XStream 实现XML>Obj 和 obj>XML

最新推荐文章于 2021-05-19 14:09:03 发布

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最新推荐文章于 2021-05-19 14:09:03 发布

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分类专栏： java xml java工具类

本文链接：https://blog.youkuaiyun.com/qiunian144084/article/details/78095826

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本文介绍如何使用XStream库实现Java对象与XML文件之间的相互转换，并通过具体示例展示了如何定义实体类、集合处理及工具类的方法。

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1、需要的jar包

jar 包的 maven地址：

         <!-- xml转换 -->
	     <!-- https://mvnrepository.com/artifact/com.thoughtworks.xstream/xstream -->
		<dependency>
		    <groupId>com.thoughtworks.xstream</groupId>
		    <artifactId>xstream</artifactId>
		    <version>1.4.9</version>
		</dependency>

2、实体类处理

package com.qn.model;

import java.io.Serializable;

import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamAsAttribute;

//设置名称
@XStreamAlias("User")
public class User implements Serializable{

	private static final long serialVersionUID = 1L;
	
	//设置属性(id为user的属性)
	@XStreamAsAttribute
	private Integer id;
	private String name;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	@Override
	public String toString() {
		return "User [id=" + id + ", name=" + name + "]";
	}
}

实体类集合处理

package com.qn.model;

import java.io.Serializable;
import java.util.List;

import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamImplicit;

@XStreamAlias("Users")
public class UsersVo implements Serializable{

	private static final long serialVersionUID = 1L;
	@XStreamImplicit
	private List<User> users;
	public List<User> getUsers() {
		return users;
	}
	public void setUsers(List<User> users) {
		this.users = users;
	}
	@Override
	public String toString() {
		return "UsersVo [users=" + users + "]";
	}
}

3、XMLUtils

package com.qn.service;

import com.thoughtworks.xstream.XStream;

public class XMLUtils {

	public static String toXML(Object object){
		XStream xStream = new XStream();
		xStream.setMode(XStream.NO_REFERENCES);
		xStream.processAnnotations(object.getClass());
		return xStream.toXML(object);
	}
	
	public static Object toObj(Class cla,String xml){
		XStream xStream = new XStream();
		xStream.setMode(XStream.NO_REFERENCES);
		xStream.processAnnotations(cla);
		Object obj = xStream.fromXML(xml);
		return obj;
	}
}

4、test验证

	@Test
	public  void userXML(){
		List<User> users = operateOracle.SelectData();//从数据库中获取user集合
		//String xml = XMLUtils.toXML(users);
		UsersVo usersVo=new UsersVo();
		usersVo.setUsers(users);
		String xml = XMLUtils.toXML(usersVo);
		System.out.println(xml);
		
		UsersVo usersVo2=(UsersVo) XMLUtils.toObj(UsersVo.class,xml);
		System.out.println(usersVo2);
	}