Java對(duì)象和XML對(duì)象都是常用的數(shù)據(jù)表達(dá)方式,應(yīng)用在很多領(lǐng)域中。由于這兩種方式數(shù)據(jù)格式的差異,我們必須要進(jìn)行對(duì)象轉(zhuǎn)換才能在它們之間進(jìn)行交互。這里介紹一下Java對(duì)象和XML對(duì)象的互相轉(zhuǎn)換方法。
Java對(duì)象和XML對(duì)象之間的轉(zhuǎn)換需要用到JAXB(Java Architecture for XML Binding)技術(shù)。JAXB是Java提供的一種用于XML數(shù)據(jù)綁定的技術(shù),它提供了Java對(duì)象和XML對(duì)象之間互相轉(zhuǎn)換的方法。
public class Student { private String name; private int age; // getter and setter } // Java對(duì)象轉(zhuǎn)XML對(duì)象 public static void convertToXml(Student student, String filepath) { try { JAXBContext context = JAXBContext.newInstance(Student.class); Marshaller marshaller = context.createMarshaller(); marshaller.marshal(student, new File(filepath)); } catch (Exception e) { e.printStackTrace(); } } // XML對(duì)象轉(zhuǎn)Java對(duì)象 public static Student convertToJava(String filepath) { try { JAXBContext context = JAXBContext.newInstance(Student.class); Unmarshaller unmarshaller = context.createUnmarshaller(); Student student = (Student) unmarshaller.unmarshal(new File(filepath)); return student; } catch (Exception e) { e.printStackTrace(); return null; } }
上面的示例代碼中,我們創(chuàng)建了一個(gè)Java對(duì)象Student,里面包含姓名和年齡兩個(gè)屬性。然后通過(guò)JAXB技術(shù)提供的JAXBContext、Marshaller和Unmarshaller對(duì)象,實(shí)現(xiàn)了Java對(duì)象和XML對(duì)象之間的互相轉(zhuǎn)換。
Java對(duì)象和XML對(duì)象的轉(zhuǎn)換是很常見(jiàn)的一種操作,不僅在Java編程中常用,在很多其他的編程語(yǔ)言中也是常見(jiàn)的操作。有了JAXB技術(shù)的支持,我們能夠更加方便地進(jìn)行這類(lèi)操作。