JAX-B - 如何将架构元素映射到现有Java类 [英] JAX-B - How to map a schema element to an existing Java class
问题描述
可能重复:
jaxb xjc映射到现有域对象
我正在使用JAX-B从XML模式生成Java类。
I am using JAX-B to generate Java classes from an XML schema.
我希望将模式中的一个元素绑定到项目中存在的Java类。我的绑定是在.xjb文件中完成的。我已经尝试了几种方法,但无法获得任何工作。
There is one element in my schema that I would like to bind to a Java class that exists in my project. My binding is done in a .xjb file. I have tried several approaches but can't get anything to work.
这可能吗?
如果是这样,怎么样?
Is this possible? If so, how?
这是我的问题的一个较小的例子:
Here is a smaller example of my problem:
My Existing Java class:
My Existing Java class:
package com.existing;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;
@XmlAccessorType(XmlAccessType.FIELD)
public class Existing {
private String prop;
public String getProp() { return prop; }
public void setProp(String prop) { this.prop = prop; }
}
我的架构:
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.baloiselife.com/xpression/policy"
xmlns="http://www.baloiselife.com/xpression/policy" >
<xs:element name="root_node">
<xs:complexType>
<xs:sequence>
<xs:element name="some_other_propery" type="xs:string"/>
<!-- I want this element to map onto my existing Java class -->
<xs:element name="special_element" type="existing_type" minOccurs="0" />
</xs:sequence>
</xs:complexType>
</xs:element>
<!-- I want this element to be ignored, and instead my Java class used -->
<xs:complexType name="existing_type">
<xs:sequence>
<xs:element name="prop" type="xs:string" minOccurs="0" />
</xs:sequence>
</xs:complexType>
那么任何想法我的绑定应该是什么?
我尝试使用jxb:class设置,但无法使其工作。
我的最终结果有两个要求:
So any ideas what my binding should be? I tried using the jxb:class setting, but could not get it to work. My end result has two requirements:
- ExistingType类是从生成的
- RootNode类有一个Existing类型的元素,它映射到我现有的Java类
推荐答案
您可以使用外部绑定文件来配置XJC以执行您想要的操作。
You can use an external binding file to configure XJC to do what you want.
binding.xjb
<jxb:bindings
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:jxb="http://java.sun.com/xml/ns/jaxb"
version="2.1">
<jxb:bindings schemaLocation="yourSchema.xsd">
<jxb:bindings node="//xs:complexType[@name='existing_type']">
<jxb:class ref="com.existing.Existing"/>
</jxb:bindings>
</jxb:bindings>
</jxb:bindings>
XJC致电
xjc -d outputDir -b binding.xjb yourSchema.xsd
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