javax.xml.bind.UnmarshalException: 意外元素 (uri:"", local:"COUNTRY") 预期元素为 <{http://www.w3schools.com}COUNTRY>

javax.xml.bind.UnmarshalException: unexpected element (uri:"", local:"COUNTRY") Expected elements are <{http://www.w3schools.com}COUNTRY>

提问by user2523808

Xml content is

XML 内容是

<?xml version="1.0" encoding="UTF-8"?>
<COUNTRY xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.w3schools.com Country_Details.xsd">

    <STATE name="AndhraPradesh">
        <DISTRICT name="Chittoor">
            <PHONENO>255258</PHONENO>
            <ADDRESS>bazarr Street</ADDRESS>
        </DISTRICT>
        <DISTRICT name="Kadapa">
            <PHONENO>24137457</PHONENO>
            <ADDRESS>congtres Street</ADDRESS>
        </DISTRICT>
    </STATE>
    <STATE>
        ...
    </STATE>
</COUNTRY>

This is my country class Country.java

这是我的国家课程 Country.java

@XmlAccessorType(XmlAccessType.FIELD)

@XmlType(name = " ", propOrder = { "state" })

@XmlRootElement(name = "COUNTRY")

public class COUNTRY {

    @XmlElement(name = "STATE", required = true)
protected List<Districts> state;

    public List<Districts> getSTATE() {
        if (state == null) {
            state = new ArrayList<Districts>();
        }
        return this.state;
    }
}

Package Info:

包装信息：

@javax.xml.bind.annotation.XmlSchema(namespace = "http://www.w3schools.com",
elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
package com.kk;

Main class

主班

public class App {

public static void main(String[] args) throws JAXBException {

    JAXBContext context = JAXBContext.newInstance(AddressDetails.class,
        COUNTRY.class, Details.class, Districts.class, ObjectFactory.class);
    Unmarshaller um = context.createUnmarshaller();
    JAXBElement<COUNTRY> jaxb = (JAXBElement<COUNTRY>) um
        .unmarshal(new File("src//Country.xml"));
    COUNTRY value = jaxb.getValue();
    System.out.println(value);
}     

I got error like this:

我得到这样的错误：

Exception in thread "main"
javax.xml.bind.UnmarshalException:unexpected element(uri:"", local:"COUNTRY"). 
Expected elements are <{http://www.w3schools.com}COUNTRY>
    at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleEvent
        (UnmarshallingContext.java:642)
    at com.sun.xml.bind.v2.runtime.unmarshaller.Loader.reportError(Loader.java:254)
    at com.sun.xml.bind.v2.runtime.unmarshaller.Loader.reportError(Loader.java:249)
    at com.sun.xml.bind.v2.runtime.unmarshaller.Loader.reportUnexpectedChildElement
(Loader.java:116)
    at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext$DefaultRootLoader.childElement(UnmarshallingContext.java:1049)
    at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext._startElement(UnmarshallingContext.java:478)
    at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.startElement(UnmarshallingContext.java:459)
    at com.sun.xml.bind.v2.runtime.unmarshaller.SAXConnector.startElement(SAXConnector.java:148)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)

    at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(Unknown Source)
    at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(Unknown Source)
    at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(Unknown Source)
    at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(Unknown Source)
    at App.main(App.java:20)

dont know where the fault is, I tried a lot, but I am unable to figure it out..

不知道是哪里出了问题，试了很多次，还是没弄明白。。

回答by bdoughan

Based on your mappings the JAXB impl expects the XML document to be namespace qualified. You can fix it in one of the following ways:

根据您的映射，JAXB impl 期望 XML 文档是命名空间限定的。您可以通过以下方式之一修复它：

1. Add the namespace qualification to the XML document.

    <COUNTRY xmlns="http://www.w3dchools.com">
   

2. Remove the namespace metadata from the JAXB mappings. You have specified it using the package level @XmlSchemaannotation.

   • http://blog.bdoughan.com/2010/08/jaxb-namespaces.html

3. Use an XmlFilterto apply the correct namespace information to your current XML document.

   • JAXB unmarshal with declared type does not populate the resulting object with data

1. 将命名空间限定添加到 XML 文档。

    <COUNTRY xmlns="http://www.w3dchools.com">
   

2. 从 JAXB 映射中删除名称空间元数据。您已使用包级别@XmlSchema注释指定它。

   • http://blog.bdoughan.com/2010/08/jaxb-namespaces.html

3. 使用XmlFilter将正确的名称空间信息应用到您当前的 XML 文档。

   • 具有声明类型的 JAXB 解组不会用数据填充结果对象