Java代码的XML / XSD不使用注释(Java Code to XML/XSD without

我需要编组和解组Java类到XML。这个类在不归我，我不能添加anotations，这样我可以使用JAXB。

有没有到Java转换为XML与给定contraint的好办法？

此外，想到了一个工具可能会有所帮助，但我会更位数的也有一些Java API来这样做。

Answer 1:

注：我是的EclipseLink JAXB（莫西）领导和成员JAXB（JSR-222）专家小组。

域模型

我将使用下面的域模型这个答案。注意怎么有型号无JAXB注释。

顾客

package forum11693552;

import java.util.*;

public class Customer {

    private String firstName;
    private String lastName;
    private List<PhoneNumber> phoneNumbers = new ArrayList<PhoneNumber>();

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public List<PhoneNumber> getPhoneNumbers() {
        return phoneNumbers;
    }

    public void setPhoneNumbers(List<PhoneNumber> phoneNumbers) {
        this.phoneNumbers = phoneNumbers;
    }

}

电话号码

package forum11693552;

public class PhoneNumber {

    private String type;
    private String number;

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getNumber() {
        return number;
    }

    public void setNumber(String number) {
        this.number = number;
    }

}

选项＃1 -任何JAXB（JSR-222）的执行情况

JAXB是例外configurartion，这意味着你只需要添加你想要的映射行为从默认的不同注解。下面是一个例子演示了如何使用任何JAXB IMPL没有注释的链接：

演示

package forum11693552;

import javax.xml.bind.*;
import javax.xml.namespace.QName;

public class Demo {

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

        Customer customer = new Customer();
        customer.setFirstName("Jane");
        customer.setLastName("Doe");

        PhoneNumber workPhone = new PhoneNumber();
        workPhone.setType("work");
        workPhone.setNumber("555-1111");
        customer.getPhoneNumbers().add(workPhone);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        JAXBElement<Customer> rootElement = new JAXBElement<Customer>(new QName("customer"), Customer.class, customer);
        marshaller.marshal(rootElement, System.out);
    }

}

产量

<customer>
    <firstName>Jane</firstName>
    <lastName>Doe</lastName>
    <phoneNumbers>
        <number>555-1111</number>
        <type>work</type>
    </phoneNumbers>
</customer>

欲获得更多信息

http://wiki.eclipse.org/EclipseLink/Examples/MOXy/GettingStarted/TheBasics

选项＃2 -的EclipseLink JAXB（MOXY）的外部映射文件

如果你想自定义映射，那么你可能有兴趣在莫西的外部映射文件的扩展名。样本映射文档如下所示：

oxm.xml

<?xml version="1.0"?>
<xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
    package-name="forum11693552">
    <java-types>
        <java-type name="Customer">
            <xml-root-element />
            <java-attributes>
                <xml-element java-attribute="firstName" name="first-name" />
                <xml-element java-attribute="lastName" name="last-name" />
                <xml-element java-attribute="phoneNumbers" name="phone-number" />
            </java-attributes>
        </java-type>
        <java-type name="PhoneNumber">
            <java-attributes>
                <xml-attribute java-attribute="type" />
                <xml-value java-attribute="number" />
            </java-attributes>
        </java-type>
    </java-types>
</xml-bindings>

jaxb.properties

为了让莫西为您的JAXB提供你需要包括一个名为jaxb.properties在同一个包中的以下项您的域模型（见： http://blog.bdoughan.com/2011/05/specifying-eclipselink- MOXY-AS-your.html ）：

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

演示

当使用的EclipseLink莫西为您的JAXB提供者（见），你可以在你的引导你充分利用外部映射文件JAXBContext

package forum11693552;

import java.util.*;
import javax.xml.bind.*;
import javax.xml.namespace.QName;
import org.eclipse.persistence.jaxb.JAXBContextFactory;

public class Demo {

    public static void main(String[] args) throws Exception {
        Map<String, Object> properties = new HashMap<String,Object>(1);
        properties.put(JAXBContextFactory.ECLIPSELINK_OXM_XML_KEY, "forum11693552/oxm.xml");
        JAXBContext jc = JAXBContext.newInstance(new Class[] {Customer.class}, properties);

        Customer customer = new Customer();
        customer.setFirstName("Jane");
        customer.setLastName("Doe");

        PhoneNumber workPhone = new PhoneNumber();
        workPhone.setType("work");
        workPhone.setNumber("555-1111");
        customer.getPhoneNumbers().add(workPhone);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        JAXBElement<Customer> rootElement = new JAXBElement<Customer>(new QName("customer"), Customer.class, customer);
        marshaller.marshal(rootElement, System.out);
    }

}

产量

<?xml version="1.0" encoding="UTF-8"?>
<customer>
   <first-name>Jane</first-name>
   <last-name>Doe</last-name>
   <phone-number type="work">555-1111</phone-number>
</customer>

欲获得更多信息

http://blog.bdoughan.com/2010/12/extending-jaxb-representing-annotations.html
http://blog.bdoughan.com/2012/04/extending-jaxb-representing-metadata-as.html

Answer 2:

你看XStream的？它将deserialise / deserialise标准POJO没有注释或XSD文件。您可以提供的定制影响的元素是如何出现在XML和相当多的作品外的即装即用。

Answer 3:

你可以写一个自定义的XmlAdapter和注释约束类型与字段XmlJavaTypeAdapter注释。基本是这样的：

public enum CannotBeAnnotated { value1, value2; }
@XmlRootElement(name="client")
public class ClientClass {
    @XmlJavaTypeAdapter(Bridge.class)
    public CannotBeAnnotated;
}
@XmlRootElement(name="representation")
public class XmlType {
    @XmlValue
    public String value;
}
public class Bridge extends XmlAdapter<XmlType, CannotBeAnnotated>{
    public XmlType marshal(CannotBeAnnotated c) {
        XmlType x=new XmlType(); 
        x.value=c.name();
        return x;
    }
    public CannotBeAnnotated unmarshall(XmlType x) {
        return CannotBeAnnotated.valueOf(x.value);
    }
}

当然，对于枚举为JAXB知道如何对付他们，这将不会是有用的。我拿起一个枚举为了简单起见，所以你可以看到的想法：