JAXB:Java Object与XML的互相转换

最新推荐文章于 2024-04-18 17:52:08 发布

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最新推荐文章于 2024-04-18 17:52:08 发布

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分类专栏： Java相关文章标签： jaxb xml object java string exception

本文链接：https://blog.youkuaiyun.com/kunshan_shenbin/article/details/4142890

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本文介绍了一个使用 Java Architecture for XML Binding (JAXB) 进行 XML 数据绑定的例子。通过 Person 类及其地址信息的序列化与反序列化过程，展示了 JAXB 的基本用法。文章还涉及自定义适配器 AddressAdapter 的实现。

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https://jaxb.dev.java.net/

如下图所示建立工程:

AddressAdapter.java

package com.jaxb.adapter; import javax.xml.bind.annotation.adapters.XmlAdapter; import com.jaxb.model.Address; import com.jaxb.model.AddressImpl; public class AddressAdapter extends XmlAdapter<String, Address> { @Override public String marshal(Address v) throws Exception { return v.getAddress(); } @Override public Address unmarshal(String v) throws Exception { AddressImpl address = new AddressImpl(); address.setAddress("China"); return address; } }

JaxbTest.java

package com.jaxb.demo; import java.io.StringReader; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Marshaller; import javax.xml.bind.Unmarshaller; import com.jaxb.model.AddressImpl; import com.jaxb.model.Person; public class JaxbTest { public static void main(String[] args) throws JAXBException { JAXBContext context = JAXBContext.newInstance(Person.class); Person person = new Person(); AddressImpl address = new AddressImpl(); address.setAddress("KunShan"); person.setName("ShenBin"); person.setAddress(address); Marshaller marshaller = context.createMarshaller(); marshaller.marshal(person, System.out); System.out.println(); String xml = "<ns2:p xmlns:ns2='http://test.com'><address>China</address><name>ChenYan</name></ns2:p>"; Unmarshaller unmarshaller = context.createUnmarshaller(); Person p = (Person)unmarshaller.unmarshal(new StringReader(xml)); System.out.println(p.getName()); System.out.println(p.getAddress().getAddress()); } }

Address.java

package com.jaxb.model; public interface Address { public String getAddress(); }

AddressImpl.java

package com.jaxb.model; public class AddressImpl implements Address { private String address; public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } }

Person.java

package com.jaxb.model; import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlElement; import javax.xml.bind.annotation.XmlRootElement; import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter; import com.jaxb.adapter.AddressAdapter; @XmlRootElement(name="p", namespace="http://test.com") @XmlAccessorType(XmlAccessType.PROPERTY) public class Person { private String name; @XmlElement public int age = 10; private Address address; @XmlJavaTypeAdapter(AddressAdapter.class) public Address getAddress() { return address; } public void setAddress(Address address) { this.address = address; } public String getName() { return name; } public void setName(String name) { this.name = name; } }

JAXWS: https://jax-ws.dev.java.net/