java生成XML文件

時間 2019-11-17

標籤 java 生成 xml 文件欄目 Java 简体版

原文原文鏈接

java生成XML文件java

經過java生成XML文件，在不少場合都會用到。好比：作android應用的時候，有不少數據，都是經過服務端生成的XML文件，再解析XML文件裏的數據。android

下面是經過JAVA生成XML文件的代碼：數組

import java.util.ArrayList;
import java.util.List;

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.XMLOutputter;



/**
* 生成XML文件
***/
public class XmlUtils {


    /**
     * 根據List列表封裝成XML數據
     * @return 返回封裝後的數據
     */
    public static String getXmlFromList(List<User> beanList) {
        String result = "";
        Element root = new Element("user-list");
        Document doc = new Document(root);

        for (User user : beanList) {
            Element element = new Element("user");

            element.addContent(new Element("userId").setText(String.valueOf(user.getUserId())));
            element.addContent(new Element("userName").setText(user.getUserName()));
            element.addContent(new Element("email").setText(user.getEmail()));

            root.addContent(element);
        }

        XMLOutputter XMLOut = new XMLOutputter();

        try {
            /**
             * 輸出XML數據
             */
            result = XMLOut.outputString(doc);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }


    public static void main(String[] args) {
        User u1 = new User(1,"張三","");
        User u2 = new User(2,"李四","");
        User u3 = new User(3,"王五","");

        List<User> userList = new ArrayList<User>();
        userList.add(u1);
        userList.add(u2);
        userList.add(u3);

        /**
         * 根據List數組，生成XML數據
         */
        String resultXml = getXmlFromList(userList);

        /**
         * 打印生成的XML數據
         */
        System.out.println(resultXml);

    }

} dom

POJO類：this

public class User {
    private int userId;
    private String userName;
    private String email;

    public User(int userId, String userName, String email) {
        super();
        this.userId = userId;
        this.userName = userName;
        this.email = email;
    }

    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public int getUserId() {
        return userId;
    }
    public void setUserId(int userId) {
        this.userId = userId;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
} xml

生成後的XML文件以下：
<?xml version="1.0" encoding="UTF-8"?>
<user-list>
    <user>
        <userId>1</userId>
        <userName>張三</userName>
        <email>user1@xxx.com</email>
    </user>
    <user>
        <userId>2</userId>
        <userName>李四</userName>
        <email>user2@xxx.com</email>
    </user>
    <user>
        <userId>3</userId>
        <userName>王五</userName>
        <email>user3@xxx.com</email>
    </user>
</user-list> element