需要帮助格式化JAXB输出 [英] Need help in formatting JAXB output

问题描述

我有一些对象让我们说两个，A和B.这些对象来自同一个类。我需要使用JAXB封送这些对象，输出XML应采用以下形式：

I have some objects let's say two, A and B. These objects from the same class. I need to marshal these objects using JAXB and the output XML should be in this form:

<Root>
    <A>
        <ID> an id </ID>
    </A>
    <B>
        <ID> an id </ID>
    </B>
</Root>

<!-- Then all A and B attributes must be listed !-->
<A>
    <ID> an id </ID>
    <attribute1> value </attribute1>
    <attribute2> value </attribute2>
</A>
<B>
    <ID> an id </ID>
    <attribute1> value </attribute1>
    <attribute2> value </attribute2>
</B>

如何在JAXB中生成此格式？任何帮助都表示赞赏。

How to generate this format in JAXB? Any help is appreciated.

更新：
更具体地说，假设我们有这样的Human类：

Update: To be more specific, Assume we have Human class like this:

@XmlRootElement
public class Human {
    private String name;
    private int age;
    private Integer nationalID;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public Integer getNationalID() {
        return nationalID;
    }

    public void setNationalID(Integer nationalID) {
        this.nationalID = nationalID;
    }
}

我们的主要课程是：

public class Main3 {

    public static void main(String[] args) throws JAXBException {
        Human human1 = new Human();
        human1.setName("John");
        human1.setAge(24);
        human1.setNationalID(Integer.valueOf(123456789));

        JAXBContext context = JAXBContext.newInstance(Human.class);
        Marshaller m = context.createMarshaller();
        m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);

        StringWriter stringWriter = new StringWriter();

        m.marshal(human1, stringWriter);

        System.out.println(stringWriter.toString());
    }

}

然后输出将是：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<human>
    <age>24</age>
    <name>John</name>
    <nationalID>123456789</nationalID>
</human>

现在我需要输出如下：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<human>
    <nationalID>123456789</nationalID>
</human>
<human>
    <nationalID>123456789</nationalID>
    <age>24</age>
    <name>John</name>
</human>

这将帮助我绘制一个没有属性的XML对象树（仅限ID）然后但树下的所有定义。这可以使用JAXB或任何其他实现吗？

And this will help me draw a tree of XML objects without the attributes (only by ID) and then but all the definitions below the tree. Is this possible using JAXB or any other implementation?

推荐答案

试试这个：

import java.io.StringWriter;
import javax.xml.bind.Marshaller;

...

Object requestObject = ...  // This is the object that needs to be printed with indentation
Marshaller marshaller = ...
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
StringWriter stringWriter = new StringWriter();
marshaller.marshal(requestObject, stringWriter);

System.out.println(stringWriter.toString());

这篇关于需要帮助格式化JAXB输出的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！