java 如何使用 JAXB 设置默认命名空间
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How to set the default namespace using JAXB
提问by user86834
I have a ATOM-XML representation of my data that is returned via a Spring MVC web service. I'm using JAXB to do the serialization, I have a number of namespaces but I want the default namespace set to Atom with no prefix. Here is what I have so far in package-info.javabut the atom prefix is being set to ns3.
我有一个通过 Spring MVC Web 服务返回的数据的 ATOM-XML 表示。我正在使用 JAXB 进行序列化，我有许多命名空间，但我希望将默认命名空间设置为没有前缀的 Atom。这是我到目前为止的内容，package-info.java但原子前缀被设置为 ns3。
@XmlSchema(namespace = com.mycomponay.foo.ATOM_NAMESPACE,
xmlns = {
@XmlNs(prefix = "foo", namespaceURI = com.mycomponay.foo.NAMESPACE_FOO),
}, elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
package com.mycompany.web;
import javax.xml.bind.annotation.XmlNs;
Also I noticed the namespaces display in chrome but not in Firefox.
我还注意到命名空间显示在 chrome 中，但不在 Firefox 中。
回答by bdoughan
Try adding an @XmlNsannotation with prefix ""for the namespace you want to appear as the default.
尝试为要显示为默认名称的命名空间添加@XmlNs带有前缀的注释""。
@XmlSchema(
namespace = com.mycompany.foo.ATOM_NAMESPACE,
xmlns = {
@XmlNs(prefix = "", namespaceURI = com.mycompany.foo.ATOM_NAMESPACE),
@XmlNs(prefix = "foo", namespaceURI = com.mycompany.foo.NAMESPACE_FOO)
},
elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
package com.mycompany.web;
import javax.xml.bind.annotation.*;
Note:
笔记：
The namespaces specified in the @XmlSchemaannotation are meant to affect the generation of the XML Schema and are not guaranteed to be used when a object model is marshalled to XML. However EclipseLink JAXB (MOXy)and recent versions of the JAXB reference implementationwill use them whenever possible.
@XmlSchema注解中指定的命名空间旨在影响 XML Schema 的生成，并且不能保证在将对象模型编组为 XML 时使用。但是EclipseLink JAXB (MOXy)和最新版本的JAXB 参考实现将尽可能使用它们。
For More Information
想要查询更多的信息
回答by lwpro2
if you are using separate class for XML element, annotate it with namespace="", would work.
如果您为 XML 元素使用单独的类，用 namespace="" 注释它，会起作用。
