自定义生成的类和 Java 程序元素

The following sections describe how to customize generated JAXB classes and Java program elements.

Schema-to-Java

Custom JAXB binding declarations enable you to customize your generated JAXB classes beyond the XML-specific constraints in an XML schema to include Java-specific refinements, such as class and package name mappings.

JAXB provides two ways to customize an XML schema:

• As inline annotations in a source XML schema
• As declarations in an external binding customization file that is passed to the JAXB binding compiler

Code examples that show how to customize JAXB bindings are provided later in this document.

Java-to-Schema

The JAXB annotations defined in the javax.xml.bind.annotation package can be used to customize Java program elements to XML schema mapping. The following table summarizes the JAXB annotations that can be used with a Java package.

Table: JAXB Annotations Associated with a Java Package

@XmlSchema ( 
    xmlns = {}, 
    namespace = "", 
    elementFormDefault = XmlNsForm.UNSET, 
    attributeFormDefault = XmlNsForm.UNSET
)

@XmlAccessorType (
    value = AccessType.PUBLIC_MEMBER 
)

@XmlAccessorOrder (
    value = AccessorOrder.UNDEFINED
)

@XmlSchemaType (
    namespace = 
    "http://www.w3.org/2001/XMLSchema", 
    type = DEFAULT.class
)

The following table summarizes JAXB annotations that can be used with a Java class.

Table: JAXB Annotations Associated with a Java Class

@XmlType (
    name = "##default", 
    propOrder = {""}, 
    namespace = "##default", 
    factoryClass = DEFAULT.class, 
    factoryMethod = ""
)

@XmlRootElement (
    name = "##default", 
    namespace = "##default" 
)

The following table summarizes JAXB annotations that can be used with a Java enum type.

Table: JAXB Annotations Associated with a Java enum Type

@XmlEnum ( value = String.class )

 
@XmlType (
    name = "##default", 
    propOrder = {""}, 
    namespace = "##default", 
    factoryClass = DEFAULT.class, 
    factoryMethod = ""
)

@XmlRootElement (
    name = "##default", 
    namespace = "##default" 
)

The following table summarizes JAXB annotations that can be used with Java properties and fields.

Table: JAXB Annotations Associated with Java Properties and Fields

@XmlElement (
    name = "##default", 
    nillable = false, 
    namespace = "##default", 
    type = DEFAULT.class, 
    defaultValue = "\u0000"
)

@XmlElementRef (
    name = "##default", 
    namespace = "##default", 
    type = DEFAULT.class
)

@XmlElementWrapper (
    name = "##default", 
    namespace = "##default", 
    nillable = false
)

@XmlAnyElement (
    lax = false, 
    value = W3CDomHandler.class
)

@XmlAttribute (
    name = ##default, 
    required = false, 
    namespace = "##default" 
)

The following table summarizes the JAXB annotation that can be used with object factories.

Table: JAXB Annotations Associated with Object Factories

@XmlElementDecl (
    scope = GLOBAL.class, 
    namespace = "##default", 
    substitutionHeadNamespace = "##default", 
    substitutionHeadName = ""
)

The following table summarizes JAXB annotations that can be used with adapters.

Table: JAXB Annotations Associated with Adapters

@XmlJavaTypeAdapter ( type = DEFAULT.class )