JAXB还是很好用的 。下面是用它来实现对象bean和XML的相互转换。
首先新建二个bean：Student和Classroom。
package com.mucfc.java.application.testPaser;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class Student {
private int id;
private String name;
private int age;
private Classroom classroom;
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 Classroom getClassroom() {
return classroom;
}
public void setClassroom(Classroom classroom) {
this.classroom = classroom;
}
public Student(int id, String name, int age, Classroom classroom) {
super();
this.id = id;
this.name = name;
this.age = age;
this.classroom = classroom;
}
//无参够着函数一定需要，否则JXBContext无法正常解析。
public Student() {
super();
}
}
package com.mucfc.java.application.testPaser;
public class Classroom {
private int id;
private String name;
private int grade;
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 getGrade() {
return grade;
}
public void setGrade(int grade) {
this.grade = grade;
}
public Classroom(int id, String name, int grade) {
super();
this.id = id;
this.name = name;
this.grade = grade;
}
public Classroom() {
super();
}
}
然后写main实现类：
package com.mucfc.java.application.testPaser;
import java.io.StringReader;
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 com.mucfc.java.application.model.Channel;
import com.mucfc.java.application.model.Channels;
import com.mucfc.java.application.model.FilterInfo;
import com.mucfc.java.application.testPaserFilter.EnvFilter;
public class testPaser {
public void beanToXML() {
Classroom classroom = new Classroom(1, "软件工程", 4);
Student student = new Student(101, "张三", 22, classroom);
try {
JAXBContext context = JAXBContext.newInstance(Student.class);
Marshaller marshaller = context.createMarshaller();
marshaller.marshal(student, System.out);
} catch (JAXBException e) {
e.printStackTrace();
}
}
public void XMLStringToBean(){
String xmlStr = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><student><age>22</age><classroom><grade>4</grade><id>1</id><name>软件工程</name></classroom><id>101</id><name>张三</name></student>";
try {
JAXBContext context = JAXBContext.newInstance(Student.class);
Unmarshaller unmarshaller = context.createUnmarshaller();
Student student = (Student)unmarshaller.unmarshal(new StringReader(xmlStr));
System.out.println(student.getAge());
System.out.println(student.getClassroom().getName());
} catch (JAXBException e) {
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
new testPaser().XMLStringToBean();
}
}