Jaxb complex xml unmarshall

Question

我有問題解組嵌套的xml如下。 有人可以告訴我，如果我遺失了什么。
body標簽可以包含任何Jaxb anotated obj。
我是否必須創建一個自定義適配器來編組/解組這樣的xml？

輸入XML

<?xml version="1.0" encoding="UTF-8"?>
<serviceRq xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="serviceRq">
  <body>   
    <createRq>
       <id>1234</id>
    </createRq>
  </body>
</serviceRq>

我的Jaxb注釋類是：

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "serviceRq")
public class ServiceRq{    
    private Object body;
    <!-- getters and setters omitted-->
}

這里，body可以是任何jaxb注釋對象，在本例中是CreateRq。

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "createRq")
public class CreateRq{    
    private String id;
    <!-- getters and setters omitted-->
}

我正在尋找一種通用的方法來支持輸入xml體中任何Jaxb帶注釋的對象。

Answer 1

您可以使用@XmlAnyElement(lax=true)和XmlAdapter來處理此用例：

ServiceRq

import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "serviceRq")
public class ServiceRq{    

    @XmlJavaTypeAdapter(value=BodyAdapter.class)
    private Object body;
    // getters and setters omitted
}

BodyAdapter

import javax.xml.bind.annotation.adapters.XmlAdapter;

public class BodyAdapter extends XmlAdapter<Body, Object>{

    @Override
    public Object unmarshal(Body v) throws Exception {
        return v.getValue();
    }

    @Override
    public Body marshal(Object v) throws Exception {
        Body body = new Body();
        body.setValue(v);
        return body;
    }

}

身體

import javax.xml.bind.annotation.XmlAnyElement;

public class Body {

    private Object value;

    @XmlAnyElement(lax=true)
    public Object getValue() {
        return value;
    }

    public void setValue(Object value) {
        this.value = value;
    }

}

CreateRq

import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "createRq")
public class CreateRq{    
    private String id;
    // getters and setters omitted
}

演示

import java.io.File;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(ServiceRq.class);
        System.out.println(jc);

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        ServiceRq serviceRq = (ServiceRq) unmarshaller.unmarshal(new File("input.xml"));

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(serviceRq, System.out);

    }

}

欲獲得更多信息

Answer 2

你可以在EclipseLink JAXB（MOXy）中使用@XmlAnyElement(lax=true)和@XmlPath擴展來處理這個用例（注意：我是MOXy的主管）。 對於適用於任何JAXB實現（ Metro ， MOXy ， JaxMe等）的方法，請參閱： Jaxb complex xml unmarshall 。

ServiceRq

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAnyElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;

import org.eclipse.persistence.oxm.annotations.XmlPath;

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "serviceRq")
public class ServiceRq{    

    @XmlPath("body/createRq")
    @XmlAnyElement(lax=true)
    private Object body;
    // getters and setters omitted
}

CreateRq

import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "createRq")
public class CreateRq{    
    private String id;
    // getters and setters omitted
}

演示

import java.io.File;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(ServiceRq.class);

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        ServiceRq serviceRq = (ServiceRq) unmarshaller.unmarshal(new File("input.xml"));

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(serviceRq, System.out);

    }
}

jaxb.properties

要將MOXy用作JAXB提供程序，必須在與域模型相同的包中包含名為jaxb.properties的文件，並使用以下條目：

javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory

欲獲得更多信息

Jaxb complex xml unmarshall

問題描述

2 個解決方案

解決方案1
6 已采納 2011-05-16 17:45:01

解決方案2
2 2011-05-16 17:33:56

Jaxb complex xml unmarshall

問題描述

2 個解決方案

解決方案1 6 已采納 2011-05-16 17:45:01

解決方案2 2 2011-05-16 17:33:56

解決方案1
6 已采納 2011-05-16 17:45:01

解決方案2
2 2011-05-16 17:33:56