Question

我正在尝试根据定义的模式将对象中的数据编组到xml文件中。但是，当我打印出xml文件时，我在xml标签上收到了额外的注释。有没有办法摆脱额外的命名空间注释（即ns2）

这是我从编组中收到的xml示例。

<?xml version="1.0" encoding="UTF-8" standalone="yes">
<root xmlns:ns2="http://www.something.com/something">
    <ns2:food>steak</ns2:food>
    <ns2:beverage>water</ns2:beverage>
</root>

我想要的是这样的：

<?xml version="1.0" encoding="UTF-8" standalone="yes">
<root xmlns="http://www.something.com/something">
    <food>steak</food>
    <beverage>water</beverage>
</root>

这是我的Java代码正在做的事情：

            JAXBContext context = JAXBContext.newInstance("com.schema");
            JAXBElement<FoodSchema> element = new JAXBElement<FoodSchema>
                (new QName("FoodSchema"), Food.class, foodSchema);
            Marshaller marshaller = context.createMarshaller();
            OutputStream os = new FileOutputStream(object.getFilePath());
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); 
            marshaller.marshal(element, os);

非常感谢任何帮助！谢谢！

Answer 1

通过向用于构造JAXB元素的QName添加名称空间URI（“http://www.something.com/something”），并利用包级别@XmlSchema注释将获得您正在寻找的命名空间限定：

<强>包信息

@XmlSchema(
    namespace="http://www.something.com/something", 
    elementFormDefault=XmlNsForm.QUALIFIED)
package forum7014746;

import javax.xml.bind.annotation.*;

<强>食品

package forum7014746;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class Food {

    private String food;
    private String beverage;

    public String getFood() {
        return food;
    }

    public void setFood(String food) {
        this.food = food;
    }

    public String getBeverage() {
        return beverage;
    }

    public void setBeverage(String beverage) {
        this.beverage = beverage;
    }

}

<强>演示

package forum7014746;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.Marshaller;
import javax.xml.namespace.QName;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jaxbContext = JAXBContext.newInstance(Food.class);

        Food foodSchema = new Food();
        foodSchema.setFood("steak");
        foodSchema.setBeverage("water");

        JAXBElement<Food> element = new JAXBElement<Food> (new QName("http://www.something.com/something","FoodSchema"), Food.class, foodSchema);

        Marshaller marshaller = jaxbContext.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(element, System.out);
    }

}

<强>输出

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<FoodSchema xmlns="http://www.something.com/something">
    <beverage>water</beverage>
    <food>steak</food>
</FoodSchema>

Answer 2

添加到xsd架构定义 elementFormDefault 和 attributeFormDefault ：

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" ...
elementFormDefault="qualified" attributeFormDefault="unqualified" ... >

Answer 3

谢谢你的回答。只是给出示例代码之前：

 marshaller.marshal(new  JAXBElement(new QName(**""**,"Document"),Document.class,swiftDoc), sw);

之后：

marshaller.marshal(new  JAXBElement(new QName(**"http://www.w3.org/2001/XMLSchema**","Document"),Document.class,swiftDoc), sw);

并删除了额外的“ns：”。

Java：编组对象 - 在xml中删除额外的ns2注释

3 个答案: