Xml 轉換對象以及對象轉換xml應用XStream

需要導入的包和項目如下：

User.java代碼:
public class User {
	private String id;
	
	private String name ;
	
	private String age;
	
	private String pwd;
	
	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	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 getPwd() {
		return pwd;
	}

	public void setPwd(String pwd) {
		this.pwd = pwd;
	}

	@Override
	public String toString() {
		return "User [id=" + id + ", name=" + name + ", age=" + age + ", pwd=" + pwd + "]";
	}

}
Test.java代碼
package com.test;

import com.test.domain.User;
import com.thoughtworks.xstream.XStream;

public class Test {
	public static void main(String[] args) {
		User user = new User();
		
		user.setAge("11");
		user.setId("1");
		user.setName("zhangsan");
		user.setPwd("123456");
		
		XStream xml = new XStream();
		String userXml = xml.toXML(user);
		System.out.println("object to xml");
		System.out.println(userXml);
		System.out.println("=====================================");
		System.out.println("xml to object");
		User u = (User) xml.fromXML(userXml);
		System.out.println(u);
	}

}
運作結果：
object to xml
<com.test.domain.User>
  <id>1</id>
  <name>zhangsan</name>
  <age>11</age>
  <pwd>123456</pwd>
</com.test.domain.User>
=====================================
xml to object
User [id=1, name=zhangsan, age=11, pwd=123456]

這裡可以給輸出的xml起一個别名：
例如：下免得測試代碼：
package com.test;

import com.test.domain.User;
import com.thoughtworks.xstream.XStream;

public class Test {
	public static void main(String[] args) {
		User user = new User();
		
		user.setAge("11");
		user.setId("1");
		user.setName("zhangsan");
		user.setPwd("123456");
		
		XStream xml = new XStream();
		xml.alias("address", User.class);
		String userXml = xml.toXML(user);
		System.out.println("object to xml");
		System.out.println(userXml);
		System.out.println("=====================================");
		System.out.println("xml to object");
		User u = (User) xml.fromXML(userXml);
		System.out.println(u);
	}

}
運作結果：
object to xml
<address>
  <id>1</id>
  <name>zhangsan</name>
  <age>11</age>
  <pwd>123456</pwd>
</address>
=====================================
xml to object
User [id=1, name=zhangsan, age=11, pwd=123456]
這裡我們将user這個對象起了一個别名為address，其他的修改也是同理，如何要給屬性起别名就用
xml.aliasField("userid", User.class, "id");
這裡我們也可以用注解的方式來起别名:
測試代碼如下：
User.java代碼
package com.test.domain;

import com.thoughtworks.xstream.annotations.XStreamAlias;

@XStreamAlias("user")
public class User {
	@XStreamAlias("userId")
	private String id;
	
	private String name ;
	
	private String age;
	
	private String pwd;
	
	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	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 getPwd() {
		return pwd;
	}

	public void setPwd(String pwd) {
		this.pwd = pwd;
	}

	@Override
	public String toString() {
		return "User [id=" + id + ", name=" + name + ", age=" + age + ", pwd=" + pwd + "]";
	}

}
Test.java測試代碼如下：
package com.test;

import com.test.domain.User;
import com.thoughtworks.xstream.XStream;

public class Test {
	public static void main(String[] args) {
		User user = new User();
		
		user.setAge("11");
		user.setId("1");
		user.setName("zhangsan");
		user.setPwd("123456");
		
		XStream xml = new XStream();
		xml.processAnnotations(User.class); 
		String userXml = xml.toXML(user);
		System.out.println("object to xml");
		System.out.println(userXml);
		System.out.println("=====================================");
		System.out.println("xml to object");
		User u = (User) xml.fromXML(userXml);
		System.out.println(u);
	}

}
測試結果如下：
object to xml
<user>
  <userId>1</userId>
  <name>zhangsan</name>
  <age>11</age>
  <pwd>123456</pwd>
</user>
=====================================
xml to object
User [id=1, name=zhangsan, age=11, pwd=123456]

@XStreamAlias注解可在類與屬性上使用設定名稱,相當于: xstream.alias("user", User.class);