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参考网页：http://www.mkyong.com/java/jaxb-hello-world-example/
JAXB完整教程：https://jaxb.java.net/tutorial/
1.JAXB 依赖
maven项目使用JAXB首先需要添加jaxb api和jaxb impl,jaxb core(因为jaxb api 2.2.11 版本之后不再支持annomationReader，详见:http://stackoverflow.com/questions/27046836/why-has-annotationreader-been-removed-from-jaxb-reference-implementation)：
jaxb api的maven dependency可以在这里找到：http://mvnrepository.com/artifact/javax.xml/jaxb-api
jaxb impl的maven dependency可以在这里找到：http://mvnrepository.com/artifact/com.sun.xml.bind/jaxb-impl
jaxb core的maven dependency可以在这里找到：http://mvnrepository.com/artifact/com.sun.xml.bind/jaxb-core
这里使用最新的版本，添加如下代码到pom.xml的dependencies当中：
<!-- http://mvnrepository.com/artifact/com.sun.xml.bind/jaxb-core --> <dependency> <groupId>com.sun.xml.bind</groupId> <artifactId>jaxb-core</artifactId> <version>2.2.11</version> </dependency> <!-- http://mvnrepository.com/artifact/javax.xml/jaxb-api --> <dependency> <groupId>javax.xml</groupId> <artifactId>jaxb-api</artifactId> <version>2.1</version> </dependency> <!-- http://mvnrepository.com/artifact/com.sun.xml.bind/jaxb-impl --> <dependency> <groupId>com.sun.xml.bind</groupId> <artifactId>jaxb-impl</artifactId> <version>2.2.11</version> </dependency>
2.JAXB注释
需要进行xml转换的类必须用JAXB注释（JAXB annotation）进行注释。
package com.mypackage; 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; } @Override public String toString() { return "Customer [name=" + name + ", age=" + age + ", id=" + id + "]"; } }
3.将对象转换成XML
JAXB编组（marshall）对象成XML。
package com.mypackage; import java.io.File; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Marshaller; public class JAXBMarshallExample { public static void main(String[] args) { Customer customer = new Customer(); customer.setId(1000); customer.setName("moon"); customer.setAge(18); 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(); } } }
输出结果：
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <customer id="1000"> <age>18</age> <name>moon</name> </customer>
4.将XML转换成对象
JAXB解组(unmarshall)XML成对象。
package com.mypackage; import java.io.File; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Unmarshaller; public class JAXBUnmarshallExample { 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(); } } }
程序输出：
Customer [name=moon, age=18, id=1000]
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原文地址：http://www.cnblogs.com/moonlightpoet/p/5533313.html
