Java JAXB是否支持在不进行编组/解编组的情况下修改现有XML文档?
我希望在文档中保留注释、排序等,并使用Java接口就地编辑文档 JAXB能做到这一点吗 其他工具(如XMLBeans)是否可以做到这一点?您可以将JAXB用于此用例: input.xmlJava JAXB是否支持在不进行编组/解编组的情况下修改现有XML文档?,java,xml,jaxb,Java,Xml,Jaxb,我希望在文档中保留注释、排序等,并使用Java接口就地编辑文档 JAXB能做到这一点吗 其他工具(如XMLBeans)是否可以做到这一点?您可以将JAXB用于此用例: input.xml <?xml version="1.0" encoding="UTF-8"?> <customer> <UNMAPPED_ELEMENT_1/> <name>Jane Doe</name> <!-- COMMENT #1 -
<?xml version="1.0" encoding="UTF-8"?>
<customer>
<UNMAPPED_ELEMENT_1/>
<name>Jane Doe</name>
<!-- COMMENT #1 -->
<address>
<UNMAPPED_ELEMENT_2/>
<street>1 A Street</street>
<!-- COMMENT #2 -->
<UNMAPPED_ELEMENT_3/>
<city>Any Town</city>
</address>
<!-- COMMENT #3 -->
<UNMAPPED_ELEMENT_4/>
<phone-number type="home">555-HOME</phone-number>
<!-- COMMENT #4 -->
<phone-number type="cell">555-CELL</phone-number>
<UNMAPPED_ELEMENT_5/>
<!-- COMMENT #5 -->
</customer>
无名氏
奇怪的是,新的活页夹代码对我不起作用,尽管它几乎与我以前使用的解组代码完全相同。这是一个很好用的老代码:File-xmlFile=。。。文件xmlSchema=。。。JAXBContext JAXBContext=JAXBContext.newInstance(Process.class);Unmarshaller Unmarshaller=jaxbContext.createUnmarshaller();unmarshaller.setSchema(SchemaFactory.newInstance(xmlstants.W3C_XML_SCHEMA_NS_URI).newSchema(xmlSchema);Process Process=(Process)unmarshaller.unmarshal(xmlFile);
这是新代码:DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();DocumentBuilder db=dbf.newDocumentBuilder();Document Document=db.parse(xmlFile);JAXBContext JAXBContext=JAXBContext.newInstance(Process.class);Binder Binder=JAXBContext.createBinder();Binder.setSchema(SchemaFactory.newInstance)(xmlstants.W3C_XML_SCHEMA_NS_URI)。newSchema(xmlSchema);Process Process=(Process)Binder.unmarshal(文档);
新代码抛出:javax.xml.bind.UnmarshalException-带有链接异常:[org.xml.sax.SAXParseException:cvc elt.1:找不到元素“process”的声明。]
但在我看来,它们看起来几乎完全一样。有什么想法吗?有人吗?完成了。谢谢你的帮助。更重要的是,感谢MOXy。JDK impl.没有保留这些评论。对于稍后阅读本文的其他人,我确实在java.net metro和jaxb论坛上问了这个问题,但没有任何回应(这是几天后的事).这个论坛看起来像个鬼城。
import java.io.File;
import javax.xml.bind.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.*;
public class BinderDemo {
public static void main(String[] args) throws Exception {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
File xml = new File("input.xml");
Document document = db.parse(xml);
JAXBContext jc = JAXBContext.newInstance(Customer.class);
Binder<Node> binder = jc.createBinder();
Customer customer = (Customer) binder.unmarshal(document);
customer.getAddress().setStreet("2 NEW STREET");
PhoneNumber workPhone = new PhoneNumber();
workPhone.setType("work");
workPhone.setValue("555-WORK");
customer.getPhoneNumbers().add(workPhone);
binder.updateXML(customer);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
t.transform(new DOMSource(document), new StreamResult(System.out));
}
}
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<customer>
<UNMAPPED_ELEMENT_1/>
<name>Jane Doe</name>
<!-- COMMENT #1 -->
<address>
<UNMAPPED_ELEMENT_2/>
<street>2 NEW STREET</street>
<!-- COMMENT #2 -->
<UNMAPPED_ELEMENT_3/>
<city>Any Town</city>
</address>
<!-- COMMENT #3 -->
<UNMAPPED_ELEMENT_4/>
<phone-number type="home">555-HOME</phone-number>
<!-- COMMENT #4 -->
<phone-number type="cell">555-CELL</phone-number>
<phone-number type="work">555-WORK</phone-number>
<UNMAPPED_ELEMENT_5/>
<!-- COMMENT #5 -->
</customer>