利用 JavaBean 读取xml文件 (一)

[html]

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; 
     } 
  
  
 } 
 

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; 
     } 
 } 
 

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 = new ArrayList
(); 
  
     public List
 getArticle() { 
         return article; 
     } 
  
     public void setArticle(List
 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
 articles = data.getArticle(); 
             for (Article a : articles) { 
                 System.out.println("-------------------------"); 
                 System.out.println(a.getAuthor