我正在尝试获取在我的XSD中在xs:complexType中声明的元素的注释。这样的元素是SchemaPreperty类型。但是,与SchemaGlobalElement和SchemaType不同,我可以使用SchemaProperty.getAnnotation()
。
这是XSD。我需要访问元素number
的文档。
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="test" type="my-test-type" />
<xs:complexType name="my-test-type">
<xs:sequence>
<xs:element name="number" "xs:int">
<xs:annotation>
<xs:documentation>This is the documentation I need.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:schema>
我该怎么做?它似乎不太可能。
答案 0 :(得分:2)
所以我在XMLBeans FAQ中找到了答案。这是link
我粘贴了常见问题解答的代码,因为只包含链接的答案是不受欢迎的。您可以从这个示例中找出如何使其适应您自己的需求:
public static void someMethod() {
SchemaType t = XmlBeans.getContextTypeLoader().findType(new QName("http://test", "T"));
SchemaProperty[] schemaProperties = t.getProperties();
for (int i = 0; i < schemaProperties.length; i++)
printPropertyInfo(schemaProperties[i]);
System.out.println();
if (t.getContentType() == SchemaType.ELEMENT_CONTENT ||
t.getContentType() == SchemaType.MIXED_CONTENT)
{
SchemaParticle topParticle = t.getContentModel();
// topParticle is non-null if we checked the content
navigateParticle(topParticle);
}
}
public static void navigateParticle(SchemaParticle p)
{
switch (p.getParticleType())
{
case SchemaParticle.ALL:
case SchemaParticle.CHOICE:
case SchemaParticle.SEQUENCE:
// These are "container" particles, so iterate over their children
SchemaParticle[] children = p.getParticleChildren();
for (int i = 0; i < children.length; i++)
navigateParticle(children[i]);
break;
case SchemaParticle.ELEMENT:
printElementInfo((SchemaLocalElement) p);
break;
default:
// There can also be "wildcards" corresponding to <xs:any> elements in the Schema
}
}
public static void printPropertyInfo(SchemaProperty p)
{
System.out.println("Property name=\"" + p.getName() + "\", type=\"" + p.getType().getName()
+ "\", maxOccurs=\"" +
(p.getMaxOccurs() != null ? p.getMaxOccurs().toString() : "unbounded") + "\"");
}
public static void printElementInfo(SchemaLocalElement e)
{
System.out.println("Element name=\"" + e.getName() + "\", type=\"" + e.getType().getName()
+ "\", maxOccurs=\"" +
(e.getMaxOccurs() != null ? e.getMaxOccurs().toString() : "unbounded") + "\"");
SchemaAnnotation annotation = e.getAnnotation();
if (annotation != null)
{
SchemaAnnotation.Attribute[] att = annotation.getAttributes();
if (att != null && att.length > 0)
System.out.println(" Annotation: " + att[0].getName() + "=\"" +
att[0].getValue() + "\"");
}
}
至于属性,常见问题解答甚至没有提及它们,但它们的访问方式不同。这让我非常头疼,因为我试图弄清楚如何访问属性的注释,类似于上面的代码。访问属性的注释非常简单明了。
这是我目前的方法:
public String getAttributeAnnotation(SchemaType t, String attributeLocalName) {
if (null != t) {
SchemaAttributeModel attrModel = t.getAttributeModel();
if (null != attrModel) {
SchemaLocalAttribute[] attributes = t.getAttributeModel().getAttributes();
if (attributes.length > 0) {
SchemaLocalAttribute attr = Arrays.stream(attributes)
.filter(a -> a.getName().getLocalPart().equals(attributeLocalName))
.findFirst().orElse(null);
if (null != attr) {
String annotationDoc = getAnnotationDocumentation(attr.getAnnotation());
return annotationDoc;
}
}
}
}
return null;
}
这是我的getAnnotationDocumentation()
(可以进行改进!)。您可以使用它来检索元素和属性的xs:annotation中的xs:documentation。
public static String getAnnotationDocumentation(SchemaAnnotation an) {
if (null != an) {
StringBuilder sb = new StringBuilder();
XmlObject[] userInformation = an.getUserInformation();
if (null != userInformation & userInformation.length > 0) {
for (XmlObject obj : userInformation) {
Node docInfo = obj.getDomNode();
NodeList list = docInfo.getChildNodes();
for (int i = 0; i < list.getLength(); i++) {
Node c = list.item(i);
if (c.getNodeType() == Node.TEXT_NODE) {
String str = c.getNodeValue();
sb.append(str.trim());
break;
}
}
}
}
return sb.toString();
}
return null;
}
答案 1 :(得分:0)
我有相同的要求,并且,如果您正在寻找不同的方法,则可以在这里参考我的答案:How to read Xsd-Annotations from Xsd-Schema using Apache XMLBeans?