XStream 快速转换xml

项目地址：http://xstream.codehaus.org/tutorial.html

（以下来源于官网）

1、Create classes to be serialized（初始化类）

public class Person {
  private String firstname;
  private String lastname;
  private PhoneNumber phone;
  private PhoneNumber fax;
  // ... constructors and methods
}

public class PhoneNumber {
  private int code;
  private String number;
  // ... constructors and methods
}

2、Initializing XStream（初始化XStream）

XStream xstream = new XStream();

XStream xstream = new XStream(new DomDriver()); // does not require XPP3 library

XStream xstream = new XStream(new StaxDriver()); // does not require XPP3 library starting with Java 6

xstream.alias("person", Person.class);
xstream.alias("phonenumber", PhoneNumber.class);

3、Serializing an object to XML（转换为xml例子）

Person joe = new Person("Joe", "Walnes");
joe.setPhone(new PhoneNumber(123, "1234-456"));
joe.setFax(new PhoneNumber(123, "9999-999"));

String xml = xstream.toXML(joe);

<person>
  <firstname>Joe</firstname>
  <lastname>Walnes</lastname>
  <phone>
    <code>123</code>
    <number>1234-456</number>
  </phone>
  <fax>
    <code>123</code>
    <number>9999-999</number>
  </fax>
</person>

4、Deserializing an object back from XML（xml逆转）

Person newJoe = (Person)xstream.fromXML(xml);