOccurs="0"/>
<xs:element name="sensitivity" type="xs:string" minOccurs="0"/>
<xs:element name="headerHash" type="xs:string" minOccurs="0"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:schema>
从上面的代码片段中可以看出, 扩展 .EmailArtifact
Artifact
的 java 类代码包含以下内容:EmailArtifact
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "EmailArtifact", propOrder = {
"subject",
"threadSubject",
"from",
"to",
"cc",
"bcc",
"messageId",
"date",
"size",
"hasAttachment",
"sensitivity",
"headerHash"
})
@XmlSeeAlso({
ExtendedEmail.class
})
@XmlRootElement(name = "EmailArtifact")
public class EmailArtifact
extends Artifact
{
protected String subject;
protected String threadSubject;
protected String from;
protected String to;
protected String cc;
protected String bcc;
protected String messageId;
@XmlSchemaType(name = "date")
protected XMLGregorianCalendar date;
protected Long size;
protected Boolean hasAttachment;
protected String sensitivity;
protected String headerHash;
的 java 类代码包含以下内容:Artifact
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "Artifact", propOrder = {
"artifactId",
"artifactType",
"contentHash"
})
@XmlSeeAlso({
ManagedDocArtifact.class,
EmailArtifact.class
})
public class Artifact {
protected String artifactId;
protected String artifactType;
protected String contentHash;
在 中,我们可以看到它包含 ,但基类型不包含 。EmailArtifact
@XmlRootElement
Artifact
@XmlRootElement
如何强制 XJC 为所有类(包括基类型)生成。@XmlRootElement