JAXB与XML

jaxb能够很好的读写xml，主要用于java对象和xml文件的互转，以下是一个java对象转成xml文件的例子

 例子为最简单的使用 留作以后参考

实体类classrom
package xml.jaxb.entity;

import java.util.List;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class Classrom {
private String grade;
private String name;
private List<student> Student;
public String getGrade() {
return grade;
}
public void setGrade(String grade) {
this.grade = grade;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<student> getStudent() {
return Student;
}
public void setStudent(List<student> student) {
Student = student;
}
public Classrom(String grade, String name, List<student> student) {
super();
this.grade = grade;
this.name = name;
Student = student;
}
public Classrom() {
super();
}
@Override
public String toString() {
return "Classrom [grade=" + grade + ", name=" + name + ", Student="
+ Student + "]";
}

}

实体类student

package xml.jaxb.entity;public class student {private int id;private String name;private int age;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 int getAge() {return age;}public void setAge(int age) {this.age = age;}public student(int id, String name, int age) {super();this.id = id;this.name = name;this.age = age;}public student() {super();}@Overridepublic String toString() {return "student [id=" + id + ", name=" + name + ", age=" + age + "]";}}

测试 

package xml.jaxb;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.util.ArrayList;import java.util.List;import javax.xml.bind.JAXBContext;import javax.xml.bind.JAXBException;import javax.xml.bind.Marshaller;import javax.xml.bind.Unmarshaller;import org.junit.Test;import xml.jaxb.entity.Classrom;import xml.jaxb.entity.student;public class JaxbTest {/** * java对象转换为xml文件 */@SuppressWarnings({ "rawtypes", "unchecked" })@Testpublic void testJabx(){try {JAXBContext jaxbContext=JAXBContext.newInstance(Classrom.class);Marshaller marshaller=jaxbContext.createMarshaller();List list=new ArrayList<student>();list.add(new student(1,"ty",20));list.add(new student(1,"ty1",22));list.add(new student(1,"ty2",24));Classrom classrom=new Classrom("2010", "tttyyy", list);marshaller.marshal(classrom , new FileOutputStream(new File("d:/c1.xml")));} catch (JAXBException e) {e.printStackTrace();} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}}/** * 由xml转换为java对象 */@Testpublic void testJabx01(){try {JAXBContext jaxbContext=JAXBContext.newInstance(Classrom.class);Unmarshaller unmarshaller=jaxbContext.createUnmarshaller();Classrom classrom=(Classrom) unmarshaller.unmarshal(new File("d:/c1.xml"));System.out.println(classrom);} catch (JAXBException e) {e.printStackTrace();}}}