JAXB案例：Xml与String进行交互

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实体类：

package AjaxTest;import javax.xml.bind.annotation.XmlElement;public class JAXBEntity {    private String headId;    private String headName;    private String headPwd;    //在XML中的节点名称    @XmlElement(name = "JAXB_headId")    public String getHeadId() {        return headId;    }    public void setHeadId(String headId) {        this.headId = headId;    }    //在XML中的节点名称    @XmlElement(name = "JAXB_headName")    public String getHeadName() {        return headName;    }    public void setHeadName(String headName) {        this.headName = headName;    }    //在XML中的节点名称    @XmlElement(name = "JAXB_headPwd")    public String getHeadPwd() {        return headPwd;    }    public void setHeadPwd(String headPwd) {        this.headPwd = headPwd;    }}

实体类1：

package AjaxTest;import javax.xml.bind.annotation.XmlElement;public class JAXBEntity1 {    private String listId;    private String listName;    private String listAddress;    //在XML中的节点名称        @XmlElement(name="body_Id")      public String getListId() {        return listId;    }    public void setListId(String listId) {        this.listId = listId;    }    //在XML中的节点名称    @XmlElement(name="body_Name")      public String getListName() {        return listName;    }    public void setListName(String listName) {        this.listName = listName;    }    //在XML中的节点名称    @XmlElement(name="body_Address")      public String getListAddress() {        return listAddress;    }    public void setListAddress(String listAddress) {        this.listAddress = listAddress;    }}

进行对象存放类：
JAXBEntity节点位置 namespace：XML目标名称空间 defaultValue：此元素的默认值;
nillable:是否可以为空，默认false;
required=true ：将 Javabean 属性映射到一个 minOccurs=”1” 的 XML 模式元素声明

package AjaxTest;import java.util.List;import javax.xml.bind.annotation.XmlElement;import javax.xml.bind.annotation.XmlElementWrapper;import javax.xml.bind.annotation.XmlRootElement;//根节点位置  @XmlRootElement：将类或枚举类型映射到XML元素@XmlRootElement(name = "JAXBMax")public class JAXBEntity2 {    private JAXBEntity entity; //entity对象    private List<JAXBEntity1> listEnityt; //List<Enityt1> 存放集合对象    @XmlElement(name = "JAXBEntity",namespace="www.baidu.com",nillable=false,required=false)    public JAXBEntity getEntity() {        return entity;    }    public void setEntity(JAXBEntity reqHeader) {        this.entity = reqHeader;    }    //在XML中集合的父节点    @XmlElementWrapper(name = "JAXBList_Entity1")    @XmlElement(name = "Entity1")//在XML中集合的单个对象节点名    public List<JAXBEntity1> getListEnityt() {        return listEnityt;    }    public void setListEnityt(List<JAXBEntity1> listEnityt) {        this.listEnityt = listEnityt;    }}

Xml和String字符的交互类：

package AjaxTest;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.StringReader;import java.io.StringWriter;import javax.xml.bind.JAXBContext;import javax.xml.bind.JAXBException;import javax.xml.bind.Marshaller;import javax.xml.bind.Unmarshaller;public class JAXBXmlorString {        /**         * @param <T>         * @param xml         * @param t         * @return XML转换成对象         * @throws JAXBException         */    public static <T> T xmlToBean(String xml, T t) throws JAXBException {        JAXBContext context = JAXBContext.newInstance(t.getClass());        Unmarshaller um = context.createUnmarshaller();        StringReader sr = new StringReader(xml);        t = (T) um.unmarshal(sr);        return t;    }    /**     * @param smsDeliverReq     * @return 对象转换XML     * @throws JAXBException     * @throws FileNotFoundException     */    public static <T> StringWriter beanToXml(T t) throws JAXBException, FileNotFoundException {        JAXBContext context = JAXBContext.newInstance(t.getClass());        Marshaller m = context.createMarshaller();        StringWriter sw = new StringWriter();        m.marshal(t, sw);        m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);        m.marshal(t, new FileOutputStream("src/Test.xml"));//查找XML文件的位置        return sw;    }}

调用测试类，进行测试

package AjaxTest;import java.io.FileNotFoundException;import java.io.StringWriter;import java.util.ArrayList;import java.util.List;import javax.xml.bind.JAXBException;public class AjaxTest {        /**         * @param args         * @throws JAXBException         * @throws FileNotFoundException         */        public static void main(String[] args) throws  FileNotFoundException, JAXBException {            //调用XML和String交互类            JAXBXmlorString jxs=new JAXBXmlorString();          JAXBEntity ent = new JAXBEntity();//创建对象添加数据        ent.setHeadId("20161224");        ent.setHeadName("Demon_MF");        ent.setHeadPwd("admin");        JAXBEntity1 et1 = new JAXBEntity1();//创建对象添加数据        et1.setListId("1");        et1.setListName("巫妖王");        et1.setListAddress("寒冰王座");        JAXBEntity1 et2 = new JAXBEntity1();//创建对象添加数据        et2.setListId("2");        et2.setListName("伊利丹");        et2.setListAddress("黑暗神殿");        List<JAXBEntity1> listEntity=new ArrayList<JAXBEntity1>();//创建集合添加对象        listEntity.add(et1);        listEntity.add(et2);        JAXBEntity2 entity2= new JAXBEntity2();//调用对象存放类        entity2.setListEnityt(listEntity); //将上面的集合和对象放入相应的参数位置        entity2.setEntity(ent);        //对象转换成XML并放入String字符串中        StringWriter sw = jxs.beanToXml(entity2);        System.out.println("转换后的xml"+ sw.toString());        JAXBEntity2 AE2 =jxs.xmlToBean(sw.toString(), entity2);        System.out.println("将XML转换成对象后输出集合信息：");        for (int i = 0; i < AE2.getListEnityt().size(); i++) {            System.out.println(AE2.getListEnityt().get(i).getListId());            System.out.println(AE2.getListEnityt().get(i).getListName());            System.out.println(AE2.getListEnityt().get(i).getListAddress());        }        System.out.println("读取节点");        System.out.println(AE2.getEntity().getHeadId()+" ： "+AE2.getEntity().getHeadName());    }}

在Test.xml文件中出现一下内容

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><JAXBMax xmlns:ns2="www.baidu.com">    <ns2:JAXBEntity>        <JAXB_headId>20161224</JAXB_headId>        <JAXB_headName>Demon_MF</JAXB_headName>        <JAXB_headPwd>admin</JAXB_headPwd>    </ns2:JAXBEntity>    <JAXBList_Entity1>        <Entity1>            <body_Address>寒冰王座</body_Address>            <body_Id>1</body_Id>            <body_Name>巫妖王</body_Name>        </Entity1>        <Entity1>            <body_Address>黑暗神殿</body_Address>            <body_Id>2</body_Id>            <body_Name>伊利丹</body_Name>        </Entity1>    </JAXBList_Entity1></JAXBMax>

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