XML digester的详细讲解-优快云博客

本文介绍了一种使用Java Digester库解析特定格式XML文件的方法。通过创建学校、教师和学生类，实现从XML中读取并构建复杂对象结构的过程。示例展示了如何设置Digester规则以匹配XML元素，并实例化相应的Java对象。

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	/**
	 *
	 * @param args
	 *
	 * @author William
	 * @throws SAXException 
	 * @throws IOException 
	 * @date Aug 8, 2013
	 */
	public static void main(String[] args) throws IOException, SAXException {
	
		
		Digester digester = new Digester();
			digester.setNamespaceAware(false);
			digester.setValidating(false);
			digester.addObjectCreate("school", com.test.School.class);
			digester.addSetProperties("school");
			digester.addObjectCreate("school/teacher", com.test.Teacher.class);
			digester.addSetProperties("school/teacher");
			digester.addSetNext("school/teacher", "addTeacher");
			digester.addObjectCreate("school/teacher/students/student", com.test.Student.class);
			digester.addSetProperties("school/teacher/students/student");
			digester.addSetNestedProperties("school/teacher/students/student");
			digester.addSetNext("school/teacher/students/student/", "addStudent");
		School s = (School) digester.parse(new File("D:\\Indigo\\SFA workspace\\Test\\src\\com\\test\\NewFile.xml"));
		//System.out.println(s);
		System.out.println(s.teachers.size());
		
		for(int i=0;i<s.teachers.size();i++){
			Teacher st=s.getTeachers().get(i);	
			for(int j=0;j<st.students.size();j++){
				Student std=st.students.get(j);
				System.out.println(st.getName()+","+std.getAge()+","+std.getHobby()+","+std.getId());
			}
			//System.out.println(st.students.size());
		}
		
		
		
		//  /*通过author找title
//		   * @String author
//		   */
//		  public void  getTitle(String author)
//		  {
//		   Book b=null;
//		   for(int i=0;i<books.size();i++)
//		   {
//		    b=(Book)books.elementAt(i);
//		    if(b.getAuthor().equals(author))
//		    {
//		     System.out.println(b.getTitle());
//		    }
//		    
//		   }
//		  }
//		  
//		  /*通过Magazine Name,page找headline
//		   * @String MagaName,String page
//		   */
//		  public void getheadline(String MagaName,String page)
//		  {
//		   Magazine m=null;
//		   for (int i=0;i<magazines.size();i++)
//		   {
//		    
//		    m=(Magazine)magazines.elementAt(i);
//		    if(MagaName.equals(m.getName()))
//		      m.getHeadline(page);
//		    
//		   }
//		  }

		
	}

}

<?xml version="1.0" encoding="UTF-8"?>
<school name="school number1" location="SZ">
	<teacher id="001" name="zhangshan">
		<students>
			<student name="stu1">
				<hobby>basketball</hobby>
				<id>111</id>
				<age>23</age>
			</student>
			<student name="stu2">
				<hobby>football</hobby>
				<id>222</id>
				<age>24</age>
			</student>
			<student name="ggg">
				<hobby>gggg</hobby>
				<id>333</id>
				<age>21</age>
			</student>
		</students>
	</teacher>
	<teacher id="002" name="lisi">
		<students>
			<student name="_stu1">
				<hobby>tennis</hobby>
				<id>dddddddddddddddddd</id>
				<age>25</age>
			</student>
			<student name="_stu2">
				<hobby>badminton</hobby>
				<id>555</id>
				<age>26</age>
			</student>
		</students>
	</teacher>
</school>

/**
 *
 *
 * @author William
 * @date Aug 8, 2013
 * @version 1.0
 */
public class School {
	public List<Teacher> getTeachers() {
		return teachers;
	}
	public void setTeachers(List<Teacher> teachers) {
		this.teachers = teachers;
	}
	public String name;
	public String location;
	List<Teacher> teachers=new ArrayList<Teacher>();
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getLocation() {
		return location;
	}
	public void setLocation(String location) {
		this.location = location;
	}
	public void addTeacher(Teacher t){
		teachers.add(t);
	}
//	@Override
//	public String toString() {
//		String s="School [name=" + name + ", location=" + location + "]";
//		s+="\nhave "+teachers.size()+" teachers\n";
//		for(Teacher t:teachers){
//			s+=t.toString();
//			s+="\n\t";
//			for(Student ss:t.students){
//				s+=ss;
//				s+="\n\t";
//			}
//			s+="\n";
//		}
//		return s;
//	}
}

/**
 *
 *
 * @author William
 * @date Aug 8, 2013
 * @version 1.0
 */
public class Student {
	private String id;
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	private String name;
	private String hobby;
	private int age;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getHobby() {
		return hobby;
	}
	public void setHobby(String hobby) {
		this.hobby = hobby;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	@Override
	public String toString() {
		return "Student [name=" + name + ", hobby=" + hobby + ", age=" + age
				+ "]";
	}

}

/**
 *
 *
 * @author William
 * @date Aug 8, 2013
 * @version 1.0
 */
public class Teacher {
	private int id;
	private String name;
	public List<Student> students=new ArrayList<Student>();
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public void addStudent(Student s){
		students.add(s);
	}
	@Override
	public String toString() {
		return "Teacher [id=" + id + ", name=" + name + "]";
	}
}

commons-digester-1.6.jar

commons-collections-3.1.jar

commons-logging-1.0.4.jar

commons-beanutils-1.7.0.jar

http://blog.youkuaiyun.com/possibleonline/article/details/6956133

http://www.codesky.net/article/200502/54795.html