1

我正在尝试使用 MOXy 为前端客户端生成特定格式的响应，以使他们更容易确定特定的关系。这是一个人为的例子，但我正在尝试做类似以下的事情......</p> 

public class Person {
    private Integer id;

    private String name;

    private Address address;
}

public class Address {
    private String street;

    private String locality;

    private String state;

    private String zip;
}

public class PersonCollectionResponse {
    private Set<Person> people;

    public Set<Person> getPeople() {
        return this.people;
    }

    private int getCount() {
        return this.people.size();
    }
}

…并希望得到类似…的结果</p> 

{
    "meta": {
        "count": 2
    },

    "people": [{
        "id": 1,
        "name": "Danny Parker",
        "contact": {
            "locality": "Zoo York",
            "state": "New York"
        },
    }, {
        "id": 2,
        "name": "Oscar the Grouch",
        "contact": {
            "locality": "San Francisco",
            "state": "California"
        }

    }],

    "mappings": [{
        "person": 1,
        "zip": 10014
    }, {
        "person": 2,
        "zip": 94102
    }]
}

现在“人”集不是很难，但我在编写 EclipseLink OXM 元数据时被困在如何让映射工作。我正在寻找一种方法来重新定义人们如何被列出，以便我可以得到我的映射。

<xml-element java-attribute="people">
    <xml-element java-attribute="id" xml-path="@id" />
    <xml-element java-attribute="zip" xml-path="@zip" />
</xml-element>

我不明白，现在可能。所以我在 PersonCollectionResponse 上创建了一个 getMappings，它返回一个 List>，它是从人们那里生成的。现在这并不理想，但还有更糟糕的事情。但是写出来的时候，map对象就是这样的字符串……</p> 

"mappings": ["{person: 1, zip: 10014}", "{person: 2, zip: 94102}"]

所以我想我的问题就是其中之一……</p>

  1. 如何再次显示元素但输出不同？
  2. 如何在不将它们引用为字符串的情况下输出地图？

我想最坏的情况是我将我的一组通用映射变成一个新的类对象并为它们提供一个模式，但这是我想避免的。

4

1 回答 1

0

目前 MOXy 不允许您将单个实例的表示拆分为 JSON（或 XML）树中的多个位置。请输入您希望查看的支持类型的增强请求：

下面我将演示如何映射部分 JSON 消息。

部分答案#1

下面我将描述如何将您的模型映射到以下 JSON 消息：

{
   "meta" : {
      "count" : 2
   },
   "people" : [ {
      "id" : 1,
      "name" : "Danny Parker",
      "contact" : {
         "locality" : "Zoo York",
         "state" : "New York"
      }
   }, {
      "id" : 2,
      "name" : "Oscar the Grouch",
      "contact" : {
         "locality" : "San Francisco",
         "state" : "California"
      }
   } ]
}

oxm.xml

<?xml version="1.0"?>
<xml-bindings
    xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
    package-name="forum11870107">
    <java-types>
        <java-type name="PersonCollectionResponse">
            <java-attributes>
                <xml-element java-attribute="count" xml-path="meta/count/text()"/>
            </java-attributes>
        </java-type>
        <java-type name="Person">
            <xml-type prop-order="id name address"/>
            <java-attributes>
                <xml-element java-attribute="address" name="contact"/>
            </java-attributes>
        </java-type>
        <java-type name="Address">
            <java-attributes>
                <xml-transient java-attribute="zip"/>
            </java-attributes>
        </java-type>
    </java-types>
</xml-bindings>

部分答案#2

现在我将描述如何将您的模型映射到以下 JSON 消息：

{
   "meta" : {
      "count" : 2
   },
   "mappings" : [ {
      "person" : 2,
      "zip" : "94102"
   }, {
      "person" : 1,
      "zip" : "10014"
   } ]
}

oxm.xml

<?xml version="1.0"?>
<xml-bindings
    xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
    package-name="forum11870107">
    <java-types>
        <java-type name="PersonCollectionResponse">
            <java-attributes>
                <xml-element java-attribute="count" xml-path="meta/count/text()"/>
                <xml-element java-attribute="people" name="mappings"/>
            </java-attributes>
        </java-type>
        <java-type name="Person">
            <xml-type prop-order="id address"/>
            <java-attributes>
                <xml-element java-attribute="id" name="person"/>
                <xml-transient java-attribute="name"/>
                <xml-element java-attribute="address" xml-path="."/>
            </java-attributes>
        </java-type>
        <java-type name="Address" xml-accessor-type="NONE">
            <java-attributes>
                <xml-element java-attribute="zip"/>
            </java-attributes>
        </java-type>
    </java-types>
</xml-bindings>

演示代码

两个部分解决方案都可以使用相同的演示代码：

package forum11870107;

import java.util.*;
import javax.xml.bind.*;

import org.eclipse.persistence.jaxb.JAXBContextProperties;

public class Demo {

    public static void main(String[] args) throws Exception {
        Map<String, Object> properties = new HashMap<String, Object>(1);
        properties.put(JAXBContextProperties.OXM_METADATA_SOURCE, "forum11870107/oxm.xml");
        properties.put(JAXBContextProperties.MEDIA_TYPE, "application/json");
        properties.put(JAXBContextProperties.JSON_INCLUDE_ROOT, false);
        JAXBContext jc = JAXBContext.newInstance(new Class[] {PersonCollectionResponse.class}, properties);

        PersonCollectionResponse pcr = new PersonCollectionResponse();

        Person person1 = new Person();
        person1.setId(1);
        person1.setName("Danny Parker");
        pcr.getPeople().add(person1);
        Address address1 = new Address();
        address1.setLocality("Zoo York");
        address1.setState("New York");
        address1.setZip("10014");
        person1.setAddress(address1);

        Person person2 = new Person();
        person2.setId(2);
        person2.setName("Oscar the Grouch");
        pcr.getPeople().add(person2);
        Address address2 = new Address();
        address2.setLocality("San Francisco");
        address2.setState("California");
        address2.setZip("94102");
        person2.setAddress(address2);

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

}

领域模型

以下是用于两个部分解决方案的域模型：

PersonCollectionResponse

package forum11870107;

import java.util.*;

public class PersonCollectionResponse {
    private Set<Person> people = new HashSet<Person>();

    public Set<Person> getPeople() {
        return this.people;
    }

    public void setPeople(Set<Person> people) {
        this.people = people;
    }

    public int getCount() {
        return this.people.size();
    }

}

人

package forum11870107;

public class Person {
    private Integer id;

    private String name;

    private Address address;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Address getAddress() {
        return address;
    }

    public void setAddress(Address address) {
        this.address = address;
    }

}

地址

package forum11870107;

public class Address {

    private String street;
    private String locality;
    private String state;
    private String zip;

    public String getStreet() {
        return street;
    }

    public void setStreet(String street) {
        this.street = street;
    }

    public String getLocality() {
        return locality;
    }

    public void setLocality(String locality) {
        this.locality = locality;
    }

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }

    public String getZip() {
        return zip;
    }

    public void setZip(String zip) {
        this.zip = zip;
    }

}

jaxb.properties

要将 MOXy 指定为您的 JAXB 提供程序，您需要包含一个jaxb.properties在与域模型相同的包中调用的文件，其中包含以下条目（请参阅：http ://blog.bdoughan.com/2011/05/specifying-eclipselink-moxy-as -你的.html。

javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory
于 2012-08-13T15:12:40.273 回答