使用JAXB实现JAVA对象和XML字符串的互相转换-蒲公英云

使用JAXB实现JAVA对象和XML字符串的互相转换

本文转自：https://blog.csdn.net/qq\_32786873/article/details/71817149

关于JAXB的介绍，见：http://blog.csdn.net/qq\_32786873/article/details/71715254

测试类：

package com.solin.test;
import java.util.ArrayList;
import java.util.List;
public class Test {
public static void main(String[] args) {
Student student = new Student();
student.setName("邪恶小法师");
student.setAge("110");
student.setSex("男");
List<Student.Friend> list = new ArrayList<>();
Student.Friend f1 = new Student.Friend();
f1.setName("德玛西亚之力");
f1.setAge("888");
f1.setSex("男");
Student.Friend f2 = new Student.Friend();
f2.setName("无双剑姬");
f2.setAge("898");
f2.setSex("女");
list.add(f1);
list.add(f2);
student.setFriend(list);
//将java对象转换为XML字符串
String xmlStr = XmlAnd;
System.out.println(xmlStr);
//将xml字符串转换为java对象
      System.out.println(XmlAndJavaObjectConvert.convertXmlStrToObject(Student.class, xmlStr));
}
}
实体类：
package com.solin.test;
import java.util.List;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
//XML文件中的根标识  
@XmlRootElement(name = "Student") 
//控制JAXB 绑定类中属性和字段的排序  
@XmlType(propOrder = {  
   "name",  
   "age",  
   "sex",  
   "friend"
})  
public class Student {
private String name;
private String age;
private String sex;
private List<Friend> friend;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@XmlElementWrapper(name="friendList")
public List<Friend> getFriend() {
return friend;
}
public void setFriend(List<Friend> friend) {
this.friend = friend;
}
@Override
public String toString() {
return "Student [name=" + name + ", age=" + age + ", sex=" + sex + ", friendList=" + friend + "]";
}
public static class Friend{
private String name;
private String age;
private String sex;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return "Friend [name=" + name + ", age=" + age + ", sex=" + sex + "]";
}
}
}
工具类：
package com.solin.test;
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 XmlAndJavaObjectConvert {
    public static String convertToXml(Object obj) {  
       // 创建输出流  
       StringWriter sw = new StringWriter();  
       try {  
           // 利用jdk中自带的转换类实现  
          JAXBContext context = JAXBContext.newInstance(obj.getClass());  
           Marshaller marshaller = context.createMarshaller();  
           // 格式化xml输出的格式  
          marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,  
                Boolean.TRUE);  
           // 将对象转换成输出流形式的xml  
          marshaller.marshal(obj, sw);  
       } catch (JAXBException e) {  
          e.printStackTrace();  
       }  
       return sw.toString();  
   }  
    public static Object convertXmlStrToObject(Class clazz, String xmlStr) {  
       Object xmlObject = null;  
       try {  
          JAXBContext context = JAXBContext.newInstance(clazz);  
           // 进行将Xml转成对象的核心接口  
          Unmarshaller unmarshaller = context.createUnmarshaller();  
          StringReader sr = new StringReader(xmlStr); 
           xmlObject = unmarshaller.unmarshal(sr);  
       } catch (JAXBException e) {  
          e.printStackTrace();  
       }  
       return xmlObject;  
   }  
}