利用 JavaBean 读取xml文件代码,Java代码库,德仔网

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【Java】利用 JavaBean 读取xml文件
作者:咏衡 / 发布于2016/12/21/ 857
<pre name="code" class="java">package demo20130531;  
  
import javax.xml.bind.annotation.XmlRootElement;  
@XmlRootElement  
public class Article {  
  
    private String title;  
  
    private String author;  
  
    private String email;  
  
    private String date;  
  
    private Authors authors;  
      
    public String getTitle() {  
        return title;  
    }  
  
    public void setTitle(String title) {  
        this.title = title;  
    }  
  
    public String getAuthor() {  
        return author;  
    }  
  
    public void setAuthor(String author) {  
        this.author = author;  
    }  
  
    public String getEmail() {  
        return email;  
    }  
  
    public void setEmail(String email) {  
        this.email = email;  
    }  
  
    public String getDate() {  
        return date;  
    }  
  
    public void setDate(String date) {  
        this.date = date;  
    }  
  
    public Authors getAuthors() {  
        return authors;  
    }  
  
    public void setAuthors(Authors authors) {  
        this.authors = authors;  
    }  
  
  
}  
</pre>  
<?xml version="1.0" encoding="UTF-8"?><articles><article><title>hello</title><author>ctl</author><email>ctl_cn@163.com</email><date>1991-06-29</date><authors><age>22</age><sex>M</sex><address>河南</address></authors></article></articles>  
<pre></pre>  
<pre name="code" class="java">package demo20130531;  
  
public class Authors {  
    private int age;  
    private String sex;//不可以是char类型  
    private String address;  
    public int getAge() {  
        return age;  
    }  
  
    public void setAge(int age) {  
        this.age = age;  
    }  
  
    public String getSex() {  
        return sex;  
    }  
  
    public void setSex(String sex) {  
        this.sex = sex;  
    }  
  
    public String getAddress() {  
        return address;  
    }  
  
    public void setAddress(String address) {  
        this.address = address;  
    }  
  
    public String toString() {  
        return "age:" + age +  
                "  sex:" + sex +  
                " address:" + address;  
    }  
}  
</pre>  
<pre name="code" class="java">package demo20130531;  
  
import java.io.File;  
import java.io.IOException;  
import java.util.ArrayList;  
import java.util.Iterator;  
import java.util.List;  
  
import javax.xml.bind.JAXBContext;  
import javax.xml.bind.JAXBException;  
import javax.xml.bind.Unmarshaller;  
import javax.xml.bind.annotation.XmlRootElement;  
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;  
  
//根元素的标签名为articles  
@XmlRootElement(name = "articles")  
public class ArticleData {  
  
    //articles元素下有多个article元素  
    List<Article> article = new ArrayList<Article>();  
  
    public List<Article> getArticle() {  
        return article;  
    }  
  
    public void setArticle(List<Article> article) {  
        this.article = article;  
    }  
  
    public static void main(String[] args) throws IOException {  
  
        // 创建xml文档对象，其保存在E盘的根目录下的article.xml文件  
        File xmlFile = new File("src2/demo20130531/article.xml");  
//      System.out.println(xmlFile.getAbsolutePath());  
//      System.out.println(xmlFile.getParent());  
        if(!xmlFile.exists())  
            xmlFile.createNewFile();  
        // 声明JAXBContext上下文对象  
        JAXBContext context;  
        try {  
            // 通过指定映射的类创建上下文  
            context = JAXBContext.newInstance(ArticleData.class);  
            // 通过上下文创建xml转化java的对象Unmarshaller  
            Unmarshaller u = context.createUnmarshaller();  
            // 将xml数据转换成java对象  
            ArticleData data = (ArticleData) u.unmarshal(xmlFile);  
            // 获得所有的article数据  
            List<Article> articles = data.getArticle();  
            for (Article a : articles) {  
                System.out.println("-------------------------");  
                System.out.println(a.getAuthor());  
                System.out.println(a.getDate());  
                System.out.println(a.getEmail());  
                System.out.println(a.getTitle());  
                System.out.println(a.getAuthors().getAddress()+"  "+a.getAuthors().getAge()+" "+a.getAuthors().getSex());  
                System.out.println(a.getAuthors());  
            }  
        } catch (JAXBException e) {  
            e.printStackTrace();  
        }  
    }  
}  
</pre>
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