java - XML 反序列化 java XSTream 问题

Question

这是 XML

<?xml version="1.0" encoding="UTF-8"?>
<person>  
  <fullname>Guilherme</fullname>
  <age>10</age>
  <address>address,address,address,address,</address>
</person>

<person>  
  <fullname>Guilherme</fullname>
  <age>10</age>
  <address>address,address,address,address,</address>
</person>  

这是 POJO，

public class Person {

    private String name;
    private int age;
    private String address;

    public Person(String name) {
        this.name = name;
    }

    public Person(String name, int age, String address) {
        this.name = name;
        this.age = age;
        this.address = address;
    }

    public Person() {
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public int getAge() {
        return age;
    }

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

    public String getName() {
        return name;
    }

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

这是解码器逻辑:

@Override
    public Object unmarshal(HierarchicalStreamReader reader,
            UnmarshallingContext context) {
        List<Person> persons = new ArrayList<Person>();
        while (reader.hasMoreChildren()) {

            Person person = new Person();
            reader.moveDown();
            System.out.println("+" + reader.getValue());
            person.setName(reader.getValue());
            reader.moveUp();
            reader.moveDown();
            System.out.println("+" + reader.getValue());
            person.setAge(Integer.parseInt(reader.getValue()));
            reader.moveUp();
            reader.moveDown();
            System.out.println("+" + reader.getValue());
            person.setAddress(reader.getValue());
            reader.moveUp();
            persons.add(person);
        }
        return persons;
    }  

我遇到以下异常:

[Fatal Error] :8:2: The markup in the document following the root element must be well-formed.
Exception in thread "main" com.thoughtworks.xstream.io.StreamException:  : The markup in the document following the root element must be well-formed.
        at com.thoughtworks.xstream.io.xml.DomDriver.createReader(DomDriver.java:86)
        at com.thoughtworks.xstream.io.xml.DomDriver.createReader(DomDriver.java:70)
        at com.thoughtworks.xstream.XStream.fromXML(XStream.java:861)
        at com.mycompany.xstreamconvertersample.App.main(App.java:34)
Caused by: org.xml.sax.SAXParseException: The markup in the document following the root element must be well-formed.
        at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:239)
        at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:283)
        at com.thoughtworks.xstream.io.xml.DomDriver.createReader(DomDriver.java:79)
        ... 3 more
------------------------------------------------------------------------
[ERROR]BUILD ERROR

Answer 1

XML 文件格式不正确。在您的情况下，它不能有两个单独的根元素 <person> 。必须有一个顶级元素，例如 <persons> ，围绕两个人元素。

编辑:为了格式良好，它需要看起来像这样

<persons>
  <person>
    .
    .
  </person>
  <person>
    .
    .
  </person>
<persons>