看http://www.eclipse.org/modeling/mdt/?project=xsd#xsd。我们有文字:
“XML Schema Definition是一个参考库,它提供了一个API,用于检查,创建或修改W3C XML Schema的任何代码(独立或作为其他工件的一部分,如XForms或WSDL文档)。” p>
据此,我了解到我可以编写一个使用“XML Schema Definition”API创建XML文件的java类,并且这个创建的XML文件是我可以提供给EMF等工具的文件。 。假设我的理解是正确的(如果不是,请告诉我如何),我将在哪里找到这样一个java类的'hello world'类型示例?
答案 0 :(得分:3)
XSD:
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:jxb="http://java.sun.com/xml/ns/jaxb"
jxb:version="2.0">
<xsd:element name="Greetings" type="GreetingListType"/>
<xsd:complexType name="GreetingListType">
<xsd:sequence>
<xsd:element name="Greeting" type="GreetingType"
maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="GreetingType">
<xsd:sequence>
<xsd:element name="Text" type="xsd:string"/>
</xsd:sequence>
<xsd:attribute name="language" type="xsd:language"/>
</xsd:complexType>
</xsd:schema>
Java类:
import java.util.*;
import javax.xml.bind.*;
import hello.*;
public class Hello {
private ObjectFactory of;
private GreetingListType grList;
public Hello(){
of = new ObjectFactory();
grList = of.createGreetingListType();
}
public void make( String t, String l ){
GreetingType g = of.createGreetingType();
g.setText( t );
g.setLanguage( l );
grList.getGreeting().add( g );
}
public void marshal() {
try {
JAXBElement<GreetingListType> gl =
of.createGreetings( grList );
JAXBContext jc = JAXBContext.newInstance( "hello" );
Marshaller m = jc.createMarshaller();
m.marshal( gl, System.out );
} catch( JAXBException jbe ){
// ...
}
}
}
示例:
Hello h = new Hello();
h.make( "Bonjour, madame", "fr" );
h.make( "Hey, you", "en" );
h.marshal();
输出:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Greetings>
<Greeting language="fr">
<Text>Bonjour, madame</Text>
</Greeting>
<Greeting language="en">
<Text>Hey, you</Text>