JAXB学习笔记(五)
上个例子中生成的xml
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?><persion> <userid name="userid">112</userid> <username name="username">就不告诉你</username> <birthday name="birthday">2011-09-28</birthday></persion>
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?人说这都"什嘛",可能我们真正需要的是这样子的，即节点名字叫"field"
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?><persion> <field name="userid">112</userid> <field name="username">就不告诉你</username> <field name="birthday">2011-09-28</birthday></persion>?
OK,有需求咱们就要解决，当然处理这个之前我们先要知道集合的序列化，因为明显我们看出field节点是一组数组集合。上代码
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package cn.uyunsky.blog.xml.demo5;import java.io.StringReader;import java.io.StringWriter;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;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 javax.xml.bind.annotation.XmlAccessType;import javax.xml.bind.annotation.XmlAccessorType;import javax.xml.bind.annotation.XmlRootElement;/** * <p>集合试验</p> */@XmlRootElement@XmlAccessorType(XmlAccessType.FIELD)public class Persion {private List<String> infos;public List<String> getInfos() {return infos;}public void setInfos(List<String> infos) {this.infos = infos;}@Overridepublic String toString() {StringBuilder builder = new StringBuilder();builder.append("Persion [infos=");builder.append(infos);builder.append("]");return builder.toString();}public static void main(String[] args) {try {JAXBContext jaxbContext = JAXBContext.newInstance(Persion.class);Persion persion = new Persion();List<String> infos = new ArrayList<String>();infos.add("112");infos.add("就不告诉你");infos.add(new SimpleDateFormat("yyyy-MM-dd").format(new Date()));persion.setInfos(infos);Marshaller marshaller = jaxbContext.createMarshaller();marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);StringWriter writer = new StringWriter();marshaller.marshal(persion, writer);String xml = writer.getBuffer().toString();System.out.println(xml);Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();Object bean = unmarshaller.unmarshal(new StringReader(xml));System.out.println(bean);} catch (JAXBException e) {e.printStackTrace();}}}?
输出结果
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?><persion> <infos>112</infos> <infos>就不告诉你</infos> <infos>2011-09-28</infos></persion>Persion [infos=[112, 就不告诉你, 2011-09-28]]
?好了，下一节我们最后看看本节开头提到的xml格式怎么实现
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