使用jaxb 转换bo对象及XML文件流

bo对象：

注：

jaxb只会序列化 public 的方法 ，若属性声明为public，且声明 @XmlElement(name = "name") ，则需要在该属性get方法上声明@XmlTransient，表示不将get方法序列化成xml元素，否则会报重复属性序列化。或者将属性改为private ，将@XmlElement(name = "name")放置在get方法上。

其二：若寻在 属性中有 Date类型，需要继承XmlAdapter<String, Date>类，并重载2个方法后，在bo对象处使用@XmlJavaTypeAdapter(JaxbDateSerializer.class) 进行序列化。

package com.test;import java.util.Date;import java.util.List;import javax.xml.bind.annotation.XmlElement;import javax.xml.bind.annotation.XmlRootElement;import javax.xml.bind.annotation.XmlTransient;import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;@XmlRootElement(name = "person")public class Person {@XmlElement(name = "name")private String name ;@XmlElement(name = "age")private String age;@XmlElement(name = "child")private List<Child> children;private Date d;@XmlElement(name = "time")@XmlJavaTypeAdapter(JaxbDateSerializer.class) public Date getD() {return d;}public void setD(Date d) {this.d = d;}@XmlTransientpublic List<Child> getChildren() {return children;}public void setChildren(List<Child> children) {this.children = children;}@XmlTransientpublic String getName() {return name;}public void setName(String name) {this.name = name;}@XmlTransientpublic String getAge() {return age;}public void setAge(String age) {this.age = age;}}

package com.test;import java.text.SimpleDateFormat;import java.util.Date;import javax.xml.bind.annotation.adapters.XmlAdapter;public class JaxbDateSerializer extends XmlAdapter<String, Date>{    private SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");    @Override     public String marshal(Date date) throws Exception {         return dateFormat.format(date);     }    @Override     public Date unmarshal(String date) throws Exception {         return dateFormat.parse(date);     } }

main：

package com.test;import java.io.StringWriter;import java.net.URL;import java.util.Date;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;public class Test {public static void main(String[] args) throws JAXBException{//java 类 转 xml 文件List<Child> l = new ArrayList<Child>();Person p = new Person();p.setAge("123");p.setName("zhoushun");p.setD(new Date());for(int i=0;i<5;i++){Child c = new Child();c.setSex(i+"");l.add(c);}p.setChildren(l);StringWriter writer = new StringWriter();JAXBContext context = JAXBContext.newInstance(Person.class,Child.class);Marshaller m = context.createMarshaller();m.marshal(p, writer);String xml = writer.toString();System.out.println(xml);//xml文件转java类 JAXBContext context2 = JAXBContext.newInstance(Person.class);        Unmarshaller unmarshaller = context2.createUnmarshaller();        //class目录 jaxb/bin        //URL xmlFileUrl = ClassLoader.getSystemResource("");        URL xmlFileUrl = ClassLoader.getSystemResource("person.xml");        System.out.println(xmlFileUrl.getPath());        Person p2 = (Person) unmarshaller.unmarshal(xmlFileUrl);        System.out.println(p2.getName());        System.out.println(p2.getChildren().get(4).getSex());}}

xml文件：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><person><name>zhoushun123</name><age>123</age><child><sex>0</sex></child><child><sex>1</sex></child><child><sex>2</sex></child><child><sex>3</sex></child><child><sex>4</sex></child><d>2012-06-01</d></person><person><name>zhoushun125</name><age>123</age><child><sex>0</sex></child><child><sex>1</sex></child><child><sex>2</sex></child><child><sex>3</sex></child><child><sex>4</sex></child><d>2012-06-01</d></person>