xml 与 javaBean 互换

   在工作中经常遇到到另外一个服务器读取数据，其中一种最常用的方法，就是用xml进行数据传递，比如A服务器到B服务器得到对应的xml格式的数据，A得到之后进行解析。一般这种解析分为DOM解析和SAX解析。这里不是探讨DOM与SAX解析的区别和优点，只是介绍一个小框架，实现JAVABean和XML的转换，傻瓜式的转换。---------------------------XStream

    其官方网站是http://xstream.codehaus.org/

 

JAVAbEAN---->XML

咱们首先得一个对象,比如这个对象是Person

public class Persone { private String firstName; private String lastName; private PhoneNumber phone; private PhoneNumber fax; public Persone(String firstName, String lastName) { super(); this.firstName = firstName; this.lastName = lastName; } public Persone() { super(); } public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public String getLastName() { return lastName; } public void setLastName(String lastName) { this.lastName = lastName; } public PhoneNumber getPhone() { return phone; } public void setPhone(PhoneNumber phone) { this.phone = phone; } public PhoneNumber getFax() { return fax; } public void setFax(PhoneNumber fax) { this.fax = fax; } }

对象PhoneNumber

public class PhoneNumber { private int code; private String number; public int getCode() { return code; } public void setCode(int code) { this.code = code; } public String getNumber() { return number; } public void setNumber(String number) { this.number = number; } public PhoneNumber(int code, String number) { super(); this.code = code; this.number = number; } public PhoneNumber() { super(); } }

 

  XStream xstream = new XStream(new DomDriver()); //初使化XStream
  xstream.alias("person", Persone.class);//对Persone.class名一个别名
  xstream.alias("phonenumber", PhoneNumber.class);
    
  
  Persone joe = new Persone("Joe", "Walnes");
  joe.setPhone(new PhoneNumber(123, "1234-456"));
  joe.setFax(new PhoneNumber(123, "9999-999"));
  String xml = xstream.toXML(joe);//得到xml

   就是这么简单得得到xml 如下:

  <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>

-------------------------------------xml---->object

如果想通过xml构造Person  也很简单

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