标签：style blog http color java 使用 io 文件
JAXB是Java Architecture for XML Binding的缩写。使用JAXB注解将Java对象转换成XML文件。在这篇教程中，我们将会展示如何使用JAXB来做以下事情：
1. marshall 将java对象转化成xml文件
2. unmarshalling 将xml内容转换成java对象
如果一个对象需要被转换成XML文件，或者从XML文件中生成，该对象需要用JAXB注解来标注。这些注解光凭名字就知道是什么意思了。具体可参考官网：jaxb guide
package com.jaxb.core; import javax.xml.bind.annotation.XmlAttribute; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; @XmlRootElement public class Customer { String name; int age; int id; public String getName() { return name; } @XmlElement public void setName(String name) { this.name = name; } public int getAge() { return age; } @XmlElement public void setAge(int age) { this.age = age; } public int getId() { return id; } @XmlAttribute public void setId(int id) { this.id = id; } }
JAXB marshalling例子，将customer对象转换成XML文件。jaxbMarshaller.marshal()包含了许多重载方法，哪个输出符合你的要求就选择哪个方法。
package com.jaxb.core; import java.io.File; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Marshaller; public class JAXBExample { public static void main(String[] args) { Customer customer = new Customer(); customer.setId(100); customer.setName("benson"); customer.setAge(23); try { File file = new File("C:\\file.xml"); JAXBContext jaxbContext = JAXBContext.newInstance(Customer.class); Marshaller jaxbMarshaller = jaxbContext.createMarshaller(); // output pretty printed jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); jaxbMarshaller.marshal(customer, file); jaxbMarshaller.marshal(customer, System.out); } catch (JAXBException e) { e.printStackTrace(); } } }
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <customer id="100"> <age>23</age> <name>benson</name> </customer>
JAXB unmarshalling例子，将XML文件内容转换成customer对象。jaxbMarshaller.unmarshal()包含了许多重载方法，哪个适合你的输出，你就选择哪个方法。
package com.jaxb.core;
import java.io.File;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
public class JAXBExample {
public static void main(String[] args) {
try {
File file = new File("C:\\file.xml");
JAXBContext jaxbContext = JAXBContext.newInstance(Customer.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Customer customer = (Customer) jaxbUnmarshaller.unmarshal(file);
System.out.println(customer);
} catch (JAXBException e) {
e.printStackTrace();
}
}
}
JAXB XML到java object的转换,布布扣,bubuko.com
标签：style blog http color java 使用 io 文件
原文地址：http://www.cnblogs.com/xinsheng/p/3899185.html
