Jaxb技术进行xml和javabean对象之间互相转化.pdf

Jaxb技术进行xml和j avabean对象之间互相转化 一、beanToXml public static String convertToXml(Object obj, String encoding) { String result = null; try { JAXBConte t conte t = JAXBConte t.newInstance(obj.getClass()); Marshaller marshaller = conte t.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding); marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true); //省略头信息 marshaller.setProperty(Marshaller.JAXB_SCHEMA_LOCATION, 321); //scheam_location marshaller.setProperty(Marshaller.JAXB_NO_NAMESPACE_SCHEMA_LOCATION, abc); //scheam_location StringWriter writer = new StringWriter(); marshaller.marshal(obj, writer); result = writer.toString(); } catch (E ception e) { e.printStackTrace(); } return result; } 二、xmlToBean public static T T converyToJavaBean(String ml, ClassT c) { T t = null; try { JAXBConte t conte t = JAXBConte t.newInstance(c); Unmarshaller unmarshaller = conte t.createUnmarshaller(); t = (T) unmarshaller.unmarshal(new StringReader( ml)); } catch (E ception e) { e.printStackTrace(); } return t; } 三、使用注解 在Jaxb中常用的注解有 1. @XmlType 2. @XmlElement 3. @XmlRootElement 4. @XmlAttribute 5. @XmlAccessorType 6. @XmlAccessorOrder 7. @XmlTransient 8. @XmlJavaTypeAdapter 9. @XmlElementWrapper 10. @XmlList 11. @XmlSchema 12. @XmlValue 13. @XmlJavaTypeAdapter 1. @@XXmmllTTyyppee @XmlType 注解用于标注类或枚举类型，用它标注的类在映射后的 schema 中中 以一个 XML 复杂数据类型的形式出现。我们可以通过 @XmlType 注解的 name 属性来定制映射的 XML 数据类型的名称，用 propOrder 属性来定制映射后