使用JAXB在JAVA中将CSV文件转换为层次结构XML

我需要使用CSV文件创建分层XML

id,firstname,Lastname
1,yong,mook kim
2, Alez, Aunritod
,...

我尝试用JAXB来实现这一点，并手动创建类

public class WriteXMLFile {

    public static void main(String argv[]) {

      try {

        DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder docBuilder = docFactory.newDocumentBuilder();

        // root elements
        Document doc = docBuilder.newDocument();
        Element rootElement = doc.createElement("company");
        doc.appendChild(rootElement);

        // staff elements
        Element staff = doc.createElement("Staff");
        rootElement.appendChild(staff);

        // set attribute to staff element
        Attr attr = doc.createAttribute("id");
        attr.setValue("1");
        staff.setAttributeNode(attr);

        Element firstname = doc.createElement("firstname");
        firstname.appendChild(doc.createTextNode("yong"));
        staff.appendChild(firstname);

        // lastname elements
        Element lastname = doc.createElement("lastname");
        lastname.appendChild(doc.createTextNode("mook kim"));
        staff.appendChild(lastname);

但我的问题是，我希望从csv文件中读取每个节点的值，而不是在代码中手动读取

        Element firstname = doc.createElement("firstname");
        firstname.appendChild(doc.createTextNode("yong"));
        staff.appendChild(firstname);

---

有人能帮我从sample.csv文件中读取而不是手动读取吗？

尝试以下解决方案

首先读取csv文件并从各行收集对象（个人）。然后将对象列表封送到xml文件

java（xml文件的根元素）

用java进行封送处理

public class Marshaller {

    public static void main(String[] args) {

        BufferedReader br;
        String line;
        People people = new People();
        ArrayList<Person> list = new ArrayList();

        //read the csv file and collect the person objects
        try {
            br = new BufferedReader(new FileReader("inputCSV.csv"));
            while ((line = br.readLine()) != null) {    //get every single line individually in csv file
                String[] value = line.split(",");   //collect the comma separated values into array
                Person person = new Person();
                person.setId(value[0]); //first element of an array is id
                person.setFirstName(value[1]);  //second element of an array is firstName
                person.setLastName(value[2]);   //third element of an array is lastName
                list.add(person);   //add person object into the list
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        people.setListPerson(list); //set person object list to people
        people.getListPerson().remove(0);   //remove the first person object of list. because it holds the column's names

        //marshaling with java
        try {

            JAXBContext jaxbContext = JAXBContext.newInstance(People.class);
            javax.xml.bind.Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
            jaxbMarshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, true);
            jaxbMarshaller.marshal(people, new File("output.xml"));
            jaxbMarshaller.marshal(people, System.out);

        } catch (JAXBException e) {
            e.printStackTrace();
        }

    }
}

output.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<people>
    <person>
        <id>1</id>
        <firstName>yong</firstName>
        <lastName>mook kim</lastName>
    </person>
    <person>
        <id>2</id>
        <firstName> Alez</firstName>
        <lastName> Aunritod</lastName>
    </person>
</people>

1.
勇
木金
2.
阿莱兹
阿努里托德

你可以看到，我看到了上面提到的链接，我试过了，但没有给我结果。上面提到的链接是关于漂亮的打印，但我的问题不是漂亮的打印！如果我有一个其他类，名为PersonDetail的insidePerson，这个类还有其他三个元素，我该怎么做呢？你能帮我一下吗？如果你想添加

标签作为

标签的子标签，并且在

标签下面包括三个以上的元素（

id

，

firstName

，

lastName

）。就像那样，

2阿莱兹·阿努里托德

public class Marshaller {

    public static void main(String[] args) {

        BufferedReader br;
        String line;
        People people = new People();
        ArrayList<Person> list = new ArrayList();

        //read the csv file and collect the person objects
        try {
            br = new BufferedReader(new FileReader("inputCSV.csv"));
            while ((line = br.readLine()) != null) {    //get every single line individually in csv file
                String[] value = line.split(",");   //collect the comma separated values into array
                Person person = new Person();
                person.setId(value[0]); //first element of an array is id
                person.setFirstName(value[1]);  //second element of an array is firstName
                person.setLastName(value[2]);   //third element of an array is lastName
                list.add(person);   //add person object into the list
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        people.setListPerson(list); //set person object list to people
        people.getListPerson().remove(0);   //remove the first person object of list. because it holds the column's names

        //marshaling with java
        try {

            JAXBContext jaxbContext = JAXBContext.newInstance(People.class);
            javax.xml.bind.Marshaller jaxbMarshaller = jaxbContext.createMarshaller();
            jaxbMarshaller.setProperty(javax.xml.bind.Marshaller.JAXB_FORMATTED_OUTPUT, true);
            jaxbMarshaller.marshal(people, new File("output.xml"));
            jaxbMarshaller.marshal(people, System.out);

        } catch (JAXBException e) {
            e.printStackTrace();
        }

    }
}

id,firstname,Lastname
1,yong,mook kim
2, Alez, Aunritod

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<people>
    <person>
        <id>1</id>
        <firstName>yong</firstName>
        <lastName>mook kim</lastName>
    </person>
    <person>
        <id>2</id>
        <firstName> Alez</firstName>
        <lastName> Aunritod</lastName>
    </person>
</people>